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Author SHA1 Message Date
Linus Torvalds
eee9c708cc gup: avoid stack expansion warning for known-good case 
In commit a425ac5365 ("gup: add warning if some caller would seem to
want stack expansion") I added a temporary warning to catch any strange
GUP users that would be impacted by the fact that GUP no longer extends
the stack.

But it turns out that the warning is most easily triggered through
__access_remote_vm(), that already knows to expand the stack - it just
does it *after* calling GUP.  So the warning is easy to trigger by just
running gdb (or similar) and accessing things remotely under the stack.

This just adds a temporary extra "expand stack early" to avoid the
warning for the already converted case - not because the warning is bad,
but because getting the warning for this known good case would then hide
any subsequent warnings for any actually interesting cases.

Let's try to remember to revert this change when we remove the warnings.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2023-06-29 12:36:47 -07:00
Linus Torvalds
1b722407a1 drm changes for 6.5-rc1: 
core:
 - replace strlcpy with strscpy
 - EDID changes to support further conversion to struct drm_edid
 - Move i915 DSC parameter code to common DRM helpers
 - Add Colorspace functionality
 
 aperture:
 - ignore framebuffers with non-primary devices
 
 fbdev:
 - use fbdev i/o helpers
 - add Kconfig options for fb_ops helpers
 - use new fb io helpers directly in drivers
 
 sysfs:
 - export DRM connector ID
 
 scheduler:
 - Avoid an infinite loop
 
 ttm:
 - store function table in .rodata
 - Add query for TTM mem limit
 - Add NUMA awareness to pools
 - Export ttm_pool_fini()
 
 bridge:
 - fsl-ldb: support i.MX6SX
 - lt9211, lt9611: remove blanking packets
 - tc358768: implement input bus formats, devm cleanups
 - ti-snd65dsi86: implement wait_hpd_asserted
 - analogix: fix endless probe loop
 - samsung-dsim: support swapped clock, fix enabling, support var clock
 - display-connector: Add support for external power supply
 - imx: Fix module linking
 - tc358762: Support reset GPIO
 
 panel:
 - nt36523: Support Lenovo J606F
 - st7703: Support Anbernic RG353V-V2
 - InnoLux G070ACE-L01 support
 - boe-tv101wum-nl6: Improve initialization
 - sharp-ls043t1le001: Mode fixes
 - simple: BOE EV121WXM-N10-1850, S6D7AA0
 - Ampire AM-800480L1TMQW-T00H
 - Rocktech RK043FN48H
 - Starry himax83102-j02
 - Starry ili9882t
 
 amdgpu:
 - add new ctx query flag to handle reset better
 - add new query/set shadow buffer for rdna3
 - DCN 3.2/3.1.x/3.0.x updates
 - Enable DC_FP on loongarch
 - PCIe fix for RDNA2
 - improve DC FAMS/SubVP support for better power management
 - partition support for lots of engines
 - Take NUMA into account when allocating memory
 - Add new DRM_AMDGPU_WERROR config parameter to help with CI
 - Initial SMU13 overdrive support
 - Add support for new colorspace KMS API
 - W=1 fixes
 
 amdkfd:
 - Query TTM mem limit rather than hardcoding it
 - GC 9.4.3 partition support
 - Handle NUMA for partitions
 - Add debugger interface for enabling gdb
 - Add KFD event age tracking
 
 radeon:
 - Fix possible UAF
 
 i915:
 - new getparam for PXP support
 - GSC/MEI proxy driver
 - Meteorlake display enablement
 - avoid clearing preallocated framebuffers with TTM
 - implement framebuffer mmap support
 - Disable sampler indirect state in bindless heap
 - Enable fdinfo for GuC backends
 - GuC loading and firmware table handling fixes
 - Various refactors for multi-tile enablement
 - Define MOCS and PAT tables for MTL
 - GSC/MEI support for Meteorlake
 - PMU multi-tile support
 - Large driver kernel doc cleanup
 - Allow VRR toggling and arbitrary refresh rates
 - Support async flips on linear buffers on display ver 12+
 - Expose CRTC CTM property on ILK/SNB/VLV
 - New debugfs for display clock frequencies
 - Hotplug refactoring
 - Display refactoring
 - I915_GEM_CREATE_EXT_SET_PAT for Mesa on Meteorlake
 - Use large rings for compute contexts
 - HuC loading for MTL
 - Allow user to set cache at BO creation
 - MTL powermanagement enhancements
 - Switch to dedicated workqueues to stop using flush_scheduled_work()
 - Move display runtime init under display/
 - Remove 10bit gamma on desktop gen3 parts, they don't support it
 
 habanalabs:
 - uapi: return 0 for user queries if there was a h/w or f/w error
 - Add pci health check when we lose connection with the firmware. This can be used to
   distinguish between pci link down and firmware getting stuck.
 - Add more info to the error print when TPC interrupt occur.
 - Firmware fixes
 
 msm:
 - Adreno A660 bindings
 - SM8350 MDSS bindings fix
 - Added support for DPU on sm6350 and sm6375 platforms
 - Implemented tearcheck support to support vsync on SM150 and newer platforms
 - Enabled missing features (DSPP, DSC, split display) on sc8180x, sc8280xp, sm8450
 - Added support for DSI and 28nm DSI PHY on MSM8226 platform
 - Added support for DSI on sm6350 and sm6375 platforms
 - Added support for display controller on MSM8226 platform
 - A690 GPU support
 - Move cmdstream dumping out of fence signaling path
 - a610 support
 - Support for a6xx devices without GMU
 
 nouveau:
 - NULL ptr before deref fixes
 
 armada:
 - implement fbdev emulation as client
 
 sun4i:
 - fix mipi-dsi dotclock
 - release clocks
 
 vc4:
 - rgb range toggle property
 - BT601 / BT2020 HDMI support
 
 vkms:
 - convert to drmm helpers
 - add reflection and rotation support
 - fix rgb565 conversion
 
 gma500:
 - fix iomem access
 
 shmobile:
 - support renesas soc platform
 - enable fbdev
 
 mxsfb:
 - Add support for i.MX93 LCDIF
 
 stm:
 - dsi: Use devm_ helper
 - ltdc: Fix potential invalid pointer deref
 
 renesas:
 - Group drivers in renesas subdirectory to prepare for new platform
 - Drop deprecated R-Car H3 ES1.x support
 
 meson:
 - Add support for MIPI DSI displays
 
 virtio:
 - add sync object support
 
 mediatek:
 - Add display binding document for MT6795
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Merge tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "There is one set of patches to misc for a i915 gsc/mei proxy driver.

  Otherwise it's mostly amdgpu/i915/msm, lots of hw enablement and lots
  of refactoring.

  core:
   - replace strlcpy with strscpy
   - EDID changes to support further conversion to struct drm_edid
   - Move i915 DSC parameter code to common DRM helpers
   - Add Colorspace functionality

  aperture:
   - ignore framebuffers with non-primary devices

  fbdev:
   - use fbdev i/o helpers
   - add Kconfig options for fb_ops helpers
   - use new fb io helpers directly in drivers

  sysfs:
   - export DRM connector ID

  scheduler:
   - Avoid an infinite loop

  ttm:
   - store function table in .rodata
   - Add query for TTM mem limit
   - Add NUMA awareness to pools
   - Export ttm_pool_fini()

  bridge:
   - fsl-ldb: support i.MX6SX
   - lt9211, lt9611: remove blanking packets
   - tc358768: implement input bus formats, devm cleanups
   - ti-snd65dsi86: implement wait_hpd_asserted
   - analogix: fix endless probe loop
   - samsung-dsim: support swapped clock, fix enabling, support var
     clock
   - display-connector: Add support for external power supply
   - imx: Fix module linking
   - tc358762: Support reset GPIO

  panel:
   - nt36523: Support Lenovo J606F
   - st7703: Support Anbernic RG353V-V2
   - InnoLux G070ACE-L01 support
   - boe-tv101wum-nl6: Improve initialization
   - sharp-ls043t1le001: Mode fixes
   - simple: BOE EV121WXM-N10-1850, S6D7AA0
   - Ampire AM-800480L1TMQW-T00H
   - Rocktech RK043FN48H
   - Starry himax83102-j02
   - Starry ili9882t

  amdgpu:
   - add new ctx query flag to handle reset better
   - add new query/set shadow buffer for rdna3
   - DCN 3.2/3.1.x/3.0.x updates
   - Enable DC_FP on loongarch
   - PCIe fix for RDNA2
   - improve DC FAMS/SubVP support for better power management
   - partition support for lots of engines
   - Take NUMA into account when allocating memory
   - Add new DRM_AMDGPU_WERROR config parameter to help with CI
   - Initial SMU13 overdrive support
   - Add support for new colorspace KMS API
   - W=1 fixes

  amdkfd:
   - Query TTM mem limit rather than hardcoding it
   - GC 9.4.3 partition support
   - Handle NUMA for partitions
   - Add debugger interface for enabling gdb
   - Add KFD event age tracking

  radeon:
   - Fix possible UAF

  i915:
   - new getparam for PXP support
   - GSC/MEI proxy driver
   - Meteorlake display enablement
   - avoid clearing preallocated framebuffers with TTM
   - implement framebuffer mmap support
   - Disable sampler indirect state in bindless heap
   - Enable fdinfo for GuC backends
   - GuC loading and firmware table handling fixes
   - Various refactors for multi-tile enablement
   - Define MOCS and PAT tables for MTL
   - GSC/MEI support for Meteorlake
   - PMU multi-tile support
   - Large driver kernel doc cleanup
   - Allow VRR toggling and arbitrary refresh rates
   - Support async flips on linear buffers on display ver 12+
   - Expose CRTC CTM property on ILK/SNB/VLV
   - New debugfs for display clock frequencies
   - Hotplug refactoring
   - Display refactoring
   - I915_GEM_CREATE_EXT_SET_PAT for Mesa on Meteorlake
   - Use large rings for compute contexts
   - HuC loading for MTL
   - Allow user to set cache at BO creation
   - MTL powermanagement enhancements
   - Switch to dedicated workqueues to stop using flush_scheduled_work()
   - Move display runtime init under display/
   - Remove 10bit gamma on desktop gen3 parts, they don't support it

  habanalabs:
   - uapi: return 0 for user queries if there was a h/w or f/w error
   - Add pci health check when we lose connection with the firmware.
     This can be used to distinguish between pci link down and firmware
     getting stuck.
   - Add more info to the error print when TPC interrupt occur.
   - Firmware fixes

  msm:
   - Adreno A660 bindings
   - SM8350 MDSS bindings fix
   - Added support for DPU on sm6350 and sm6375 platforms
   - Implemented tearcheck support to support vsync on SM150 and newer
     platforms
   - Enabled missing features (DSPP, DSC, split display) on sc8180x,
     sc8280xp, sm8450
   - Added support for DSI and 28nm DSI PHY on MSM8226 platform
   - Added support for DSI on sm6350 and sm6375 platforms
   - Added support for display controller on MSM8226 platform
   - A690 GPU support
   - Move cmdstream dumping out of fence signaling path
   - a610 support
   - Support for a6xx devices without GMU

  nouveau:
   - NULL ptr before deref fixes

  armada:
   - implement fbdev emulation as client

  sun4i:
   - fix mipi-dsi dotclock
   - release clocks

  vc4:
   - rgb range toggle property
   - BT601 / BT2020 HDMI support

  vkms:
   - convert to drmm helpers
   - add reflection and rotation support
   - fix rgb565 conversion

  gma500:
   - fix iomem access

  shmobile:
   - support renesas soc platform
   - enable fbdev

  mxsfb:
   - Add support for i.MX93 LCDIF

  stm:
   - dsi: Use devm_ helper
   - ltdc: Fix potential invalid pointer deref

  renesas:
   - Group drivers in renesas subdirectory to prepare for new platform
   - Drop deprecated R-Car H3 ES1.x support

  meson:
   - Add support for MIPI DSI displays

  virtio:
   - add sync object support

  mediatek:
   - Add display binding document for MT6795"

* tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm: (1791 commits)
  drm/i915: Fix a NULL vs IS_ERR() bug
  drm/i915: make i915_drm_client_fdinfo() reference conditional again
  drm/i915/huc: Fix missing error code in intel_huc_init()
  drm/i915/gsc: take a wakeref for the proxy-init-completion check
  drm/msm/a6xx: Add A610 speedbin support
  drm/msm/a6xx: Add A619_holi speedbin support
  drm/msm/a6xx: Use adreno_is_aXYZ macros in speedbin matching
  drm/msm/a6xx: Use "else if" in GPU speedbin rev matching
  drm/msm/a6xx: Fix some A619 tunables
  drm/msm/a6xx: Add A610 support
  drm/msm/a6xx: Add support for A619_holi
  drm/msm/adreno: Disable has_cached_coherent in GMU wrapper configurations
  drm/msm/a6xx: Introduce GMU wrapper support
  drm/msm/a6xx: Move CX GMU power counter enablement to hw_init
  drm/msm/a6xx: Extend and explain UBWC config
  drm/msm/a6xx: Remove both GBIF and RBBM GBIF halt on hw init
  drm/msm/a6xx: Add a helper for software-resetting the GPU
  drm/msm/a6xx: Improve a6xx_bus_clear_pending_transactions()
  drm/msm/a6xx: Move a6xx_bus_clear_pending_transactions to a6xx_gpu
  drm/msm/a6xx: Move force keepalive vote removal to a6xx_gmu_force_off()
  ...
 2023-06-29 11:00:17 -07:00
Linus Torvalds
f8824e151f sound updates for 6.5-rc1 
Lots of changes as usual, but the only significant stuff in ALSA core
 part is the MIDI 2.0 support, while ASoC core kept receiving the code
 refactoring.  The majority of changes are seen rather in device
 drivers, and quite a few new drivers can be found there.
 
 Here we go, some highlights:
 
 ALSA and ASoC Core:
 - Support of MIDI 2.0 devices: rawmidi and sequencer API have been
   extended for the support of the new UMP (Universal MIDI Packet)
   protocol, USB audio driver got the USB MIDI 2.0 interface support
 - Continued refactoring around ASoC DAI links and the ordering of
   trigger callbacks
 - PCM ABI extension for better drain support
 
 ASoC Drivers:
 - Conversions of many drivers to use maple tree based caches
 - Everlasting improvement works on ASoC Intel drivers
 - Compressed audio support for Qualcomm
 - Support for AMD SoundWire, Analog Devices SSM3515, Google Chameleon,
   Ingenic X1000, Intel systems with various CODECs, Loongson
   platforms, Maxim MAX98388, Mediatek MT8188, Nuvoton NAU8825C, NXP
   platforms with NAU8822, Qualcomm WSA884x, StarFive JH7110, Texas
   Instruments TAS2781
 
 HD-audio:
 - Quirks for HP and ASUS machines
 - CS35L41 HD-audio codec fixes
 - Loongson HD-audio support
 
 Misc:
 - A new virtual PCM test driver for kselftests
 - Continued refactoring and improvements on the legacy emu10k1 driver
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Merge tag 'sound-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "Lots of changes as usual, but the only significant stuff in ALSA core
  part is the MIDI 2.0 support, while ASoC core kept receiving the code
  refactoring. The majority of changes are seen rather in device
  drivers, and quite a few new drivers can be found there.

  Here we go, some highlights:

  ALSA and ASoC Core:
   - Support of MIDI 2.0 devices: rawmidi and sequencer API have been
     extended for the support of the new UMP (Universal MIDI Packet)
     protocol, USB audio driver got the USB MIDI 2.0 interface support
   - Continued refactoring around ASoC DAI links and the ordering of
     trigger callbacks
   - PCM ABI extension for better drain support

  ASoC Drivers:
   - Conversions of many drivers to use maple tree based caches
   - Everlasting improvement works on ASoC Intel drivers
   - Compressed audio support for Qualcomm
   - Support for AMD SoundWire, Analog Devices SSM3515, Google
     Chameleon, Ingenic X1000, Intel systems with various CODECs,
     Loongson platforms, Maxim MAX98388, Mediatek MT8188, Nuvoton
     NAU8825C, NXP platforms with NAU8822, Qualcomm WSA884x, StarFive
     JH7110, Texas Instruments TAS2781

  HD-audio:
   - Quirks for HP and ASUS machines
   - CS35L41 HD-audio codec fixes
   - Loongson HD-audio support

  Misc:
   - A new virtual PCM test driver for kselftests
   - Continued refactoring and improvements on the legacy emu10k1
     driver"

* tag 'sound-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (556 commits)
  ALSA: hda/realtek: Enable mute/micmute LEDs and limit mic boost on EliteBook
  ASoC: hdmi-codec: fix channel info for compressed formats
  ALSA: pcm: fix ELD constraints for (E)AC3, DTS(-HD) and MLP formats
  ASoC: core: Always store of_node when getting DAI link component
  ASoC: tas2781: Fix error code in tas2781_load_calibration()
  ASoC: amd: update pm_runtime enable sequence
  ALSA: ump: Export MIDI1 / UMP conversion helpers
  ASoC: tas2781: fix Kconfig dependencies
  ASoC: amd: acp: remove acp poweroff function
  ASoC: amd: acp: clear pdm dma interrupt mask
  ASoC: codecs: max98090: Allow dsp_a mode
  ASoC: qcom: common: add default jack dapm pins
  ASoC: loongson: fix address space confusion
  ASoC: dt-bindings: microchip,sama7g5-pdmc: Simplify "microchip,mic-pos" constraints
  ASoC: tegra: Remove stale comments in AHUB
  ASoC: tegra: Use normal system sleep for ASRC
  ALSA: hda/realtek: Add quirks for ROG ALLY CS35l41 audio
  ASoC: fsl-asoc-card: Allow passing the number of slots in use
  ASoC: codecs: wsa884x: Add WSA884x family of speakers
  ASoC: dt-bindings: qcom,wsa8840: Add WSA884x family of speakers
  ...
 2023-06-29 10:46:47 -07:00
Linus Torvalds
86e203edf2 Input updates for 6.5 merge window: 
- improvements to PS/2 handling for case when EC has already latched a
   scancode in the data register, but the kernel expects to receive an
   ACK to a command it sent to a device (such as keyboard LED toggle)
 
 - input drivers for devices connected over I2C bus have been switched
   back to using [new] .probe()
 
 - uinput allows userspace to inject timestamps for input events
 
 - support for capacitive keys in Atmel touch controller driver
 
 - assorted fixes to drv260x, pwm-vibra, ili210x, adxl34x, and other
   drivers.
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Merge tag 'input-for-v6.5-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input updates from Dmitry Torokhov:

 - improvements to PS/2 handling for case when EC has already latched a
   scancode in the data register, but the kernel expects to receive an
   ACK to a command it sent to a device (such as keyboard LED toggle)

 - input drivers for devices connected over I2C bus have been switched
   back to using [new] .probe()

 - uinput allows userspace to inject timestamps for input events

 - support for capacitive keys in Atmel touch controller driver

 - assorted fixes to drv260x, pwm-vibra, ili210x, adxl34x, and other
   drivers

* tag 'input-for-v6.5-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (40 commits)
  Input: pm8941-powerkey - fix debounce on gen2+ PMICs
  MAINTAINERS: Adjust Qualcomm driver globbing
  Input: gameport - provide default trigger() and read()
  Input: tps65219-pwrbutton - use regmap_set_bits()
  Input: tps65219-pwrbutton - convert to .remove_new()
  Input: tests - add test to cover all input_grab_device() function
  Input: gpio-keys - use input_report_key()
  Input: xpad - spelling fixes for "Xbox"
  Input: add HAS_IOPORT dependencies
  Input: libps2 - do not discard non-ack bytes when controlling LEDs
  Input: libps2 - introduce common interrupt handler
  Input: libps2 - fix aborting PS/2 commands
  Input: libps2 - fix NAK handling
  Input: libps2 - rework handling of command response
  Input: libps2 - remove special handling of ACK for command byte
  Input: libps2 - attach ps2dev instances as serio port's drvdata
  Input: Switch i2c drivers back to use .probe()
  dt-bindings: input: cypress,cyapa: convert to dtschema
  Input: adxl34x - do not hardcode interrupt trigger type
  Input: pwm-vibra - add support for enable GPIO
  ...
 2023-06-29 10:29:46 -07:00
Linus Torvalds
0e382fa72b for-linus-2023062701 
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Merge tag 'for-linus-2023062701' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid

Pull HID updates from Jiri Kosina:

 - more bullet-proof handling of devres-managed resources in HID core
   (Dmitry Torokhov)

 - conversion of hid-wacom to use ktime_t (Jason Gerecke)

 - touch selftests for hid-wacom (Joshua Dickens)

 - support for nVidia Thunderstrike (SHIELD 2017) controller (Rahul
   Rameshbabu)

 - power management reset-during-suspend fix for goodix Chromebook
   devices (Fei Shao)

 - assorted device ID additions, device-specific quirks and code
   cleanups

* tag 'for-linus-2023062701' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (27 commits)
  HID: wacom: Use ktime_t rather than int when dealing with timestamps
  HID: hidraw: fix data race on device refcount
  HID: intel-ish-hid: ipc: Add Arrow Lake PCI device ID
  HID: logitech-hidpp: add HIDPP_QUIRK_DELAYED_INIT for the T651.
  HID: add quirk for 03f0:464a HP Elite Presenter Mouse
  HID: nvidia-shield: Support LED functionality for Thunderstrike
  HID: nvidia-shield: Add mappings for consumer HID USAGE buttons
  HID: nvidia-shield: Initial driver implementation with Thunderstrike support
  HID: apple: Option to swap only left side mod keys
  HID: uclogic: Modular KUnit tests should not depend on KUNIT=y
  HID: fix an error code in hid_check_device_match()
  HID: logitech-hidpp: Add USB and Bluetooth IDs for the Logitech G915 TKL Keyboard
  HID: i2c-hid: Switch i2c drivers back to use .probe()
  HID: i2c-hid: goodix: Add support for "goodix,no-reset-during-suspend" property
  dt-bindings: input: goodix: Add "goodix,no-reset-during-suspend" property
  HID: microsoft: Add rumble support to latest xbox controllers
  selftests: hid: Add touch tests for Wacom devices
  HID: ensure timely release of driver-allocated resources
  HID: split apart hid_device_probe to make logic more apparent
  HID: amd_sfh: Split sensor and HID initialization for SFH1.1
  ...
 2023-06-29 10:24:40 -07:00
Linus Torvalds
675285ad81 fbdev fixes for 6.5-rc1: 
- fix potential OOB read in fast_imageblit()
 - fbdev/media: Use GPIO descriptors for VIA GPIO
 - broadsheetfb & metronomefb: Add MODULE_FIRMWARE macro
 - omapfb: error handling fix in mipid_spi_probe()
 - sh_mobile_lcdcfb, sh7760fb: Typo and warning fixes
 - hitfb: code cleanups
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Merge tag 'fbdev-for-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev

Pull fbdev updates from Helge Deller:
 "Some fbdev fixes & cleanups.

  Includes is a fix for a potential out-of-bound memory access
  in fast_imageblit() and the switch of the VIA fbdev driver to
  use GPIO descriptors.

  Summary:
   - fix potential OOB read in fast_imageblit()
   - fbdev/media: Use GPIO descriptors for VIA GPIO
   - broadsheetfb & metronomefb: Add MODULE_FIRMWARE macro
   - omapfb: error handling fix in mipid_spi_probe()
   - sh_mobile_lcdcfb, sh7760fb: Typo and warning fixes
   - hitfb: code cleanups"

* tag 'fbdev-for-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbdev: fix potential OOB read in fast_imageblit()
  MAINTAINERS: adjust entry in VIA UNICHROME(PRO)/CHROME9 FRAMEBUFFER DRIVER
  fbdev: sh7760fb: Fix -Wimplicit-fallthrough warnings
  fbdev: sh_mobile_lcdcfb: Fix ARGB32 overlay format typo
  fbdev: hitfb: Use NULL for pointers
  fbdev: hitfb: Fix integer-to-pointer cast
  fbdev/media: Use GPIO descriptors for VIA GPIO
  video/hdmi: Reorder fields in 'struct hdmi_avi_infoframe'
  fbdev: broadsheetfb: Add MODULE_FIRMWARE macro
  fbdev: metronomefb: Add MODULE_FIRMWARE macro
  fbdev: hitfb: Declare hitfb_blank() as static
  fbdev: omapfb: lcd_mipid: Fix an error handling path in mipid_spi_probe()
 2023-06-29 10:20:38 -07:00
Linus Torvalds
e5476f57b3 gpio updates for v6.5 
Core GPIO library:
 - remove unused symbols
 - don't spam the kernel log with messages about hogs
 - remove old sysfs API cruft
 - improve handling of GPIO masks
 
 New drivers
 - add a driver for the BlueField-3 GPIO controller
 - add GPIO support for the TPS65219 PMIC
 
 Driver improvements:
 - extend the gpio-aggregator driver to support ramp-up/ramp-down delay
 - remove unnecessary CONFIG_OF guards from gpio-aggregator
 - readability improvements in gpio-tangier
 - switch i2c drivers back to using probe() now that it's been converted in
   the i2c subsystem to not taking the id parameter
 - remove unused inclusions of of_gpio.h in several drivers
 - make pm ops static in gpio-davinci and fix a comment
 - use more devres in drivers to shrink and simplify the code
 - add missing include in gpio-sa1100
 - add HAS_IOPORT KConfig dependency where needed
 - add permissions checks before accessing pins in gpio-tegra186
 - convert the gpio-zynq driver to using immutable irqchips
 - preserve output settings set by the bootloader in gpio-mpc8xxx
 
 Selftests:
 - tweak the variable naming in script tests
 
 Device tree updates:
 - convert gpio-mmio and gpio-stmpe to YAML
 - add parsing of GPIO hogs to gpio-vf610
 - add bindings for the Cirrus EP93xx GPIO controller
 - add gpio-line-names property to the gpio-pca9570 bindings
 - extend the binding for x-powers,axp209 with another block
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Merge tag 'gpio-updates-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have two new drivers, some improvements to the core code, lots of
  different updates to existing GPIO drivers and some dt-bindings on
  top.

  There's nothing controversial in here and almost everything has been
  in next for more than a week (95% a lot longer than this). The only
  thing that has spent less time in next is a new driver so no risk of
  regressions.

  The single merge pulls in changes that remove all usage of global GPIO
  numbers from arch/arm/mach-omap.

  Core GPIO library:
   - remove unused symbols
   - don't spam the kernel log with messages about hogs
   - remove old sysfs API cruft
   - improve handling of GPIO masks

  New drivers:
   - add a driver for the BlueField-3 GPIO controller
   - add GPIO support for the TPS65219 PMIC

  Driver improvements:
   - extend the gpio-aggregator driver to support ramp-up/ramp-down
     delay
   - remove unnecessary CONFIG_OF guards from gpio-aggregator
   - readability improvements in gpio-tangier
   - switch i2c drivers back to using probe() now that it's been
     converted in the i2c subsystem to not taking the id parameter
   - remove unused inclusions of of_gpio.h in several drivers
   - make pm ops static in gpio-davinci and fix a comment
   - use more devres in drivers to shrink and simplify the code
   - add missing include in gpio-sa1100
   - add HAS_IOPORT KConfig dependency where needed
   - add permissions checks before accessing pins in gpio-tegra186
   - convert the gpio-zynq driver to using immutable irqchips
   - preserve output settings set by the bootloader in gpio-mpc8xxx

  Selftests:
   - tweak the variable naming in script tests

  Device tree updates:
   - convert gpio-mmio and gpio-stmpe to YAML
   - add parsing of GPIO hogs to gpio-vf610
   - add bindings for the Cirrus EP93xx GPIO controller
   - add gpio-line-names property to the gpio-pca9570 bindings
   - extend the binding for x-powers,axp209 with another block"

* tag 'gpio-updates-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (58 commits)
  of: unittest: drop assertions for GPIO hog messages
  gpiolib: Drop unused domain_ops memeber of GPIO IRQ chip
  gpio: synq: remove unused zynq_gpio_irq_reqres/zynq_gpio_irq_relres
  dt-bindings: gpio: gpio-vf610: Add parsing of hogs
  gpio: lpc18xx: Remove unused of_gpio.h inclusion
  gpio: xra1403: Remove unused of_gpio.h inclusion
  gpio: mpc8xxx: Remove unused of_gpio.h inclusion
  dt-bindings: gpio: Add Cirrus EP93xx
  gpio: mpc8xxx: latch GPIOs state on module load when configured as output
  selftests: gpio: gpio-sim: Use same variable name for sysfs pathname
  gpio: mlxbf3: Add gpio driver support
  gpio: delay: Remove duplicative functionality
  gpio: aggregator: Set up a parser of delay line parameters
  gpio: aggregator: Support delay for setting up individual GPIOs
  gpio: aggregator: Remove CONFIG_OF and of_match_ptr() protections
  dt-bindings: gpio: pca9570: add gpio-line-names property
  gpiolib: remove unused gpio_cansleep()
  gpio: tps65219: add GPIO support for TPS65219 PMIC
  gpio: zynq: fix zynqmp_gpio not an immutable chip warning
  gpio: davinci: make davinci_gpio_dev_pm_ops static
  ...
 2023-06-29 10:11:10 -07:00
Linus Torvalds
ff7ddcf0db This batch of clk driver updates for the merge window contains almost no new 
SoC support. Instead there's a treewide patch series from Maxime that makes
 clk_ops::determine_rate mandatory for muxes. Beyond that core framework change
 we have the usual pile of clk driver updates such as migrating i2c drivers to
 use .probe() again or YAMLfication of clk DT bindings so we can validate DTBs.
 Overall the SoCs that got the most updates this time around in terms of
 diffstat are the Amlogic and Mediatek drivers because they added new SoC
 support or fixed up various drivers to have proper data.
 
 In general things look kinda quiet. I suspect the core framework change may
 still shake out some problems after the merge window, mostly because not
 everyone tests linux-next where that series has been for some number of weeks.
 I saw that there's at least one pending fix for Tegra that needs to be wrapped
 up into a proper patch. I'll try to catch those bits before the window closes
 so that -rc1 is bootable. More details below.
 
 Core:
  - Make clk_ops::determine_rate mandatory for muxes
 
 New Drivers:
  - Add amlogic a1 SoC family PLL and peripheral clock controller support
 
 Updates:
  - Handle allocation failures from kasprintf() and friends
  - Migrate platform clk drivers to .remove_new()
  - Migrate i2c clk drivers to .probe() instead of .probe_new()
  - Remove CLK_SET_PARENT from all Mediatek MSDC core clocks
  - Add infra_ao reset support for Mediatek MT8188 SoCs
  - Align driver_data to i2c_device_id tables in some i2c clk drivers
  - Use device_get_match_data() in vc5 clk driver
  - New Kconfig symbol name (SOC_MICROCHIP_POLARFIRE) for Microchip FPGA clock
    drivers
  - Use of_property_read_bool() to read "microchip,pic32mzda-sosc" boolean DT
    property in clk-pic32mzda
  - Convert AT91 clock dt-bindings to YAML
  - Remove CLK_SET_RATE_PARENT flag from LDB clocks on i.MX6SX
  - Keep i.MX UART clocks enabled during kernel boot if earlycon is set
  - Drop imx_unregister_clocks() as there are no users anymore
  - Switch to _safe iterator on imx_clk_scu_unregister() to avoid use after free
  - Add determine_rate op to the imx8m composite clock
  - Use device managed API for iomap and kzalloc for i.MXRT1050, i.MX8MN,
    i.MX8MP and i.MX93 clock controller drivers
  - Add missing interrupt DT property for the i.MX8M clock controller
  - Re-add support for Exynos4212 clock controller because we are
    re-introducing the SoC in the mainline
  - Add CONFIG_OF dependency to Samsung clk Kconfig symbols to solve some
    objtool warnings
  - Preselect PLL MIPI as TCON0 parent for Allwinner A64 SoC
  - Convert the Renesas clock drivers to readl_poll_timeout_atomic()
  - Add PWM clock on Renesas R-Car V3U
  - Fix PLL5 on Renesas RZ/G2L and RZ/V2L
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "This batch of clk driver updates contains almost no new SoC support.
  Instead there's a treewide patch series from Maxime that makes
  clk_ops::determine_rate mandatory for muxes.

  Beyond that core framework change we have the usual pile of clk driver
  updates such as migrating i2c drivers to use .probe() again or
  YAMLfication of clk DT bindings so we can validate DTBs.

  Overall the SoCs that got the most updates this time around in terms
  of diffstat are the Amlogic and Mediatek drivers because they added
  new SoC support or fixed up various drivers to have proper data.

  In general things look kinda quiet. I suspect the core framework
  change may still shake out some problems after the merge window,
  mostly because not everyone tests linux-next where that series has
  been for some number of weeks. I saw that there's at least one pending
  fix for Tegra that needs to be wrapped up into a proper patch. I'll
  try to catch those bits before the window closes so that -rc1 is
  bootable. More details below.

  Core:
   - Make clk_ops::determine_rate mandatory for muxes

  New Drivers:
   - Add amlogic a1 SoC family PLL and peripheral clock controller support

  Updates:
   - Handle allocation failures from kasprintf() and friends
   - Migrate platform clk drivers to .remove_new()
   - Migrate i2c clk drivers to .probe() instead of .probe_new()
   - Remove CLK_SET_PARENT from all Mediatek MSDC core clocks
   - Add infra_ao reset support for Mediatek MT8188 SoCs
   - Align driver_data to i2c_device_id tables in some i2c clk drivers
   - Use device_get_match_data() in vc5 clk driver
   - New Kconfig symbol name (SOC_MICROCHIP_POLARFIRE) for Microchip
     FPGA clock drivers
   - Use of_property_read_bool() to read "microchip,pic32mzda-sosc"
     boolean DT property in clk-pic32mzda
   - Convert AT91 clock dt-bindings to YAML
   - Remove CLK_SET_RATE_PARENT flag from LDB clocks on i.MX6SX
   - Keep i.MX UART clocks enabled during kernel boot if earlycon is set
   - Drop imx_unregister_clocks() as there are no users anymore
   - Switch to _safe iterator on imx_clk_scu_unregister() to avoid use
     after free
   - Add determine_rate op to the imx8m composite clock
   - Use device managed API for iomap and kzalloc for i.MXRT1050,
     i.MX8MN, i.MX8MP and i.MX93 clock controller drivers
   - Add missing interrupt DT property for the i.MX8M clock controller
   - Re-add support for Exynos4212 clock controller because we are
     re-introducing the SoC in the mainline
   - Add CONFIG_OF dependency to Samsung clk Kconfig symbols to solve
     some objtool warnings
   - Preselect PLL MIPI as TCON0 parent for Allwinner A64 SoC
   - Convert the Renesas clock drivers to readl_poll_timeout_atomic()
   - Add PWM clock on Renesas R-Car V3U
   - Fix PLL5 on Renesas RZ/G2L and RZ/V2L"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (149 commits)
  clk: fix typo in clk_hw_register_fixed_rate_parent_data() macro
  clk: Fix memory leak in devm_clk_notifier_register()
  clk: mvebu: Iterate over possible CPUs instead of DT CPU nodes
  clk: mvebu: Use of_get_cpu_hwid() to read CPU ID
  MAINTAINERS: Add Marvell mvebu clock drivers
  clk: clocking-wizard: check return value of devm_kasprintf()
  clk: ti: clkctrl: check return value of kasprintf()
  clk: keystone: sci-clk: check return value of kasprintf()
  clk: si5341: free unused memory on probe failure
  clk: si5341: check return value of {devm_}kasprintf()
  clk: si5341: return error if one synth clock registration fails
  clk: cdce925: check return value of kasprintf()
  clk: vc5: check memory returned by kasprintf()
  clk: mediatek: clk-mt8173-apmixedsys: Fix iomap not released issue
  clk: mediatek: clk-mt8173-apmixedsys: Fix return value for of_iomap() error
  clk: mediatek: clk-mtk: Grab iomem pointer for divider clocks
  clk: keystone: syscon-clk: Add support for audio refclk
  dt-bindings: clock: Add binding documentation for TI Audio REFCLK
  dt-bindings: clock: ehrpwm: Remove unneeded syscon compatible
  clk: keystone: syscon-clk: Allow the clock node to not be of type syscon
  ...
 2023-06-29 10:05:47 -07:00
Linus Torvalds
acd1d46b0d hwmon updates for v6.5 
* New drivers
 
   - Driver for MAX31827
 
   - Driver to support HP WMI Sensors
 
 * Added support to existing drivers
 
   - aht10: Support for AHT20
 
   - aquacomputer_d5next: Support for Aquacomputer Leakshield
 
   - asus-ec-sensors: Support for ROG Crosshair X670E Hero
 
   - corsair-psu: Cleanups and support for series 2022 and 2023
 
   - it87: Various improvements and support for IT8732F
 
   - nct6683: Support customer ID of some MSI boards.
 
   - nct6755: Support for NCT6799D
 
   - oxp-sensors: Various cleanups; support for AYANEO 2, Geek, OXP Mini,
     and AOKZOE A1 PRO
 
   - pmbus/max16601: Support for new revisions of MAX16508
 
   - pmbus/adm1275: Disable ADC while updating PMON_CONFIG, and fix problems
     with temperature monitoring on ADM1272
 
   - sht3x: Various cleanups; support for medium repeatability
 
 * Other notable changes
 
   - Switched regmap drivers to Maple tree support where appropriate
 
 * Various other minor fixes and improvements
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Merge tag 'hwmon-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "New drivers:

   - Driver for MAX31827

   - Driver to support HP WMI Sensors

  Added support to existing drivers:

   - aht10: Support for AHT20

   - aquacomputer_d5next: Support for Aquacomputer Leakshield

   - asus-ec-sensors: Support for ROG Crosshair X670E Hero

   - corsair-psu: Cleanups and support for series 2022 and 2023

   - it87: Various improvements and support for IT8732F

   - nct6683: Support customer ID of some MSI boards.

   - nct6755: Support for NCT6799D

   - oxp-sensors: Various cleanups; support for AYANEO 2, Geek, OXP
     Mini, and AOKZOE A1 PRO

   - pmbus/max16601: Support for new revisions of MAX16508

   - pmbus/adm1275: Disable ADC while updating PMON_CONFIG, and fix
     problems with temperature monitoring on ADM1272

   - sht3x: Various cleanups; support for medium repeatability

  Other notable changes:

   - Switched regmap drivers to Maple tree support where appropriate

  Various other minor fixes and improvements"

* tag 'hwmon-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (54 commits)
  hwmon: max31827: Switch back to use struct i2c_driver::probe
  hwmon: (oxp-sensors) Add support for AOKZOE A1 PRO
  hwmon: (corsair-psu) update Series 2022 and 2023 support
  hwmon: (corsair-psu) various cleanups
  hwmon: (corsair-psu) add support for reading PWM values and mode
  hwmon: (pmbus/adm1275) Disable ADC while updating PMON_CONFIG
  hwmon: (pmbus/adm1275) Prepare for protected write to PMON_CONFIG
  hwmon: (oxp-sensors) Simplify logic of error return
  hwmon: (oxp-sensors) Remove unused header
  hwmon: (nct6755) Add support for NCT6799D
  hwmon: (oxp-sensors) Add tt_toggle attribute on supported boards
  hwmon: (sht3x) complement sysfs interface for sts3x
  hwmon: (sht3x) Add new non-stardard sysfs attribute
  hwmon: (sht3x) add medium repeatability support
  hwmon: (sht3x)replace "high-precision" property to "repeatability"
  hwmon: (sht3x) remove blocking_io property
  hwmon: (sht3x) remove sht3x_platform_data
  hwmon: (pmbus/max16601) Add support for new revisions of MAX16508
  Documentation/hwmon: Fix description of devm_hwmon_device_unregister()
  hwmon: (tmp464) Use maple tree register cache
  ...
 2023-06-29 10:01:25 -07:00
Hugh Dickins
e8c716bc68 mm/khugepaged: fix regression in collapse_file() 
There is no xas_pause(&xas) in collapse_file()'s main loop, at the points
where it does xas_unlock_irq(&xas) and then continues.

That would explain why, once two weeks ago and twice yesterday, I have
hit the VM_BUG_ON_PAGE(page != xas_load(&xas), page) since "mm/khugepaged:
fix iteration in collapse_file" removed the xas_set(&xas, index) just
before it: xas.xa_node could be left pointing to a stale node, if there
was concurrent activity on the file which transformed its xarray.

I tried inserting xas_pause()s, but then even bootup crashed on that
VM_BUG_ON_PAGE(): there appears to be a subtle "nextness" implicit in
xas_pause().

xas_next() and xas_pause() are good for use in simple loops, but not in
this one: xas_set() worked well until now, so use xas_set(&xas, index)
explicitly at the head of the loop; and change that VM_BUG_ON_PAGE() not
to need its own xas_set(), and not to interfere with the xa_state (which
would probably stop the crashes from xas_pause(), but I trust that less).

The user-visible effects of this bug (if VM_BUG_ONs are configured out)
would be data loss and data leak - potentially - though in practice I
expect it is more likely that a subsequent check (e.g. on mapping or on
nr_none) would notice an inconsistency, and just abandon the collapse.

Link: https://lore.kernel.org/linux-mm/f18e4b64-3f88-a8ab-56cc-d1f5f9c58d4@google.com/
Fixes: c8a8f3b4a9 ("mm/khugepaged: fix iteration in collapse_file")
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Stevens <stevensd@chromium.org>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2023-06-29 09:41:45 -07:00
Linus Torvalds
9471f1f2f5 Merge branch 'expand-stack' 
This modifies our user mode stack expansion code to always take the
mmap_lock for writing before modifying the VM layout.

It's actually something we always technically should have done, but
because we didn't strictly need it, we were being lazy ("opportunistic"
sounds so much better, doesn't it?) about things, and had this hack in
place where we would extend the stack vma in-place without doing the
proper locking.

And it worked fine.  We just needed to change vm_start (or, in the case
of grow-up stacks, vm_end) and together with some special ad-hoc locking
using the anon_vma lock and the mm->page_table_lock, it all was fairly
straightforward.

That is, it was all fine until Ruihan Li pointed out that now that the
vma layout uses the maple tree code, we *really* don't just change
vm_start and vm_end any more, and the locking really is broken.  Oops.

It's not actually all _that_ horrible to fix this once and for all, and
do proper locking, but it's a bit painful.  We have basically three
different cases of stack expansion, and they all work just a bit
differently:

 - the common and obvious case is the page fault handling. It's actually
   fairly simple and straightforward, except for the fact that we have
   something like 24 different versions of it, and you end up in a maze
   of twisty little passages, all alike.

 - the simplest case is the execve() code that creates a new stack.
   There are no real locking concerns because it's all in a private new
   VM that hasn't been exposed to anybody, but lockdep still can end up
   unhappy if you get it wrong.

 - and finally, we have GUP and page pinning, which shouldn't really be
   expanding the stack in the first place, but in addition to execve()
   we also use it for ptrace(). And debuggers do want to possibly access
   memory under the stack pointer and thus need to be able to expand the
   stack as a special case.

None of these cases are exactly complicated, but the page fault case in
particular is just repeated slightly differently many many times.  And
ia64 in particular has a fairly complicated situation where you can have
both a regular grow-down stack _and_ a special grow-up stack for the
register backing store.

So to make this slightly more manageable, the bulk of this series is to
first create a helper function for the most common page fault case, and
convert all the straightforward architectures to it.

Thus the new 'lock_mm_and_find_vma()' helper function, which ends up
being used by x86, arm, powerpc, mips, riscv, alpha, arc, csky, hexagon,
loongarch, nios2, sh, sparc32, and xtensa.  So we not only convert more
than half the architectures, we now have more shared code and avoid some
of those twisty little passages.

And largely due to this common helper function, the full diffstat of
this series ends up deleting more lines than it adds.

That still leaves eight architectures (ia64, m68k, microblaze, openrisc,
parisc, s390, sparc64 and um) that end up doing 'expand_stack()'
manually because they are doing something slightly different from the
normal pattern.  Along with the couple of special cases in execve() and
GUP.

So there's a couple of patches that first create 'locked' helper
versions of the stack expansion functions, so that there's a obvious
path forward in the conversion.  The execve() case is then actually
pretty simple, and is a nice cleanup from our old "grow-up stackls are
special, because at execve time even they grow down".

The #ifdef CONFIG_STACK_GROWSUP in that code just goes away, because
it's just more straightforward to write out the stack expansion there
manually, instead od having get_user_pages_remote() do it for us in some
situations but not others and have to worry about locking rules for GUP.

And the final step is then to just convert the remaining odd cases to a
new world order where 'expand_stack()' is called with the mmap_lock held
for reading, but where it might drop it and upgrade it to a write, only
to return with it held for reading (in the success case) or with it
completely dropped (in the failure case).

In the process, we remove all the stack expansion from GUP (where
dropping the lock wouldn't be ok without special rules anyway), and add
it in manually to __access_remote_vm() for ptrace().

Thanks to Adrian Glaubitz and Frank Scheiner who tested the ia64 cases.
Everything else here felt pretty straightforward, but the ia64 rules for
stack expansion are really quite odd and very different from everything
else.  Also thanks to Vegard Nossum who caught me getting one of those
odd conditions entirely the wrong way around.

Anyway, I think I want to actually move all the stack expansion code to
a whole new file of its own, rather than have it split up between
mm/mmap.c and mm/memory.c, but since this will have to be backported to
the initial maple tree vma introduction anyway, I tried to keep the
patches _fairly_ minimal.

Also, while I don't think it's valid to expand the stack from GUP, the
final patch in here is a "warn if some crazy GUP user wants to try to
expand the stack" patch.  That one will be reverted before the final
release, but it's left to catch any odd cases during the merge window
and release candidates.

Reported-by: Ruihan Li <lrh2000@pku.edu.cn>

* branch 'expand-stack':
  gup: add warning if some caller would seem to want stack expansion
  mm: always expand the stack with the mmap write lock held
  execve: expand new process stack manually ahead of time
  mm: make find_extend_vma() fail if write lock not held
  powerpc/mm: convert coprocessor fault to lock_mm_and_find_vma()
  mm/fault: convert remaining simple cases to lock_mm_and_find_vma()
  arm/mm: Convert to using lock_mm_and_find_vma()
  riscv/mm: Convert to using lock_mm_and_find_vma()
  mips/mm: Convert to using lock_mm_and_find_vma()
  powerpc/mm: Convert to using lock_mm_and_find_vma()
  arm64/mm: Convert to using lock_mm_and_find_vma()
  mm: make the page fault mmap locking killable
  mm: introduce new 'lock_mm_and_find_vma()' page fault helper
 2023-06-28 20:35:21 -07:00
Linus Torvalds
3a8a670eee Networking changes for 6.5. 
Core
 ----
 
  - Rework the sendpage & splice implementations. Instead of feeding
    data into sockets page by page extend sendmsg handlers to support
    taking a reference on the data, controlled by a new flag called
    MSG_SPLICE_PAGES. Rework the handling of unexpected-end-of-file
    to invoke an additional callback instead of trying to predict what
    the right combination of MORE/NOTLAST flags is.
    Remove the MSG_SENDPAGE_NOTLAST flag completely.
 
  - Implement SCM_PIDFD, a new type of CMSG type analogous to
    SCM_CREDENTIALS, but it contains pidfd instead of plain pid.
 
  - Enable socket busy polling with CONFIG_RT.
 
  - Improve reliability and efficiency of reporting for ref_tracker.
 
  - Auto-generate a user space C library for various Netlink families.
 
 Protocols
 ---------
 
  - Allow TCP to shrink the advertised window when necessary, prevent
    sk_rcvbuf auto-tuning from growing the window all the way up to
    tcp_rmem[2].
 
  - Use per-VMA locking for "page-flipping" TCP receive zerocopy.
 
  - Prepare TCP for device-to-device data transfers, by making sure
    that payloads are always attached to skbs as page frags.
 
  - Make the backoff time for the first N TCP SYN retransmissions
    linear. Exponential backoff is unnecessarily conservative.
 
  - Create a new MPTCP getsockopt to retrieve all info (MPTCP_FULL_INFO).
 
  - Avoid waking up applications using TLS sockets until we have
    a full record.
 
  - Allow using kernel memory for protocol ioctl callbacks, paving
    the way to issuing ioctls over io_uring.
 
  - Add nolocalbypass option to VxLAN, forcing packets to be fully
    encapsulated even if they are destined for a local IP address.
 
  - Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
    in-kernel ECMP implementation (e.g. Open vSwitch) select the same
    link for all packets. Support L4 symmetric hashing in Open vSwitch.
 
  - PPPoE: make number of hash bits configurable.
 
  - Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
    (ipconfig).
 
  - Add layer 2 miss indication and filtering, allowing higher layers
    (e.g. ACL filters) to make forwarding decisions based on whether
    packet matched forwarding state in lower devices (bridge).
 
  - Support matching on Connectivity Fault Management (CFM) packets.
 
  - Hide the "link becomes ready" IPv6 messages by demoting their
    printk level to debug.
 
  - HSR: don't enable promiscuous mode if device offloads the proto.
 
  - Support active scanning in IEEE 802.15.4.
 
  - Continue work on Multi-Link Operation for WiFi 7.
 
 BPF
 ---
 
  - Add precision propagation for subprogs and callbacks. This allows
    maintaining verification efficiency when subprograms are used,
    or in fact passing the verifier at all for complex programs,
    especially those using open-coded iterators.
 
  - Improve BPF's {g,s}setsockopt() length handling. Previously BPF
    assumed the length is always equal to the amount of written data.
    But some protos allow passing a NULL buffer to discover what
    the output buffer *should* be, without writing anything.
 
  - Accept dynptr memory as memory arguments passed to helpers.
 
  - Add routing table ID to bpf_fib_lookup BPF helper.
 
  - Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands.
 
  - Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
    maps as read-only).
 
  - Show target_{obj,btf}_id in tracing link fdinfo.
 
  - Addition of several new kfuncs (most of the names are self-explanatory):
    - Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
      bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
      and bpf_dynptr_clone().
    - bpf_task_under_cgroup()
    - bpf_sock_destroy() - force closing sockets
    - bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs
 
 Netfilter
 ---------
 
  - Relax set/map validation checks in nf_tables. Allow checking
    presence of an entry in a map without using the value.
 
  - Increase ip_vs_conn_tab_bits range for 64BIT builds.
 
  - Allow updating size of a set.
 
  - Improve NAT tuple selection when connection is closing.
 
 Driver API
 ----------
 
  - Integrate netdev with LED subsystem, to allow configuring HW
    "offloaded" blinking of LEDs based on link state and activity
    (i.e. packets coming in and out).
 
  - Support configuring rate selection pins of SFP modules.
 
  - Factor Clause 73 auto-negotiation code out of the drivers, provide
    common helper routines.
 
  - Add more fool-proof helpers for managing lifetime of MDIO devices
    associated with the PCS layer.
 
  - Allow drivers to report advanced statistics related to Time Aware
    scheduler offload (taprio).
 
  - Allow opting out of VF statistics in link dump, to allow more VFs
    to fit into the message.
 
  - Split devlink instance and devlink port operations.
 
 New hardware / drivers
 ----------------------
 
  - Ethernet:
    - Synopsys EMAC4 IP support (stmmac)
    - Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
    - Marvell 88E6250 7 port switches
    - Microchip LAN8650/1 Rev.B0 PHYs
    - MediaTek MT7981/MT7988 built-in 1GE PHY driver
 
  - WiFi:
    - Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
    - Realtek RTL8723DS (SDIO variant)
    - Realtek RTL8851BE
 
  - CAN:
    - Fintek F81604
 
 Drivers
 -------
 
  - Ethernet NICs:
    - Intel (100G, ice):
      - support dynamic interrupt allocation
      - use meta data match instead of VF MAC addr on slow-path
    - nVidia/Mellanox:
      - extend link aggregation to handle 4, rather than just 2 ports
      - spawn sub-functions without any features by default
    - OcteonTX2:
      - support HTB (Tx scheduling/QoS) offload
      - make RSS hash generation configurable
      - support selecting Rx queue using TC filters
    - Wangxun (ngbe/txgbe):
      - add basic Tx/Rx packet offloads
      - add phylink support (SFP/PCS control)
    - Freescale/NXP (enetc):
      - report TAPRIO packet statistics
    - Solarflare/AMD:
      - support matching on IP ToS and UDP source port of outer header
      - VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
      - add devlink dev info support for EF10
 
  - Virtual NICs:
    - Microsoft vNIC:
      - size the Rx indirection table based on requested configuration
      - support VLAN tagging
    - Amazon vNIC:
      - try to reuse Rx buffers if not fully consumed, useful for ARM
        servers running with 16kB pages
    - Google vNIC:
      - support TCP segmentation of >64kB frames
 
  - Ethernet embedded switches:
    - Marvell (mv88e6xxx):
      - enable USXGMII (88E6191X)
    - Microchip:
     - lan966x: add support for Egress Stage 0 ACL engine
     - lan966x: support mapping packet priority to internal switch
       priority (based on PCP or DSCP)
 
  - Ethernet PHYs:
    - Broadcom PHYs:
      - support for Wake-on-LAN for BCM54210E/B50212E
      - report LPI counter
    - Microsemi PHYs: support RGMII delay configuration (VSC85xx)
    - Micrel PHYs: receive timestamp in the frame (LAN8841)
    - Realtek PHYs: support optional external PHY clock
    - Altera TSE PCS: merge the driver into Lynx PCS which it is
      a variant of
 
  - CAN: Kvaser PCIEcan:
    - support packet timestamping
 
  - WiFi:
    - Intel (iwlwifi):
      - major update for new firmware and Multi-Link Operation (MLO)
      - configuration rework to drop test devices and split
        the different families
      - support for segmented PNVM images and power tables
      - new vendor entries for PPAG (platform antenna gain) feature
    - Qualcomm 802.11ax (ath11k):
      - Multiple Basic Service Set Identifier (MBSSID) and
        Enhanced MBSSID Advertisement (EMA) support in AP mode
      - support factory test mode
    - RealTek (rtw89):
      - add RSSI based antenna diversity
      - support U-NII-4 channels on 5 GHz band
    - RealTek (rtl8xxxu):
      - AP mode support for 8188f
      - support USB RX aggregation for the newer chips
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Jakub Kicinski:
 "WiFi 7 and sendpage changes are the biggest pieces of work for this
  release. The latter will definitely require fixes but I think that we
  got it to a reasonable point.

  Core:

   - Rework the sendpage & splice implementations

     Instead of feeding data into sockets page by page extend sendmsg
     handlers to support taking a reference on the data, controlled by a
     new flag called MSG_SPLICE_PAGES

     Rework the handling of unexpected-end-of-file to invoke an
     additional callback instead of trying to predict what the right
     combination of MORE/NOTLAST flags is

     Remove the MSG_SENDPAGE_NOTLAST flag completely

   - Implement SCM_PIDFD, a new type of CMSG type analogous to
     SCM_CREDENTIALS, but it contains pidfd instead of plain pid

   - Enable socket busy polling with CONFIG_RT

   - Improve reliability and efficiency of reporting for ref_tracker

   - Auto-generate a user space C library for various Netlink families

  Protocols:

   - Allow TCP to shrink the advertised window when necessary, prevent
     sk_rcvbuf auto-tuning from growing the window all the way up to
     tcp_rmem[2]

   - Use per-VMA locking for "page-flipping" TCP receive zerocopy

   - Prepare TCP for device-to-device data transfers, by making sure
     that payloads are always attached to skbs as page frags

   - Make the backoff time for the first N TCP SYN retransmissions
     linear. Exponential backoff is unnecessarily conservative

   - Create a new MPTCP getsockopt to retrieve all info
     (MPTCP_FULL_INFO)

   - Avoid waking up applications using TLS sockets until we have a full
     record

   - Allow using kernel memory for protocol ioctl callbacks, paving the
     way to issuing ioctls over io_uring

   - Add nolocalbypass option to VxLAN, forcing packets to be fully
     encapsulated even if they are destined for a local IP address

   - Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
     in-kernel ECMP implementation (e.g. Open vSwitch) select the same
     link for all packets. Support L4 symmetric hashing in Open vSwitch

   - PPPoE: make number of hash bits configurable

   - Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
     (ipconfig)

   - Add layer 2 miss indication and filtering, allowing higher layers
     (e.g. ACL filters) to make forwarding decisions based on whether
     packet matched forwarding state in lower devices (bridge)

   - Support matching on Connectivity Fault Management (CFM) packets

   - Hide the "link becomes ready" IPv6 messages by demoting their
     printk level to debug

   - HSR: don't enable promiscuous mode if device offloads the proto

   - Support active scanning in IEEE 802.15.4

   - Continue work on Multi-Link Operation for WiFi 7

  BPF:

   - Add precision propagation for subprogs and callbacks. This allows
     maintaining verification efficiency when subprograms are used, or
     in fact passing the verifier at all for complex programs,
     especially those using open-coded iterators

   - Improve BPF's {g,s}setsockopt() length handling. Previously BPF
     assumed the length is always equal to the amount of written data.
     But some protos allow passing a NULL buffer to discover what the
     output buffer *should* be, without writing anything

   - Accept dynptr memory as memory arguments passed to helpers

   - Add routing table ID to bpf_fib_lookup BPF helper

   - Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands

   - Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
     maps as read-only)

   - Show target_{obj,btf}_id in tracing link fdinfo

   - Addition of several new kfuncs (most of the names are
     self-explanatory):
      - Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
        bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
        and bpf_dynptr_clone().
      - bpf_task_under_cgroup()
      - bpf_sock_destroy() - force closing sockets
      - bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs

  Netfilter:

   - Relax set/map validation checks in nf_tables. Allow checking
     presence of an entry in a map without using the value

   - Increase ip_vs_conn_tab_bits range for 64BIT builds

   - Allow updating size of a set

   - Improve NAT tuple selection when connection is closing

  Driver API:

   - Integrate netdev with LED subsystem, to allow configuring HW
     "offloaded" blinking of LEDs based on link state and activity
     (i.e. packets coming in and out)

   - Support configuring rate selection pins of SFP modules

   - Factor Clause 73 auto-negotiation code out of the drivers, provide
     common helper routines

   - Add more fool-proof helpers for managing lifetime of MDIO devices
     associated with the PCS layer

   - Allow drivers to report advanced statistics related to Time Aware
     scheduler offload (taprio)

   - Allow opting out of VF statistics in link dump, to allow more VFs
     to fit into the message

   - Split devlink instance and devlink port operations

  New hardware / drivers:

   - Ethernet:
      - Synopsys EMAC4 IP support (stmmac)
      - Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
      - Marvell 88E6250 7 port switches
      - Microchip LAN8650/1 Rev.B0 PHYs
      - MediaTek MT7981/MT7988 built-in 1GE PHY driver

   - WiFi:
      - Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
      - Realtek RTL8723DS (SDIO variant)
      - Realtek RTL8851BE

   - CAN:
      - Fintek F81604

  Drivers:

   - Ethernet NICs:
      - Intel (100G, ice):
         - support dynamic interrupt allocation
         - use meta data match instead of VF MAC addr on slow-path
      - nVidia/Mellanox:
         - extend link aggregation to handle 4, rather than just 2 ports
         - spawn sub-functions without any features by default
      - OcteonTX2:
         - support HTB (Tx scheduling/QoS) offload
         - make RSS hash generation configurable
         - support selecting Rx queue using TC filters
      - Wangxun (ngbe/txgbe):
         - add basic Tx/Rx packet offloads
         - add phylink support (SFP/PCS control)
      - Freescale/NXP (enetc):
         - report TAPRIO packet statistics
      - Solarflare/AMD:
         - support matching on IP ToS and UDP source port of outer
           header
         - VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
         - add devlink dev info support for EF10

   - Virtual NICs:
      - Microsoft vNIC:
         - size the Rx indirection table based on requested
           configuration
         - support VLAN tagging
      - Amazon vNIC:
         - try to reuse Rx buffers if not fully consumed, useful for ARM
           servers running with 16kB pages
      - Google vNIC:
         - support TCP segmentation of >64kB frames

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - enable USXGMII (88E6191X)
      - Microchip:
         - lan966x: add support for Egress Stage 0 ACL engine
         - lan966x: support mapping packet priority to internal switch
           priority (based on PCP or DSCP)

   - Ethernet PHYs:
      - Broadcom PHYs:
         - support for Wake-on-LAN for BCM54210E/B50212E
         - report LPI counter
      - Microsemi PHYs: support RGMII delay configuration (VSC85xx)
      - Micrel PHYs: receive timestamp in the frame (LAN8841)
      - Realtek PHYs: support optional external PHY clock
      - Altera TSE PCS: merge the driver into Lynx PCS which it is a
        variant of

   - CAN: Kvaser PCIEcan:
      - support packet timestamping

   - WiFi:
      - Intel (iwlwifi):
         - major update for new firmware and Multi-Link Operation (MLO)
         - configuration rework to drop test devices and split the
           different families
         - support for segmented PNVM images and power tables
         - new vendor entries for PPAG (platform antenna gain) feature
      - Qualcomm 802.11ax (ath11k):
         - Multiple Basic Service Set Identifier (MBSSID) and Enhanced
           MBSSID Advertisement (EMA) support in AP mode
         - support factory test mode
      - RealTek (rtw89):
         - add RSSI based antenna diversity
         - support U-NII-4 channels on 5 GHz band
      - RealTek (rtl8xxxu):
         - AP mode support for 8188f
         - support USB RX aggregation for the newer chips"

* tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1602 commits)
  net: scm: introduce and use scm_recv_unix helper
  af_unix: Skip SCM_PIDFD if scm->pid is NULL.
  net: lan743x: Simplify comparison
  netlink: Add __sock_i_ino() for __netlink_diag_dump().
  net: dsa: avoid suspicious RCU usage for synced VLAN-aware MAC addresses
  Revert "af_unix: Call scm_recv() only after scm_set_cred()."
  phylink: ReST-ify the phylink_pcs_neg_mode() kdoc
  libceph: Partially revert changes to support MSG_SPLICE_PAGES
  net: phy: mscc: fix packet loss due to RGMII delays
  net: mana: use vmalloc_array and vcalloc
  net: enetc: use vmalloc_array and vcalloc
  ionic: use vmalloc_array and vcalloc
  pds_core: use vmalloc_array and vcalloc
  gve: use vmalloc_array and vcalloc
  octeon_ep: use vmalloc_array and vcalloc
  net: usb: qmi_wwan: add u-blox 0x1312 composition
  perf trace: fix MSG_SPLICE_PAGES build error
  ipvlan: Fix return value of ipvlan_queue_xmit()
  netfilter: nf_tables: fix underflow in chain reference counter
  netfilter: nf_tables: unbind non-anonymous set if rule construction fails
  ...
 2023-06-28 16:43:10 -07:00
Linus Torvalds
6a8cbd9253 v6.5-rc1-sysctl-next 
The changes queued up for v6.5-rc1 for sysctl are in line with
 prior efforts to stop usage of deprecated routines which incur
 recursion and also make it hard to remove the empty array element
 in each sysctl array declaration. The most difficult user to modify
 was parport which required a bit of re-thinking of how to declare shared
 sysctls there, Joel Granados has stepped up to the plate to do most of
 this work and eventual removal of register_sysctl_table(). That work
 ended up saving us about 1465 bytes according to bloat-o-meter. Since
 we gained a few bloat-o-meter karma points I moved two rather small
 sysctl arrays from kernel/sysctl.c leaving us only two more sysctl
 arrays to move left.
 
 Most changes have been tested on linux-next for about a month. The last
 straggler patches are a minor parport fix, changes to the sysctl
 kernel selftest so to verify correctness and prevent regressions for
 the future change he made to provide an alternative solution for the
 special sysctl mount point target which was using the now deprecated
 sysctl child element.
 
 This is all prep work to now finally be able to remove the empty
 array element in all sysctl declarations / registrations which is
 expected to save us a bit of bytes all over the kernel. That work
 will be tested early after v6.5-rc1 is out.
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Merge tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull sysctl updates from Luis Chamberlain:
 "The changes for sysctl are in line with prior efforts to stop usage of
  deprecated routines which incur recursion and also make it hard to
  remove the empty array element in each sysctl array declaration.

  The most difficult user to modify was parport which required a bit of
  re-thinking of how to declare shared sysctls there, Joel Granados has
  stepped up to the plate to do most of this work and eventual removal
  of register_sysctl_table(). That work ended up saving us about 1465
  bytes according to bloat-o-meter. Since we gained a few bloat-o-meter
  karma points I moved two rather small sysctl arrays from
  kernel/sysctl.c leaving us only two more sysctl arrays to move left.

  Most changes have been tested on linux-next for about a month. The
  last straggler patches are a minor parport fix, changes to the sysctl
  kernel selftest so to verify correctness and prevent regressions for
  the future change he made to provide an alternative solution for the
  special sysctl mount point target which was using the now deprecated
  sysctl child element.

  This is all prep work to now finally be able to remove the empty array
  element in all sysctl declarations / registrations which is expected
  to save us a bit of bytes all over the kernel. That work will be
  tested early after v6.5-rc1 is out"

* tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  sysctl: replace child with an enumeration
  sysctl: Remove debugging dump_stack
  test_sysclt: Test for registering a mount point
  test_sysctl: Add an option to prevent test skip
  test_sysctl: Add an unregister sysctl test
  test_sysctl: Group node sysctl test under one func
  test_sysctl: Fix test metadata getters
  parport: plug a sysctl register leak
  sysctl: move security keys sysctl registration to its own file
  sysctl: move umh sysctl registration to its own file
  signal: move show_unhandled_signals sysctl to its own file
  sysctl: remove empty dev table
  sysctl: Remove register_sysctl_table
  sysctl: Refactor base paths registrations
  sysctl: stop exporting register_sysctl_table
  parport: Removed sysctl related defines
  parport: Remove register_sysctl_table from parport_default_proc_register
  parport: Remove register_sysctl_table from parport_device_proc_register
  parport: Remove register_sysctl_table from parport_proc_register
  parport: Move magic number "15" to a define
 2023-06-28 16:05:21 -07:00
Linus Torvalds
4e3c09e954 v6.5-rc1-modules-next 
The changes queued up for v6.5-rc1 for modules are pretty tame, mostly
 code removal of moving of code. Only two minor functional changes are
 made, the only one which stands out is Sebastian Andrzej Siewior's
 simplification of module reference counting by removing preempt_disable()
 and that has been tested on linux-next for well over a month without
 no regressions. I'm now, I guess, also a kitchen sink for some kallsyms
 changes.
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Merge tag 'v6.5-rc1-modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull module updates from Luis Chamberlain:
 "The changes queued up for modules are pretty tame, mostly code removal
  of moving of code.

  Only two minor functional changes are made, the only one which stands
  out is Sebastian Andrzej Siewior's simplification of module reference
  counting by removing preempt_disable() and that has been tested on
  linux-next for well over a month without no regressions.

  I'm now, I guess, also a kitchen sink for some kallsyms changes"

[ There was a mis-communication about the concurrent module load changes
  that I had expected to come through Luis despite me authoring the
  patch. So some of the module updates were left hanging in the email
  ether, and I just committed them separately.

  It's my bad - I should have made it more clear that I expected my
  own patches to come through the module tree too. Now they missed
  linux-next, but hopefully that won't cause any issues    - Linus ]

* tag 'v6.5-rc1-modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  kallsyms: make kallsyms_show_value() as generic function
  kallsyms: move kallsyms_show_value() out of kallsyms.c
  kallsyms: remove unsed API lookup_symbol_attrs
  kallsyms: remove unused arch_get_kallsym() helper
  module: Remove preempt_disable() from module reference counting.
 2023-06-28 15:51:08 -07:00
Linus Torvalds
9b9879fc03 modules: catch concurrent module loads, treat them as idempotent 
This is the new-and-improved attempt at avoiding huge memory load spikes
when the user space boot sequence tries to load hundreds (or even
thousands) of redundant duplicate modules in parallel.

See commit 9828ed3f69 ("module: error out early on concurrent load of
the same module file") for background and an earlier failed attempt that
was reverted.

That earlier attempt just said "concurrently loading the same module is
silly, just open the module file exclusively and return -ETXTBSY if
somebody else is already loading it".

While it is true that concurrent module loads of the same module is
silly, the reason that earlier attempt then failed was that the
concurrently loaded module would often be a prerequisite for another
module.

Thus failing to load the prerequisite would then cause cascading
failures of the other modules, rather than just short-circuiting that
one unnecessary module load.

At the same time, we still really don't want to load the contents of the
same module file hundreds of times, only to then wait for an eventually
successful load, and have everybody else return -EEXIST.

As a result, this takes another approach, and treats concurrent module
loads from the same file as "idempotent" in the inode.  So if one module
load is ongoing, we don't start a new one, but instead just wait for the
first one to complete and return the same return value as it did.

So unlike the first attempt, this does not return early: the intent is
not to speed up the boot, but to avoid a thundering herd problem in
allocating memory (both physical and virtual) for a module more than
once.

Also note that this does change behavior: it used to be that when you
had concurrent loads, you'd have one "winner" that would return success,
and everybody else would return -EEXIST.

In contrast, this idempotent logic goes all Oprah on the problem, and
says "You are a winner! And you are a winner! We are ALL winners".  But
since there's no possible actual real semantic difference between "you
loaded the module" and "somebody else already loaded the module", this
is more of a feel-good change than an actual honest-to-goodness semantic
change.

Of course, any true Johnny-come-latelies that don't get caught in the
concurrency filter will still return -EEXIST.  It's no different from
not even getting a seat at an Oprah taping.  That's life.

See the long thread on the kernel mailing list about this all, which
includes some numbers for memory use before and after the patch.

Link: https://lore.kernel.org/lkml/20230524213620.3509138-1-mcgrof@kernel.org/
Reviewed-by: Johan Hovold <johan@kernel.org>
Tested-by: Johan Hovold <johan@kernel.org>
Tested-by: Luis Chamberlain <mcgrof@kernel.org>
Tested-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Rudi Heitbaum <rudi@heitbaum..com>
Tested-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2023-06-28 15:46:44 -07:00
Linus Torvalds
054a73009c module: split up 'finit_module()' into init_module_from_file() helper 
This will simplify the next step, where we can then key off the inode to
do one idempotent module load.

Let's do the obvious re-organization in one step, and then the new code
in another.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2023-06-28 15:46:43 -07:00
Linus Torvalds
89181f544f MMC core: 
- Allow synchronous detection of (e)MMC/SD/SDIO cards
  - Fixup error check for ioctls for SPI hosts
  - Disable broken SD-Cache support for Kingston Canvas Go Plus from 11/2019
  - Disable broken eMMC-Trim support for Kingston EMMC04G-M627
  - Disable broken eMMC-Trim support for Micron MTFC4GACAJCN-1M
 
 MMC host:
  - bcm2835: Convert DT bindings to YAML
  - mmci: Enable asynchronous probe
  - mmci: Transform the ux500 HW-busy detection into a proper state machine
  - mmci: Add support for SW busy-end timeouts for the ux500 variants
  - mmci_stm32: Add support for sdm32 variant revision v3.0 used on STM32MP25
  - mmci_stm32: Improve the tuning sequence
  - mtk-sd: Tune polling-period to improve performance
  - sdhci: Fixup DMA configuration for 64-bit DMA mode
  - sdhci-bcm-kona: Convert DT bindings to YAML
  - sdhci-msm: Switch to use the new ICE API
  - sdhci-msm: Add support for the SC8280XP/IPQ6018/QDU1000/QRU1000 variants
  - sdhci-pci-gli: Add support SD Express cards for GL9767
  - sdhci-pci-gli: Add support for the Genesys Logic GL9767 variant
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Merge tag 'mmc-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Allow synchronous detection of (e)MMC/SD/SDIO cards
   - Fixup error check for ioctls for SPI hosts
   - Disable broken SD-Cache support for Kingston Canvas Go Plus from 2019
   - Disable broken eMMC-Trim support for Kingston EMMC04G-M627
   - Disable broken eMMC-Trim support for Micron MTFC4GACAJCN-1M

  MMC host:
   - bcm2835: Convert DT bindings to YAML
   - mmci:
      - Enable asynchronous probe
      - Transform the ux500 HW-busy detection into a proper state machine
      - Add support for SW busy-end timeouts for the ux500 variants
   - mmci_stm32:
      - Add support for sdm32 variant revision v3.0 used on STM32MP25
      - Improve the tuning sequence
   - mtk-sd: Tune polling-period to improve performance
   - sdhci: Fixup DMA configuration for 64-bit DMA mode
   - sdhci-bcm-kona: Convert DT bindings to YAML
   - sdhci-msm:
      - Switch to use the new ICE API
      - Add support for the SC8280XP/IPQ6018/QDU1000/QRU1000 variants
   - sdhci-pci-gli:
      - Add support SD Express cards for GL9767
      - Add support for the Genesys Logic GL9767 variant"

* tag 'mmc-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (42 commits)
  dt-bindings: mmc: fsl-imx-esdhc: Add imx6ul support
  mmc: mmci: Add support for SW busy-end timeouts
  mmc: Add MMC_QUIRK_BROKEN_SD_CACHE for Kingston Canvas Go Plus from 11/2019
  mmc: core: disable TRIM on Kingston EMMC04G-M627
  mmc: mmci: stm32: add delay block support for STM32MP25
  mmc: mmci: stm32: prepare other delay block support
  mmc: mmci: stm32: manage block gap hardware flow control
  mmc: mmci: Add support for sdmmc variant revision v3.0
  mmc: mmci: add stm32_idmabsize_align parameter
  dt-bindings: mmc: mmci: Add st,stm32mp25-sdmmc2 compatible
  mmc: core: disable TRIM on Micron MTFC4GACAJCN-1M
  mmc: mmci: Break out a helper function
  mmc: mmci: Use a switch statement machine
  mmc: mmci: Use state machine state as exit condition
  mmc: mmci: Retry the busy start condition
  mmc: mmci: Make busy complete state machine explicit
  mmc: mmci: Break out error check in busy detect
  mmc: mmci: Stash status while waiting for busy
  mmc: mmci: Unwind big if() clause
  mmc: mmci: Clear busy_status when starting command
  ...
 2023-06-28 14:06:39 -07:00
Linus Torvalds
1364b4068a Core MTD changes: 
* otp:
   - Put factory OTP/NVRAM into the entropy pool
   - Clean up on error in mtd_otp_nvmem_add()
 
 MTD devices changes:
 * sm_ftl: Fix typos in comments
 * Use SPDX license headers
 * pismo: Switch back to use i2c_driver's .probe()
 * mtdpart: Drop useless LIST_HEAD
 * st_spi_fsm: Use the devm_clk_get_enabled() helper function
 
 DT binding changes:
 * partitions:
   - Include TP-Link SafeLoader in allowed list
   - Add missing type for "linux,rootfs"
 * Extend the nand node names filter
 * Create a file for raw NAND chip properties
 * Mark nand-ecc-placement deprecated
 * Describe nand-ecc-mode
 * Prevent NAND chip unevaluated properties in all NAND bindings with a NAND chip
   reference.
 * Qcom: Fix a property position
 * Marvell: Convert to YAML DT schema
 
 Raw NAND chip drivers changes:
 * Macronix: OTP access for MX30LFxG18AC
 * Add basic Sandisk manufacturer ops
 * Add support for Sandisk SDTNQGAMA
 
 Raw NAND controller driver changes:
 * Meson:
   - Replace integer consts with proper defines
   - Allow waiting w/o wired ready/busy pin
   - Check buffer length validity
   - Fix unaligned DMA buffers handling
   - dt-bindings: Fix 'nand-rb' property
 * Arasan: Revert "mtd: rawnand: arasan: Prevent an unsupported configuration"
   as this limitation is no longer true thanks to the recent efforts in improving
   the clocks support in this driver
 
 SPI-NAND changes:
 * Gigadevice: add support for GD5F2GQ5xExxH
 * Macronix: Add support for serial NAND flashes
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Merge tag 'mtd/for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull mtd updates from
 "Core MTD changes:
   - otp:
      - Put factory OTP/NVRAM into the entropy pool
      - Clean up on error in mtd_otp_nvmem_add()

  MTD devices changes:
   - sm_ftl: Fix typos in comments
   - Use SPDX license headers
   - pismo: Switch back to use i2c_driver's .probe()
   - mtdpart: Drop useless LIST_HEAD
   - st_spi_fsm: Use the devm_clk_get_enabled() helper function

  DT binding changes:
   - partitions:
      - Include TP-Link SafeLoader in allowed list
      - Add missing type for "linux,rootfs"
   - Extend the nand node names filter
   - Create a file for raw NAND chip properties
   - Mark nand-ecc-placement deprecated
   - Describe nand-ecc-mode
   - Prevent NAND chip unevaluated properties in all NAND bindings with
     a NAND chip reference.
   - Qcom: Fix a property position
   - Marvell: Convert to YAML DT schema

  Raw NAND chip drivers changes:
   - Macronix: OTP access for MX30LFxG18AC
   - Add basic Sandisk manufacturer ops
   - Add support for Sandisk SDTNQGAMA

  Raw NAND controller driver changes:
   - Meson:
      - Replace integer consts with proper defines
      - Allow waiting w/o wired ready/busy pin
      - Check buffer length validity
      - Fix unaligned DMA buffers handling
      - dt-bindings: Fix 'nand-rb' property
   - Arasan: Revert "mtd: rawnand: arasan: Prevent an unsupported
     configuration" as this limitation is no longer true thanks to the
     recent efforts in improving the clocks support in this driver

  SPI-NAND changes:
   - Gigadevice: add support for GD5F2GQ5xExxH
   - Macronix: Add support for serial NAND flashes"

* tag 'mtd/for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (38 commits)
  dt-bindings: mtd: marvell-nand: Convert to YAML DT scheme
  dt-bindings: mtd: ti,am654: Prevent unevaluated properties
  dt-bindings: mtd: mediatek: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: mediatek: Reference raw-nand-chip.yaml
  dt-bindings: mtd: stm32: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: rockchip: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: intel: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: denali: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: brcmnand: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: meson: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: sunxi: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: ingenic: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: qcom: Prevent NAND chip unevaluated properties
  dt-bindings: mtd: qcom: Fix a property position
  dt-bindings: mtd: Describe nand-ecc-mode
  dt-bindings: mtd: Mark nand-ecc-placement deprecated
  dt-bindings: mtd: Create a file for raw NAND chip properties
  dt-bindings: mtd: Accept nand related node names
  mtd: sm_ftl: Fix typos in comments
  mtd: otp: clean up on error in mtd_otp_nvmem_add()
  ...
 2023-06-28 14:02:03 -07:00
Linus Torvalds
84fccbba93 spi: Updates for v6.5 
One small core feature this time around but mostly driver improvements
 and additions for SPI:
 
  - Add support for controlling the idle state of MOSI, some systems can
    support this and depending on the system integration may need it to
    avoid glitching in some situations.
  - Support for polling mode in the S3C64xx driver and DMA on the
    Qualcomm QSPI driver.
  - Support for several Allwinner SoCs, AMD Pensando Elba, Intel Mount
    Evans, Renesas RZ/V2M, and ST STM32H7.
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Merge tag 'spi-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "One small core feature this time around but mostly driver improvements
  and additions for SPI:

   - Add support for controlling the idle state of MOSI, some systems
     can support this and depending on the system integration may need
     it to avoid glitching in some situations

   - Support for polling mode in the S3C64xx driver and DMA on the
     Qualcomm QSPI driver

   - Support for several Allwinner SoCs, AMD Pensando Elba, Intel Mount
     Evans, Renesas RZ/V2M, and ST STM32H7"

* tag 'spi-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (66 commits)
  spi: dt-bindings: atmel,at91rm9200-spi: fix broken sam9x7 compatible
  spi: dt-bindings: atmel,at91rm9200-spi: add sam9x7 compatible
  spi: Add support for Renesas CSI
  spi: dt-bindings: Add bindings for RZ/V2M CSI
  spi: sun6i: Use the new helper to derive the xfer timeout value
  spi: atmel: Prevent false timeouts on long transfers
  spi: dt-bindings: stm32: do not disable spi-slave property for stm32f4-f7
  spi: Create a helper to derive adaptive timeouts
  spi: spi-geni-qcom: correctly handle -EPROBE_DEFER from dma_request_chan()
  spi: stm32: disable spi-slave property for stm32f4-f7
  spi: stm32: introduction of stm32h7 SPI device mode support
  spi: stm32: use dmaengine_terminate_{a}sync instead of _all
  spi: stm32: renaming of spi_master into spi_controller
  spi: dw: Remove misleading comment for Mount Evans SoC
  spi: dt-bindings: snps,dw-apb-ssi: Add compatible for Intel Mount Evans SoC
  spi: dw: Add compatible for Intel Mount Evans SoC
  spi: s3c64xx: Use dev_err_probe()
  spi: s3c64xx: Use the managed spi master allocation function
  spi: spl022: Probe defer is no error
  spi: spi-imx: fix mixing of native and gpio chipselects for imx51/imx53/imx6 variants
  ...
 2023-06-28 13:48:42 -07:00
Linus Torvalds
362067b6d5 regulator: Updates for v6.5 
This release is almost all drivers, there's some small improvements in
 the core but otherwise everything is updates to drivers, mostly the
 addition of new ones.
 
 There's also a bunch of changes pulled in from the MFD subsystem as
 dependencies, Rockchip and TI core MFD code that the regulator drivers
 depend on.
 
 I've also yet again managed to put a SPI commit in the regulator tree, I
 don't know what it is about those two trees (this for spi-geni-qcom).
 
  - Support for Renesas RAA215300, Rockchip RK808, Texas Instruments
    TPS6594 and TPS6287x, and X-Powers AXP15060 and AXP313a
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Merge tag 'regulator-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "This release is almost all drivers, there's some small improvements in
  the core but otherwise everything is updates to drivers, mostly the
  addition of new ones.

  There's also a bunch of changes pulled in from the MFD subsystem as
  dependencies, Rockchip and TI core MFD code that the regulator drivers
  depend on.

  I've also yet again managed to put a SPI commit in the regulator tree,
  I don't know what it is about those two trees (this for
  spi-geni-qcom).

  Summary:

   - Support for Renesas RAA215300, Rockchip RK808, Texas Instruments
     TPS6594 and TPS6287x, and X-Powers AXP15060 and AXP313a"

* tag 'regulator-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (43 commits)
  regulator: Add Renesas PMIC RAA215300 driver
  regulator: dt-bindings: Add Renesas RAA215300 PMIC bindings
  regulator: ltc3676: Use maple tree register cache
  regulator: ltc3589: Use maple tree register cache
  regulator: helper: Document ramp_delay parameter of regulator_set_ramp_delay_regmap()
  regulator: mt6358: Use linear voltage helpers for single range regulators
  regulator: mt6358: Const-ify mt6358_regulator_info data structures
  regulator: mt6358: Drop *_SSHUB regulators
  regulator: mt6358: Merge VCN33_* regulators
  regulator: dt-bindings: mt6358: Drop *_sshub regulators
  regulator: dt-bindings: mt6358: Merge ldo_vcn33_* regulators
  regulator: dt-bindings: pwm-regulator: Add missing type for "pwm-dutycycle-unit"
  regulator: Switch two more i2c drivers back to use .probe()
  spi: spi-geni-qcom: Do not do DMA map/unmap inside driver, use framework instead
  soc: qcom: geni-se: Add interfaces geni_se_tx_init_dma() and geni_se_rx_init_dma()
  regulator: tps6594-regulator: Add driver for TI TPS6594 regulators
  regulator: axp20x: Add AXP15060 support
  regulator: axp20x: Add support for AXP313a variant
  dt-bindings: pfuze100.yaml: Add an entry for interrupts
  regulator: stm32-pwr: Fix regulator disabling
  ...
 2023-06-28 13:32:47 -07:00
Linus Torvalds
4171a9aa23 regmap: Updates for v6.5 
Another busy release for regmap with the second half fo the maple tree
 register cache implementation, there's some smaller optimisations that
 could be done but this should now be able to replace the rbtree cache
 for most devices.
 
 We also had a followup from Aidan MacDonald's refactoring of some of the
 regmap-irq interfaces, the conversion is complete so the old interfaces
 are removed.  This means that even with the new features for the maple
 tree cache we'd have a nice negative diffstat were it not for the
 addition of a bunch more KUnit coverage.
 
 There's one GPIO patch in here, it was a dependency for a cleanup of an
 API in the regmap-irq code for which the gpio-104-dio-48e driver was the
 only user.
 
 Highlights:
 
  - The maple tree cache can now load in default values more efficiently,
    and is capabale of syncing multiple registers in a single write
    during cache sync.
  - More KUnit coverage, including some coverage for raw I/O and a dummy
    RAM backed cache to support it.
  - Removal of several old interfaces in regmap-irq now all the users
    have been modernised.
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Merge tag 'regmap-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "Another busy release for regmap with the second half of the maple tree
  register cache implementation, there's some smaller optimisations that
  could be done but this should now be able to replace the rbtree cache
  for most devices.

  We also had a followup from Aidan MacDonald's refactoring of some of
  the regmap-irq interfaces, the conversion is complete so the old
  interfaces are removed. This means that even with the new features for
  the maple tree cache we'd have a nice negative diffstat were it not
  for the addition of a bunch more KUnit coverage.

  There's one GPIO patch in here, it was a dependency for a cleanup of
  an API in the regmap-irq code for which the gpio-104-dio-48e driver
  was the only user.

  Highlights:

   - The maple tree cache can now load in default values more
     efficiently, and is capabale of syncing multiple registers
     in a single write during cache sync

   - More KUnit coverage, including some coverage for raw I/O
     and a dummy RAM backed cache to support it

   - Removal of several old interfaces in regmap-irq now all
     users have been modernised"

* tag 'regmap-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: (23 commits)
  regmap: Allow reads from write only registers with the flat cache
  regmap: Drop early readability check
  regmap: Check for register readability before checking cache during read
  regmap: Add test to make sure we don't sync to read only registers
  regmap: Add a test case for write only registers
  regmap: Add test that writes to write only registers are prevented
  regmap: Add debugfs file for forcing field writes
  regmap: Don't check for changes in regcache_set_val()
  regmap: maple: Implement block sync for the maple tree cache
  regmap: Provide basic KUnit coverage for the raw register I/O
  regmap: Provide a ram backed regmap with raw support
  regmap: Add missing cache_only checks
  regmap: regmap-irq: Move handle_post_irq to before pm_runtime_put
  regmap: Load register defaults in blocks rather than register by register
  regmap: mmio: Allow passing an empty config->reg_stride
  regmap-irq: Drop backward compatibility for inverted mask/unmask
  regmap-irq: Minor adjustments to .handle_mask_sync()
  regmap-irq: Remove support for not_fixed_stride
  regmap-irq: Remove type registers
  regmap-irq: Remove virtual registers
  ...
 2023-06-28 13:26:19 -07:00
Dave Airlie
5ff2977b19 Merge tag 'drm-intel-next-fixes-2023-06-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 
One fix for incorrect error handling in the frame buffer mmap callback,
HuC init error handling fix, missing wakeref during GSC init and a build
fix when !CONFIG_PROC_FS.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZJLI8ON96ApPTl8H@tursulin-desk
 2023-06-29 06:25:26 +10:00
Linus Torvalds
1b2c92a1cb x86/mem_encrypt: Remove stale mem_encrypt_init() declaration 
The memory encryption initialization logic was moved from init/main.c
into arch_cpu_finalize_init() in commit 439e17576e ("init, x86: Move
mem_encrypt_init() into arch_cpu_finalize_init()"), but a stale
declaration for the init function was left in <linux/init.h>.

And didn't cause any problems if you had X86_MEM_ENCRYPT enabled, which
apparently everybody involved did have.  See also commit 0a9567ac5e
("x86/mem_encrypt: Unbreak the AMD_MEM_ENCRYPT=n build") in this whole
sad saga of conflicting declarations for different situations.

Reported-by: Matthew Wilcox <willy@infradead.org>
Fixes: 439e17576e init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init()
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2023-06-28 12:47:30 -07:00
Linus Torvalds
6581ccf03e mm: fix __access_remote_vm() GUP failure case 
Commit ca5e863233 ("mm/gup: remove vmas parameter from
get_user_pages_remote()") removed the vma argument from GUP handling,
and instead added a helper function (get_user_page_vma_remote()) that
looks it up separately using 'vma_lookup()'.  And then converted
existing users that needed a vma to use the helper instead.

However, the helper function intentionally acts exactly like the old
get_user_pages_remote() did, and only fills in 'vma' on successful page
lookup.  Fine so far.

However, __access_remote_vm() wants the vma even for the unsuccessful
case, and used to do a

	vma = vma_lookup(mm, addr);

explicitly to look it up when the get_user_page() failed.

However, that conversion commit incorrectly removed that vma lookup,
thinking that get_user_page_vma_remote() would have done it.  Not so.

So add the vma_lookup() back in.

Fixes: ca5e863233 ("mm/gup: remove vmas parameter from get_user_pages_remote()")
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2023-06-28 12:20:24 -07:00
Linus Torvalds
77b1a7f7a0 - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in 
top-level directories.
 
 - Douglas Anderson has added a new "buddy" mode to the hardlockup
   detector.  It permits the detector to work on architectures which
   cannot provide the required interrupts, by having CPUs periodically
   perform checks on other CPUs.
 
 - Zhen Lei has enhanced kexec's ability to support two crash regions.
 
 - Petr Mladek has done a lot of cleanup on the hard lockup detector's
   Kconfig entries.
 
 - And the usual bunch of singleton patches in various places.
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Merge tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-mm updates from Andrew Morton:

 - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in top-level
   directories

 - Douglas Anderson has added a new "buddy" mode to the hardlockup
   detector. It permits the detector to work on architectures which
   cannot provide the required interrupts, by having CPUs periodically
   perform checks on other CPUs

 - Zhen Lei has enhanced kexec's ability to support two crash regions

 - Petr Mladek has done a lot of cleanup on the hard lockup detector's
   Kconfig entries

 - And the usual bunch of singleton patches in various places

* tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (72 commits)
  kernel/time/posix-stubs.c: remove duplicated include
  ocfs2: remove redundant assignment to variable bit_off
  watchdog/hardlockup: fix typo in config HARDLOCKUP_DETECTOR_PREFER_BUDDY
  powerpc: move arch_trigger_cpumask_backtrace from nmi.h to irq.h
  devres: show which resource was invalid in __devm_ioremap_resource()
  watchdog/hardlockup: define HARDLOCKUP_DETECTOR_ARCH
  watchdog/sparc64: define HARDLOCKUP_DETECTOR_SPARC64
  watchdog/hardlockup: make HAVE_NMI_WATCHDOG sparc64-specific
  watchdog/hardlockup: declare arch_touch_nmi_watchdog() only in linux/nmi.h
  watchdog/hardlockup: make the config checks more straightforward
  watchdog/hardlockup: sort hardlockup detector related config values a logical way
  watchdog/hardlockup: move SMP barriers from common code to buddy code
  watchdog/buddy: simplify the dependency for HARDLOCKUP_DETECTOR_PREFER_BUDDY
  watchdog/buddy: don't copy the cpumask in watchdog_next_cpu()
  watchdog/buddy: cleanup how watchdog_buddy_check_hardlockup() is called
  watchdog/hardlockup: remove softlockup comment in touch_nmi_watchdog()
  watchdog/hardlockup: in watchdog_hardlockup_check() use cpumask_copy()
  watchdog/hardlockup: don't use raw_cpu_ptr() in watchdog_hardlockup_kick()
  watchdog/hardlockup: HAVE_NMI_WATCHDOG must implement watchdog_hardlockup_probe()
  watchdog/hardlockup: keep kernel.nmi_watchdog sysctl as 0444 if probe fails
  ...
 2023-06-28 10:59:38 -07:00
Linus Torvalds
6e17c6de3d - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 
- Yosry has also eliminated cgroup's atomic rstat flushing.
 
 - Nhat Pham adds the new cachestat() syscall.  It provides userspace
   with the ability to query pagecache status - a similar concept to
   mincore() but more powerful and with improved usability.
 
 - Mel Gorman provides more optimizations for compaction, reducing the
   prevalence of page rescanning.
 
 - Lorenzo Stoakes has done some maintanance work on the get_user_pages()
   interface.
 
 - Liam Howlett continues with cleanups and maintenance work to the maple
   tree code.  Peng Zhang also does some work on maple tree.
 
 - Johannes Weiner has done some cleanup work on the compaction code.
 
 - David Hildenbrand has contributed additional selftests for
   get_user_pages().
 
 - Thomas Gleixner has contributed some maintenance and optimization work
   for the vmalloc code.
 
 - Baolin Wang has provided some compaction cleanups,
 
 - SeongJae Park continues maintenance work on the DAMON code.
 
 - Huang Ying has done some maintenance on the swap code's usage of
   device refcounting.
 
 - Christoph Hellwig has some cleanups for the filemap/directio code.
 
 - Ryan Roberts provides two patch series which yield some
   rationalization of the kernel's access to pte entries - use the provided
   APIs rather than open-coding accesses.
 
 - Lorenzo Stoakes has some fixes to the interaction between pagecache
   and directio access to file mappings.
 
 - John Hubbard has a series of fixes to the MM selftesting code.
 
 - ZhangPeng continues the folio conversion campaign.
 
 - Hugh Dickins has been working on the pagetable handling code, mainly
   with a view to reducing the load on the mmap_lock.
 
 - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from
   128 to 8.
 
 - Domenico Cerasuolo has improved the zswap reclaim mechanism by
   reorganizing the LRU management.
 
 - Matthew Wilcox provides some fixups to make gfs2 work better with the
   buffer_head code.
 
 - Vishal Moola also has done some folio conversion work.
 
 - Matthew Wilcox has removed the remnants of the pagevec code - their
   functionality is migrated over to struct folio_batch.
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Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull mm updates from Andrew Morton:

 - Yosry Ahmed brought back some cgroup v1 stats in OOM logs

 - Yosry has also eliminated cgroup's atomic rstat flushing

 - Nhat Pham adds the new cachestat() syscall. It provides userspace
   with the ability to query pagecache status - a similar concept to
   mincore() but more powerful and with improved usability

 - Mel Gorman provides more optimizations for compaction, reducing the
   prevalence of page rescanning

 - Lorenzo Stoakes has done some maintanance work on the
   get_user_pages() interface

 - Liam Howlett continues with cleanups and maintenance work to the
   maple tree code. Peng Zhang also does some work on maple tree

 - Johannes Weiner has done some cleanup work on the compaction code

 - David Hildenbrand has contributed additional selftests for
   get_user_pages()

 - Thomas Gleixner has contributed some maintenance and optimization
   work for the vmalloc code

 - Baolin Wang has provided some compaction cleanups,

 - SeongJae Park continues maintenance work on the DAMON code

 - Huang Ying has done some maintenance on the swap code's usage of
   device refcounting

 - Christoph Hellwig has some cleanups for the filemap/directio code

 - Ryan Roberts provides two patch series which yield some
   rationalization of the kernel's access to pte entries - use the
   provided APIs rather than open-coding accesses

 - Lorenzo Stoakes has some fixes to the interaction between pagecache
   and directio access to file mappings

 - John Hubbard has a series of fixes to the MM selftesting code

 - ZhangPeng continues the folio conversion campaign

 - Hugh Dickins has been working on the pagetable handling code, mainly
   with a view to reducing the load on the mmap_lock

 - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment
   from 128 to 8

 - Domenico Cerasuolo has improved the zswap reclaim mechanism by
   reorganizing the LRU management

 - Matthew Wilcox provides some fixups to make gfs2 work better with the
   buffer_head code

 - Vishal Moola also has done some folio conversion work

 - Matthew Wilcox has removed the remnants of the pagevec code - their
   functionality is migrated over to struct folio_batch

* tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits)
  mm/hugetlb: remove hugetlb_set_page_subpool()
  mm: nommu: correct the range of mmap_sem_read_lock in task_mem()
  hugetlb: revert use of page_cache_next_miss()
  Revert "page cache: fix page_cache_next/prev_miss off by one"
  mm/vmscan: fix root proactive reclaim unthrottling unbalanced node
  mm: memcg: rename and document global_reclaim()
  mm: kill [add|del]_page_to_lru_list()
  mm: compaction: convert to use a folio in isolate_migratepages_block()
  mm: zswap: fix double invalidate with exclusive loads
  mm: remove unnecessary pagevec includes
  mm: remove references to pagevec
  mm: rename invalidate_mapping_pagevec to mapping_try_invalidate
  mm: remove struct pagevec
  net: convert sunrpc from pagevec to folio_batch
  i915: convert i915_gpu_error to use a folio_batch
  pagevec: rename fbatch_count()
  mm: remove check_move_unevictable_pages()
  drm: convert drm_gem_put_pages() to use a folio_batch
  i915: convert shmem_sg_free_table() to use a folio_batch
  scatterlist: add sg_set_folio()
  ...
 2023-06-28 10:28:11 -07:00
Linus Torvalds
6aeadf7896 Move the arm64 architecture documentation under Documentation/arch/. This 
brings some order to the documentation directory, declutters the top-level
 directory, and makes the documentation organization more closely match that
 of the source.
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Merge tag 'docs-arm64-move' of git://git.lwn.net/linux

Pull arm64 documentation move from Jonathan Corbet:
 "Move the arm64 architecture documentation under Documentation/arch/.

  This brings some order to the documentation directory, declutters the
  top-level directory, and makes the documentation organization more
  closely match that of the source"

* tag 'docs-arm64-move' of git://git.lwn.net/linux:
  perf arm-spe: Fix a dangling Documentation/arm64 reference
  mm: Fix a dangling Documentation/arm64 reference
  arm64: Fix dangling references to Documentation/arm64
  dt-bindings: fix dangling Documentation/arm64 reference
  docs: arm64: Move arm64 documentation under Documentation/arch/
 2023-06-27 21:52:15 -07:00
Linus Torvalds
582c161cf3 hardening updates for v6.5-rc1 
- Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko)
 
 - Convert strreplace() to return string start (Andy Shevchenko)
 
 - Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook)
 
 - Add missing function prototypes seen with W=1 (Arnd Bergmann)
 
 - Fix strscpy() kerndoc typo (Arne Welzel)
 
 - Replace strlcpy() with strscpy() across many subsystems which were
   either Acked by respective maintainers or were trivial changes that
   went ignored for multiple weeks (Azeem Shaikh)
 
 - Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers)
 
 - Add KUnit tests for strcat()-family
 
 - Enable KUnit tests of FORTIFY wrappers under UML
 
 - Add more complete FORTIFY protections for strlcat()
 
 - Add missed disabling of FORTIFY for all arch purgatories.
 
 - Enable -fstrict-flex-arrays=3 globally
 
 - Tightening UBSAN_BOUNDS when using GCC
 
 - Improve checkpatch to check for strcpy, strncpy, and fake flex arrays
 
 - Improve use of const variables in FORTIFY
 
 - Add requested struct_size_t() helper for types not pointers
 
 - Add __counted_by macro for annotating flexible array size members
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Merge tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:
 "There are three areas of note:

  A bunch of strlcpy()->strscpy() conversions ended up living in my tree
  since they were either Acked by maintainers for me to carry, or got
  ignored for multiple weeks (and were trivial changes).

  The compiler option '-fstrict-flex-arrays=3' has been enabled
  globally, and has been in -next for the entire devel cycle. This
  changes compiler diagnostics (though mainly just -Warray-bounds which
  is disabled) and potential UBSAN_BOUNDS and FORTIFY _warning_
  coverage. In other words, there are no new restrictions, just
  potentially new warnings. Any new FORTIFY warnings we've seen have
  been fixed (usually in their respective subsystem trees). For more
  details, see commit df8fc4e934.

  The under-development compiler attribute __counted_by has been added
  so that we can start annotating flexible array members with their
  associated structure member that tracks the count of flexible array
  elements at run-time. It is possible (likely?) that the exact syntax
  of the attribute will change before it is finalized, but GCC and Clang
  are working together to sort it out. Any changes can be made to the
  macro while we continue to add annotations.

  As an example of that last case, I have a treewide commit waiting with
  such annotations found via Coccinelle:

    https://git.kernel.org/linus/adc5b3cb48a049563dc673f348eab7b6beba8a9b

  Also see commit dd06e72e68 for more details.

  Summary:

   - Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko)

   - Convert strreplace() to return string start (Andy Shevchenko)

   - Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook)

   - Add missing function prototypes seen with W=1 (Arnd Bergmann)

   - Fix strscpy() kerndoc typo (Arne Welzel)

   - Replace strlcpy() with strscpy() across many subsystems which were
     either Acked by respective maintainers or were trivial changes that
     went ignored for multiple weeks (Azeem Shaikh)

   - Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers)

   - Add KUnit tests for strcat()-family

   - Enable KUnit tests of FORTIFY wrappers under UML

   - Add more complete FORTIFY protections for strlcat()

   - Add missed disabling of FORTIFY for all arch purgatories.

   - Enable -fstrict-flex-arrays=3 globally

   - Tightening UBSAN_BOUNDS when using GCC

   - Improve checkpatch to check for strcpy, strncpy, and fake flex
     arrays

   - Improve use of const variables in FORTIFY

   - Add requested struct_size_t() helper for types not pointers

   - Add __counted_by macro for annotating flexible array size members"

* tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (54 commits)
  netfilter: ipset: Replace strlcpy with strscpy
  uml: Replace strlcpy with strscpy
  um: Use HOST_DIR for mrproper
  kallsyms: Replace all non-returning strlcpy with strscpy
  sh: Replace all non-returning strlcpy with strscpy
  of/flattree: Replace all non-returning strlcpy with strscpy
  sparc64: Replace all non-returning strlcpy with strscpy
  Hexagon: Replace all non-returning strlcpy with strscpy
  kobject: Use return value of strreplace()
  lib/string_helpers: Change returned value of the strreplace()
  jbd2: Avoid printing outside the boundary of the buffer
  checkpatch: Check for 0-length and 1-element arrays
  riscv/purgatory: Do not use fortified string functions
  s390/purgatory: Do not use fortified string functions
  x86/purgatory: Do not use fortified string functions
  acpi: Replace struct acpi_table_slit 1-element array with flex-array
  clocksource: Replace all non-returning strlcpy with strscpy
  string: use __builtin_memcpy() in strlcpy/strlcat
  staging: most: Replace all non-returning strlcpy with strscpy
  drm/i2c: tda998x: Replace all non-returning strlcpy with strscpy
  ...
 2023-06-27 21:24:18 -07:00
Linus Torvalds
8ad78685ff pstore updates for v6.5-rc1 
- Check for out-of-memory condition (Jiasheng Jiang)
 
 - Convert to platform remove callback returning void (Uwe Kleine-König)
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Merge tag 'pstore-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull pstore updates from Kees Cook:

 - Check for out-of-memory condition (Jiasheng Jiang)

 - Convert to platform remove callback returning void (Uwe Kleine-König)

* tag 'pstore-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  pstore/ram: Add check for kstrdup
  pstore/ram: Convert to platform remove callback returning void
 2023-06-27 21:21:32 -07:00
Linus Torvalds
d416a46c95 execve updates for v6.5-rc1 
- Fix a few comments for correctness and typos (Baruch Siach)
 
 - Small simplifications for binfmt (Christophe JAILLET)
 
 - Set p_align to 4 for PT_NOTE in core dump (Fangrui Song)
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Merge tag 'execve-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull execve updates from Kees Cook:

 - Fix a few comments for correctness and typos (Baruch Siach)

 - Small simplifications for binfmt (Christophe JAILLET)

 - Set p_align to 4 for PT_NOTE in core dump (Fangrui Song)

* tag 'execve-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  binfmt_elf: fix comment typo s/reset/regset/
  elf: correct note name comment
  binfmt: Slightly simplify elf_fdpic_map_file()
  binfmt: Use struct_size()
  coredump, vmcore: Set p_align to 4 for PT_NOTE
 2023-06-27 21:12:41 -07:00
Linus Torvalds
98be618ad0 Two patches that improve inode attribute initialization. 
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Merge tag 'Smack-for-6.5' of https://github.com/cschaufler/smack-next

Pull smack updates from Casey Schaufler:
 "There are two patches, both of which change how Smack initializes the
  SMACK64TRANSMUTE extended attribute.

  The first corrects the behavior of overlayfs, which creates inodes
  differently from other filesystems. The second ensures that transmute
  attributes specified by mount options are correctly assigned"

* tag 'Smack-for-6.5' of https://github.com/cschaufler/smack-next:
  smack: Record transmuting in smk_transmuted
  smack: Retrieve transmuting information in smack_inode_getsecurity()
 2023-06-27 17:58:06 -07:00
Linus Torvalds
b4c7f2e6ef integrity-v6.5 
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Merge tag 'integrity-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity

Pull integrity subsystem updates from Mimi Zohar:
 "An i_version change, one bug fix, and three kernel doc fixes:

   - instead of IMA detecting file change by directly accesssing
     i_version, it now calls vfs_getattr_nosec().

   - fix a race condition when inserting a new node in the iint rb-tree"

* tag 'integrity-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
  ima: Fix build warnings
  evm: Fix build warnings
  evm: Complete description of evm_inode_setattr()
  integrity: Fix possible multiple allocation in integrity_inode_get()
  IMA: use vfs_getattr_nosec to get the i_version
 2023-06-27 17:32:34 -07:00
Linus Torvalds
21953eb16c lsm/stable-6.5 PR 20230626 
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Merge tag 'lsm-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

Pull lsm updates from Paul Moore:

 - A SafeSetID patch to correct what appears to be a cut-n-paste typo in
   the code causing a UID to be printed where a GID was desired.

   This is coming via the LSM tree because we haven't been able to get a
   response from the SafeSetID maintainer (Micah Morton) in several
   months. Hopefully we are able to get in touch with Micah, but until
   we do I'm going to pick them up in the LSM tree.

 - A small fix to the reiserfs LSM xattr code.

   We're continuing to work through some issues with the reiserfs code
   as we try to fixup the LSM xattr handling, but in the process we're
   uncovering some ugly problems in reiserfs and we may just end up
   removing the LSM xattr support in reiserfs prior to reiserfs'
   removal.

   For better or worse, this shouldn't impact any of the reiserfs users,
   as we discovered that LSM xattrs on reiserfs were completely broken,
   meaning no one is currently using the combo of reiserfs and a file
   labeling LSM.

 - A tweak to how the cap_user_data_t struct/typedef is declared in the
   header file to appease the Sparse gods.

 - In the process of trying to sort out the SafeSetID lost-maintainer
   problem I realized that I needed to update the labeled networking
   entry to "Supported".

 - Minor comment/documentation and spelling fixes.

* tag 'lsm-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
  device_cgroup: Fix kernel-doc warnings in device_cgroup
  SafeSetID: fix UID printed instead of GID
  MAINTAINERS: move labeled networking to "supported"
  capability: erase checker warnings about struct __user_cap_data_struct
  lsm: fix a number of misspellings
  reiserfs: Initialize sec->length in reiserfs_security_init().
  capability: fix kernel-doc warnings in capability.c
 2023-06-27 17:24:26 -07:00
Linus Torvalds
729b39ec1b selinux/stable-6.5 PR 20230626 
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Merge tag 'selinux-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull selinux updates from Paul Moore:

 - Thanks to help from the MPTCP folks, it looks like we have finally
   sorted out a proper solution to the MPTCP socket labeling issue, see
   the new security_mptcp_add_subflow() LSM hook.

 - Fix the labeled NFS handling such that a labeled NFS share mounted
   prior to the initial SELinux policy load is properly labeled once a
   policy is loaded; more information in the commit description.

 - Two patches to security/selinux/Makefile, the first took the cleanups
   in v6.4 a bit further and the second removed the grouped targets
   support as that functionality doesn't appear to be properly supported
   prior to make v4.3.

 - Deprecate the "fs" object context type in SELinux policies. The fs
   object context type was an old vestige that was introduced back in
   v2.6.12-rc2 but never really used.

 - A number of small changes that remove dead code, clean up some
   awkward bits, and generally improve the quality of the code. See the
   individual commit descriptions for more information.

* tag 'selinux-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: avoid bool as identifier name
  selinux: fix Makefile for versions of make < v4.3
  selinux: make labeled NFS work when mounted before policy load
  selinux: cleanup exit_sel_fs() declaration
  selinux: deprecated fs ocon
  selinux: make header files self-including
  selinux: keep context struct members in sync
  selinux: Implement mptcp_add_subflow hook
  security, lsm: Introduce security_mptcp_add_subflow()
  selinux: small cleanups in selinux_audit_rule_init()
  selinux: declare read-only data arrays const
  selinux: retain const qualifier on string literal in avtab_hash_eval()
  selinux: drop return at end of void function avc_insert()
  selinux: avc: drop unused function avc_disable()
  selinux: adjust typos in comments
  selinux: do not leave dangling pointer behind
  selinux: more Makefile tweaks
 2023-06-27 17:18:48 -07:00
Linus Torvalds
cae72026b5 audit/stable-6.5 PR 20230626 
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Merge tag 'audit-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit update from Paul Moore:
 "A single audit patch that resolves two compiler warnings regarding
  missing function prototypes"

* tag 'audit-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: avoid missing-prototype warnings
 2023-06-27 17:15:35 -07:00
Linus Torvalds
26642864f8 Landlock updates for v6.5-rc1 
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Merge tag 'landlock-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux

Pull landlock updates from Mickaël Salaün:
 "Add support for Landlock to UML.

  To do this, this fixes the way hostfs manages inodes according to the
  underlying filesystem [1]. They are now properly handled as for other
  filesystems, which enables Landlock support (and probably other
  features).

  This also extends Landlock's tests with 6 pseudo filesystems,
  including hostfs"

[1] https://lore.kernel.org/all/20230612191430.339153-1-mic@digikod.net/

* tag 'landlock-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
  selftests/landlock: Add hostfs tests
  selftests/landlock: Add tests for pseudo filesystems
  selftests/landlock: Make mounts configurable
  selftests/landlock: Add supports_filesystem() helper
  selftests/landlock: Don't create useless file layouts
  hostfs: Fix ephemeral inodes
 2023-06-27 17:10:27 -07:00
Linus Torvalds
6e2332e0ab cgroup: Changes for v6.5 
* Whenever cpuset needs to rebuild sched_domain, it walked all tasks looking
   for DEADLINE tasks as they need to be accounted on the new domain. Walking
   all tasks can be expensive and there may not be any DEADLINE tasks at all.
   Task iteration is now omitted if there are no DEADLINE tasks.
 
 * Fixes DEADLINE bandwidth misaccounting after task migration failures.
 
 * When no controller is enabled, -Wstringop-overflow warning is triggered.
   The fix patch added an early exit which is too eager and got reverted for
   now. Will fix later.
 
 * Everything else are minor cleanups.
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Merge tag 'cgroup-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup updates from Tejun Heo:

 - Whenever cpuset needs to rebuild sched_domain, it walked all tasks
   looking for DEADLINE tasks as they need to be accounted on the new
   domain. Walking all tasks can be expensive and there may not be any
   DEADLINE tasks at all. Task iteration is now omitted if there are no
   DEADLINE tasks

 - Fixes DEADLINE bandwidth misaccounting after task migration failures

 - When no controller is enabled, -Wstringop-overflow warning is
   triggered. The fix patch added an early exit which is too eager and
   got reverted for now. Will fix later

 - Everything else is minor cleanups

* tag 'cgroup-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  Revert "cgroup: Avoid -Wstringop-overflow warnings"
  cgroup/misc: Expose misc.current on cgroup v2 root
  cgroup: Avoid -Wstringop-overflow warnings
  cgroup: remove obsolete comment on cgroup_on_dfl()
  cgroup: remove unused task_cgroup_path()
  cgroup/cpuset: remove unneeded header files
  cgroup: make cgroup_is_threaded() and cgroup_is_thread_root() static
  rdmacg: fix kernel-doc warnings in rdmacg
  cgroup: Replace the css_set call with cgroup_get
  cgroup: remove unused macro for_each_e_css()
  cgroup: Update out-of-date comment in cgroup_migrate()
  cgroup: Replace all non-returning strlcpy with strscpy
  cgroup/cpuset: remove unneeded header files
  cgroup/cpuset: Free DL BW in case can_attach() fails
  sched/deadline: Create DL BW alloc, free & check overflow interface
  cgroup/cpuset: Iterate only if DEADLINE tasks are present
  sched/cpuset: Keep track of SCHED_DEADLINE task in cpusets
  sched/cpuset: Bring back cpuset_mutex
  cgroup/cpuset: Rename functions dealing with DEADLINE accounting
 2023-06-27 16:54:21 -07:00
Linus Torvalds
72dc6db7e3 workqueue: Ordered workqueue creation cleanups 
For historical reasons, unbound workqueues with max concurrency limit of 1
 are considered ordered, even though the concurrency limit hasn't been
 system-wide for a long time. This creates ambiguity around whether ordered
 execution is actually required for correctness, which was actually confusing
 for e.g. btrfs (btrfs updates are being routed through the btrfs tree).
 
 There aren't that many users in the tree which use the combination and there
 are pending improvements to unbound workqueue affinity handling which will
 make inadvertent use of ordered workqueue a bigger loss. This pull request
 clarifies the situation for most of them by updating the ones which require
 ordered execution to use alloc_ordered_workqueue().
 
 There are some conversions being routed through subsystem-specific trees and
 likely a few stragglers. Once they're all converted, workqueue can trigger a
 warning on unbound + @max_active==1 usages and eventually drop the implicit
 ordered behavior.
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Merge tag 'wq-for-6.5-cleanup-ordered' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull ordered workqueue creation updates from Tejun Heo:
 "For historical reasons, unbound workqueues with max concurrency limit
  of 1 are considered ordered, even though the concurrency limit hasn't
  been system-wide for a long time.

  This creates ambiguity around whether ordered execution is actually
  required for correctness, which was actually confusing for e.g. btrfs
  (btrfs updates are being routed through the btrfs tree).

  There aren't that many users in the tree which use the combination and
  there are pending improvements to unbound workqueue affinity handling
  which will make inadvertent use of ordered workqueue a bigger loss.

  This clarifies the situation for most of them by updating the ones
  which require ordered execution to use alloc_ordered_workqueue().

  There are some conversions being routed through subsystem-specific
  trees and likely a few stragglers. Once they're all converted,
  workqueue can trigger a warning on unbound + @max_active==1 usages and
  eventually drop the implicit ordered behavior"

* tag 'wq-for-6.5-cleanup-ordered' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  rxrpc: Use alloc_ordered_workqueue() to create ordered workqueues
  net: qrtr: Use alloc_ordered_workqueue() to create ordered workqueues
  net: wwan: t7xx: Use alloc_ordered_workqueue() to create ordered workqueues
  dm integrity: Use alloc_ordered_workqueue() to create ordered workqueues
  media: amphion: Use alloc_ordered_workqueue() to create ordered workqueues
  scsi: NCR5380: Use default @max_active for hostdata->work_q
  media: coda: Use alloc_ordered_workqueue() to create ordered workqueues
  crypto: octeontx2: Use alloc_ordered_workqueue() to create ordered workqueues
  wifi: ath10/11/12k: Use alloc_ordered_workqueue() to create ordered workqueues
  wifi: mwifiex: Use default @max_active for workqueues
  wifi: iwlwifi: Use default @max_active for trans_pcie->rba.alloc_wq
  xen/pvcalls: Use alloc_ordered_workqueue() to create ordered workqueues
  virt: acrn: Use alloc_ordered_workqueue() to create ordered workqueues
  net: octeontx2: Use alloc_ordered_workqueue() to create ordered workqueues
  net: thunderx: Use alloc_ordered_workqueue() to create ordered workqueues
  greybus: Use alloc_ordered_workqueue() to create ordered workqueues
  powerpc, workqueue: Use alloc_ordered_workqueue() to create ordered workqueues
 2023-06-27 16:46:06 -07:00
Linus Torvalds
7ab044a4f4 workqueue: Changes for v6.5 
* Concurrency-managed per-cpu work items that hog CPUs and delay the
   execution of other work items are now automatically detected and excluded
   from concurrency management. Reporting on such work items can also be
   enabled through a config option.
 
 * Added tools/workqueue/wq_monitor.py which improves visibility into
   workqueue usages and behaviors.
 
 * Includes Arnd's minimal fix for gcc-13 enum warning on 32bit compiles.
   This conflicts with afa4bb778e ("workqueue: clean up WORK_* constant
   types, clarify masking") in master. Can be resolved by picking the master
   version.
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Merge tag 'wq-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull workqueue updates from Tejun Heo:

 - Concurrency-managed per-cpu work items that hog CPUs and delay the
   execution of other work items are now automatically detected and
   excluded from concurrency management. Reporting on such work items
   can also be enabled through a config option.

 - Added tools/workqueue/wq_monitor.py which improves visibility into
   workqueue usages and behaviors.

 - Arnd's minimal fix for gcc-13 enum warning on 32bit compiles,
   superseded by commit afa4bb778e in mainline.

* tag 'wq-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Disable per-cpu CPU hog detection when wq_cpu_intensive_thresh_us is 0
  workqueue: Fix WARN_ON_ONCE() triggers in worker_enter_idle()
  workqueue: fix enum type for gcc-13
  workqueue: Track and monitor per-workqueue CPU time usage
  workqueue: Report work funcs that trigger automatic CPU_INTENSIVE mechanism
  workqueue: Automatically mark CPU-hogging work items CPU_INTENSIVE
  workqueue: Improve locking rule description for worker fields
  workqueue: Move worker_set/clr_flags() upwards
  workqueue: Re-order struct worker fields
  workqueue: Add pwq->stats[] and a monitoring script
  Further upgrade queue_work_on() comment
 2023-06-27 16:32:52 -07:00
Linus Torvalds
18eb3b6dff xen: branch for v6.5-rc1 
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Merge tag 'for-linus-6.5-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:

 - three patches adding missing prototypes

 - a fix for finding the iBFT in a Xen dom0 for supporting diskless
   iSCSI boot

* tag 'for-linus-6.5-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86: xen: add missing prototypes
  x86/xen: add prototypes for paravirt mmu functions
  iscsi_ibft: Fix finding the iBFT under Xen Dom 0
  xen: xen_debug_interrupt prototype to global header
 2023-06-27 16:03:20 -07:00
Linus Torvalds
6a46676994 s390 updates for 6.5 merge window 
- Fix the style of protected key API driver source: use
   x-mas tree for all local variable declarations.
 
 - Rework protected key API driver to not use the struct
   pkey_protkey and pkey_clrkey anymore. Both structures
   have a fixed size buffer, but with the support of ECC
   protected key these buffers are not big enough. Use
   dynamic buffers internally and transparently for
   userspace.
 
 - Add support for a new 'non CCA clear key token' with
   ECC clear keys supported: ECC P256, ECC P384, ECC P521,
   ECC ED25519 and ECC ED448. This makes it possible to
   derive a protected key from the ECC clear key input via
   PKEY_KBLOB2PROTK3 ioctl, while currently the only way
   to derive is via PCKMO instruction.
 
 - The s390 PMU of PAI crypto and extension 1 NNPA counters
   use atomic_t for reference counting. Replace this with
   the proper data type refcount_t.
 
 - Select ARCH_SUPPORTS_INT128, but limit this to clang for
   now, since gcc generates inefficient code, which may lead
   to stack overflows.
 
 - Replace one-element array with flexible-array member in
   struct vfio_ccw_parent and refactor the rest of the code
   accordingly. Also, prefer struct_size() over sizeof() open-
   coded versions.
 
 - Introduce OS_INFO_FLAGS_ENTRY pointing to a flags field and
   OS_INFO_FLAG_REIPL_CLEAR flag that informs a dumper whether
   the system memory should be cleared or not once dumped.
 
 - Fix a hang when a user attempts to remove a VFIO-AP mediated
   device attached to a guest: add VFIO_DEVICE_GET_IRQ_INFO and
   VFIO_DEVICE_SET_IRQS IOCTLs and wire up the VFIO bus driver
   callback to request a release of the device.
 
 - Fix calculation for R_390_GOTENT relocations for modules.
 
 - Allow any user space process with CAP_PERFMON capability
   read and display the CPU Measurement facility counter sets.
 
 - Rework large statically-defined per-CPU cpu_cf_events data
   structure and replace it with dynamically allocated structures
   created when a perf_event_open() system call is invoked or
   /dev/hwctr device is accessed.
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Merge tag 's390-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Alexander Gordeev:

 - Fix the style of protected key API driver source: use x-mas tree for
   all local variable declarations

 - Rework protected key API driver to not use the struct pkey_protkey
   and pkey_clrkey anymore. Both structures have a fixed size buffer,
   but with the support of ECC protected key these buffers are not big
   enough. Use dynamic buffers internally and transparently for
   userspace

 - Add support for a new 'non CCA clear key token' with ECC clear keys
   supported: ECC P256, ECC P384, ECC P521, ECC ED25519 and ECC ED448.
   This makes it possible to derive a protected key from the ECC clear
   key input via PKEY_KBLOB2PROTK3 ioctl, while currently the only way
   to derive is via PCKMO instruction

 - The s390 PMU of PAI crypto and extension 1 NNPA counters use atomic_t
   for reference counting. Replace this with the proper data type
   refcount_t

 - Select ARCH_SUPPORTS_INT128, but limit this to clang for now, since
   gcc generates inefficient code, which may lead to stack overflows

 - Replace one-element array with flexible-array member in struct
   vfio_ccw_parent and refactor the rest of the code accordingly. Also,
   prefer struct_size() over sizeof() open- coded versions

 - Introduce OS_INFO_FLAGS_ENTRY pointing to a flags field and
   OS_INFO_FLAG_REIPL_CLEAR flag that informs a dumper whether the
   system memory should be cleared or not once dumped

 - Fix a hang when a user attempts to remove a VFIO-AP mediated device
   attached to a guest: add VFIO_DEVICE_GET_IRQ_INFO and
   VFIO_DEVICE_SET_IRQS IOCTLs and wire up the VFIO bus driver callback
   to request a release of the device

 - Fix calculation for R_390_GOTENT relocations for modules

 - Allow any user space process with CAP_PERFMON capability read and
   display the CPU Measurement facility counter sets

 - Rework large statically-defined per-CPU cpu_cf_events data structure
   and replace it with dynamically allocated structures created when a
   perf_event_open() system call is invoked or /dev/hwctr device is
   accessed

* tag 's390-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cpum_cf: rework PER_CPU_DEFINE of struct cpu_cf_events
  s390/cpum_cf: open access to hwctr device for CAP_PERFMON privileged process
  s390/module: fix rela calculation for R_390_GOTENT
  s390/vfio-ap: wire in the vfio_device_ops request callback
  s390/vfio-ap: realize the VFIO_DEVICE_SET_IRQS ioctl
  s390/vfio-ap: realize the VFIO_DEVICE_GET_IRQ_INFO ioctl
  s390/pkey: add support for ecc clear key
  s390/pkey: do not use struct pkey_protkey
  s390/pkey: introduce reverse x-mas trees
  s390/zcore: conditionally clear memory on reipl
  s390/ipl: add REIPL_CLEAR flag to os_info
  vfio/ccw: use struct_size() helper
  vfio/ccw: replace one-element array with flexible-array member
  s390: select ARCH_SUPPORTS_INT128
  s390/pai_ext: replace atomic_t with refcount_t
  s390/pai_crypto: replace atomic_t with refcount_t
 2023-06-27 15:49:10 -07:00
Linus Torvalds
8d8026f376 Xtensa updates for v6.5 
- clean up platform_* interface of the xtensa architecture
 - enable HAVE_ASM_MODVERSIONS
 - drop ARCH_WANT_FRAME_POINTERS
 - clean up unaligned access exception handler
 - provide handler for load/store exceptions
 - various small fixes and cleanups
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Merge tag 'xtensa-20230627' of https://github.com/jcmvbkbc/linux-xtensa

Pull xtensa updates from Max Filippov:

 - clean up platform_* interface of the xtensa architecture

 - enable HAVE_ASM_MODVERSIONS

 - drop ARCH_WANT_FRAME_POINTERS

 - clean up unaligned access exception handler

 - provide handler for load/store exceptions

 - various small fixes and cleanups

* tag 'xtensa-20230627' of https://github.com/jcmvbkbc/linux-xtensa:
  xtensa: dump userspace code around the exception PC
  xtensa: rearrange show_stack output
  xtensa: add load/store exception handler
  xtensa: rearrange unaligned exception handler
  xtensa: always install slow handler for unaligned access exception
  xtensa: move early_trap_init from kasan_early_init to init_arch
  xtensa: drop ARCH_WANT_FRAME_POINTERS
  xtensa: report trax and perf counters in cpuinfo
  xtensa: add asm-prototypes.h
  xtensa: only build __strncpy_user with CONFIG_ARCH_HAS_STRNCPY_FROM_USER
  xtensa: drop bcopy implementation
  xtensa: drop EXPORT_SYMBOL for common_exception_return
  xtensa: boot-redboot: clean up Makefile
  xtensa: clean up default platform functions
  xtensa: drop platform_halt and platform_power_off
  xtensa: drop platform_restart
  xtensa: drop platform_heartbeat
  xtensa: xt2000: drop empty platform_init
 2023-06-27 15:44:11 -07:00
Dinh Nguyen
0ae6122996 Revert "nios2: Convert __pte_free_tlb() to use ptdescs" 
This reverts commit 6ebe94baa2.

The patch "nios2: Convert __pte_free_tlb() to use ptdescs" was supposed
to go together with a patchset that Vishal Moola had planned taking it
through the mm tree. By just having this patch, all NIOS2 builds are
broken.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2023-06-27 15:28:23 -07:00
Linus Torvalds
6f612579be objtool changes for v6.5: 
- Build footprint & performance improvements:
 
     - Reduce memory usage with CONFIG_DEBUG_INFO=y
 
       In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel, DWARF
       creates almost 200 million relocations, ballooning objtool's peak heap
       usage to 53GB.  These patches reduce that to 25GB.
 
       On a distro-type kernel with kernel IBT enabled, they reduce objtool's
       peak heap usage from 4.2GB to 2.8GB.
 
       These changes also improve the runtime significantly.
 
 - Debuggability improvements:
 
     - Add the unwind_debug command-line option, for more extend unwinding
       debugging output.
     - Limit unreachable warnings to once per function
     - Add verbose option for disassembling affected functions
     - Include backtrace in verbose mode
     - Detect missing __noreturn annotations
     - Ignore exc_double_fault() __noreturn warnings
     - Remove superfluous global_noreturns entries
     - Move noreturn function list to separate file
     - Add __kunit_abort() to noreturns
 
 - Unwinder improvements:
 
     - Allow stack operations in UNWIND_HINT_UNDEFINED regions
     - drm/vmwgfx: Add unwind hints around RBP clobber
 
 - Cleanups:
 
     - Move the x86 entry thunk restore code into thunk functions
     - x86/unwind/orc: Use swap() instead of open coding it
     - Remove unnecessary/unused variables
 
 - Fixes for modern stack canary handling
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molar:
 "Build footprint & performance improvements:

   - Reduce memory usage with CONFIG_DEBUG_INFO=y

     In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel,
     DWARF creates almost 200 million relocations, ballooning objtool's
     peak heap usage to 53GB. These patches reduce that to 25GB.

     On a distro-type kernel with kernel IBT enabled, they reduce
     objtool's peak heap usage from 4.2GB to 2.8GB.

     These changes also improve the runtime significantly.

  Debuggability improvements:

   - Add the unwind_debug command-line option, for more extend unwinding
     debugging output
   - Limit unreachable warnings to once per function
   - Add verbose option for disassembling affected functions
   - Include backtrace in verbose mode
   - Detect missing __noreturn annotations
   - Ignore exc_double_fault() __noreturn warnings
   - Remove superfluous global_noreturns entries
   - Move noreturn function list to separate file
   - Add __kunit_abort() to noreturns

  Unwinder improvements:

   - Allow stack operations in UNWIND_HINT_UNDEFINED regions
   - drm/vmwgfx: Add unwind hints around RBP clobber

  Cleanups:

   - Move the x86 entry thunk restore code into thunk functions
   - x86/unwind/orc: Use swap() instead of open coding it
   - Remove unnecessary/unused variables

  Fixes for modern stack canary handling"

* tag 'objtool-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
  x86/orc: Make the is_callthunk() definition depend on CONFIG_BPF_JIT=y
  objtool: Skip reading DWARF section data
  objtool: Free insns when done
  objtool: Get rid of reloc->rel[a]
  objtool: Shrink elf hash nodes
  objtool: Shrink reloc->sym_reloc_entry
  objtool: Get rid of reloc->jump_table_start
  objtool: Get rid of reloc->addend
  objtool: Get rid of reloc->type
  objtool: Get rid of reloc->offset
  objtool: Get rid of reloc->idx
  objtool: Get rid of reloc->list
  objtool: Allocate relocs in advance for new rela sections
  objtool: Add for_each_reloc()
  objtool: Don't free memory in elf_close()
  objtool: Keep GElf_Rel[a] structs synced
  objtool: Add elf_create_section_pair()
  objtool: Add mark_sec_changed()
  objtool: Fix reloc_hash size
  objtool: Consolidate rel/rela handling
  ...
 2023-06-27 15:05:41 -07:00
Linus Torvalds
4d6751815b Changes in this cycle were: 
- Remove Xen-PV leftovers from init_32.c
 
 - Fix __swp_entry_to_pte() warning splat for Xen PV guests,
   triggered on CONFIG_DEBUG_VM_PGTABLE=y
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-mm-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 mm updates from Ingo Molnar:

 - Remove Xen-PV leftovers from init_32.c

 - Fix __swp_entry_to_pte() warning splat for Xen PV guests, triggered
   on CONFIG_DEBUG_VM_PGTABLE=y

* tag 'x86-mm-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Remove Xen-PV leftovers from init_32.c
  x86/mm: Fix __swp_entry_to_pte() for Xen PV guests
 2023-06-27 14:47:17 -07:00
Linus Torvalds
a193cc7506 Perf events changes for v6.5: 
- Rework & fix the event forwarding logic by extending the
   core interface. This fixes AMD PMU events that have to
   be forwarded from the core PMU to the IBS PMU.
 
 - Add self-tests to test AMD IBS invocation via core PMU events
 
 - Clean up Intel FixCntrCtl MSR encoding & handling
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf events updates from Ingo Molnar:

 - Rework & fix the event forwarding logic by extending the core
   interface.

   This fixes AMD PMU events that have to be forwarded from the
   core PMU to the IBS PMU.

 - Add self-tests to test AMD IBS invocation via core PMU events

 - Clean up Intel FixCntrCtl MSR encoding & handling

* tag 'perf-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Re-instate the linear PMU search
  perf/x86/intel: Define bit macros for FixCntrCtl MSR
  perf test: Add selftest to test IBS invocation via core pmu events
  perf/core: Remove pmu linear searching code
  perf/ibs: Fix interface via core pmu events
  perf/core: Rework forwarding of {task|cpu}-clock events
 2023-06-27 14:43:02 -07:00
Linus Torvalds
bc6cb4d5bc Locking changes for v6.5: 
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double().
 
   The cmpxchg128() family of functions is basically & functionally
   the same as cmpxchg_double(), but with a saner interface: instead
   of a 6-parameter horror that forced u128 - u64/u64-halves layout
   details on the interface and exposed users to complexity,
   fragility & bugs, use a natural 3-parameter interface with u128 types.
 
 - Restructure the generated atomic headers, and add
   kerneldoc comments for all of the generic atomic{,64,_long}_t
   operations. Generated definitions are much cleaner now,
   and come with documentation.
 
 - Implement lock_set_cmp_fn() on lockdep, for defining an ordering
   when taking multiple locks of the same type. This gets rid of
   one use of lockdep_set_novalidate_class() in the bcache code.
 
 - Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended
   variable shadowing generating garbage code on Clang on certain
   ARM builds.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - Introduce cmpxchg128() -- aka. the demise of cmpxchg_double()

   The cmpxchg128() family of functions is basically & functionally the
   same as cmpxchg_double(), but with a saner interface.

   Instead of a 6-parameter horror that forced u128 - u64/u64-halves
   layout details on the interface and exposed users to complexity,
   fragility & bugs, use a natural 3-parameter interface with u128
   types.

 - Restructure the generated atomic headers, and add kerneldoc comments
   for all of the generic atomic{,64,_long}_t operations.

   The generated definitions are much cleaner now, and come with
   documentation.

 - Implement lock_set_cmp_fn() on lockdep, for defining an ordering when
   taking multiple locks of the same type.

   This gets rid of one use of lockdep_set_novalidate_class() in the
   bcache code.

 - Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended variable
   shadowing generating garbage code on Clang on certain ARM builds.

* tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
  locking/atomic: scripts: fix ${atomic}_dec_if_positive() kerneldoc
  percpu: Fix self-assignment of __old in raw_cpu_generic_try_cmpxchg()
  locking/atomic: treewide: delete arch_atomic_*() kerneldoc
  locking/atomic: docs: Add atomic operations to the driver basic API documentation
  locking/atomic: scripts: generate kerneldoc comments
  docs: scripts: kernel-doc: accept bitwise negation like ~@var
  locking/atomic: scripts: simplify raw_atomic*() definitions
  locking/atomic: scripts: simplify raw_atomic_long*() definitions
  locking/atomic: scripts: split pfx/name/sfx/order
  locking/atomic: scripts: restructure fallback ifdeffery
  locking/atomic: scripts: build raw_atomic_long*() directly
  locking/atomic: treewide: use raw_atomic*_<op>()
  locking/atomic: scripts: add trivial raw_atomic*_<op>()
  locking/atomic: scripts: factor out order template generation
  locking/atomic: scripts: remove leftover "${mult}"
  locking/atomic: scripts: remove bogus order parameter
  locking/atomic: xtensa: add preprocessor symbols
  locking/atomic: x86: add preprocessor symbols
  locking/atomic: sparc: add preprocessor symbols
  locking/atomic: sh: add preprocessor symbols
  ...
 2023-06-27 14:14:30 -07:00
Linus Torvalds
ed3b7923a8 Scheduler changes for v6.5: 
- Scheduler SMP load-balancer improvements:
 
     - Avoid unnecessary migrations within SMT domains on hybrid systems.
 
       Problem:
 
         On hybrid CPU systems, (processors with a mixture of higher-frequency
 	SMT cores and lower-frequency non-SMT cores), under the old code
 	lower-priority CPUs pulled tasks from the higher-priority cores if
 	more than one SMT sibling was busy - resulting in many unnecessary
 	task migrations.
 
       Solution:
 
         The new code improves the load balancer to recognize SMT cores with more
         than one busy sibling and allows lower-priority CPUs to pull tasks, which
         avoids superfluous migrations and lets lower-priority cores inspect all SMT
         siblings for the busiest queue.
 
     - Implement the 'runnable boosting' feature in the EAS balancer: consider CPU
       contention in frequency, EAS max util & load-balance busiest CPU selection.
 
       This improves CPU utilization for certain workloads, while leaves other key
       workloads unchanged.
 
 - Scheduler infrastructure improvements:
 
     - Rewrite the scheduler topology setup code by consolidating it
       into the build_sched_topology() helper function and building
       it dynamically on the fly.
 
     - Resolve the local_clock() vs. noinstr complications by rewriting
       the code: provide separate sched_clock_noinstr() and
       local_clock_noinstr() functions to be used in instrumentation code,
       and make sure it is all instrumentation-safe.
 
 - Fixes:
 
     - Fix a kthread_park() race with wait_woken()
 
     - Fix misc wait_task_inactive() bugs unearthed by the -rt merge:
        - Fix UP PREEMPT bug by unifying the SMP and UP implementations.
        - Fix task_struct::saved_state handling.
 
     - Fix various rq clock update bugs, unearthed by turning on the rq clock
       debugging code.
 
     - Fix the PSI WINDOW_MIN_US trigger limit, which was easy to trigger by
       creating enough cgroups, by removing the warnign and restricting
       window size triggers to PSI file write-permission or CAP_SYS_RESOURCE.
 
     - Propagate SMT flags in the topology when removing degenerate domain
 
     - Fix grub_reclaim() calculation bug in the deadline scheduler code
 
     - Avoid resetting the min update period when it is unnecessary, in
       psi_trigger_destroy().
 
     - Don't balance a task to its current running CPU in load_balance(),
       which was possible on certain NUMA topologies with overlapping
       groups.
 
     - Fix the sched-debug printing of rq->nr_uninterruptible
 
 - Cleanups:
 
     - Address various -Wmissing-prototype warnings, as a preparation
       to (maybe) enable this warning in the future.
 
     - Remove unused code
 
     - Mark more functions __init
 
     - Fix shadow-variable warnings
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
 "Scheduler SMP load-balancer improvements:

   - Avoid unnecessary migrations within SMT domains on hybrid systems.

     Problem:

        On hybrid CPU systems, (processors with a mixture of
        higher-frequency SMT cores and lower-frequency non-SMT cores),
        under the old code lower-priority CPUs pulled tasks from the
        higher-priority cores if more than one SMT sibling was busy -
        resulting in many unnecessary task migrations.

     Solution:

        The new code improves the load balancer to recognize SMT cores
        with more than one busy sibling and allows lower-priority CPUs
        to pull tasks, which avoids superfluous migrations and lets
        lower-priority cores inspect all SMT siblings for the busiest
        queue.

   - Implement the 'runnable boosting' feature in the EAS balancer:
     consider CPU contention in frequency, EAS max util & load-balance
     busiest CPU selection.

     This improves CPU utilization for certain workloads, while leaves
     other key workloads unchanged.

  Scheduler infrastructure improvements:

   - Rewrite the scheduler topology setup code by consolidating it into
     the build_sched_topology() helper function and building it
     dynamically on the fly.

   - Resolve the local_clock() vs. noinstr complications by rewriting
     the code: provide separate sched_clock_noinstr() and
     local_clock_noinstr() functions to be used in instrumentation code,
     and make sure it is all instrumentation-safe.

  Fixes:

   - Fix a kthread_park() race with wait_woken()

   - Fix misc wait_task_inactive() bugs unearthed by the -rt merge:
       - Fix UP PREEMPT bug by unifying the SMP and UP implementations
       - Fix task_struct::saved_state handling

   - Fix various rq clock update bugs, unearthed by turning on the rq
     clock debugging code.

   - Fix the PSI WINDOW_MIN_US trigger limit, which was easy to trigger
     by creating enough cgroups, by removing the warnign and restricting
     window size triggers to PSI file write-permission or
     CAP_SYS_RESOURCE.

   - Propagate SMT flags in the topology when removing degenerate domain

   - Fix grub_reclaim() calculation bug in the deadline scheduler code

   - Avoid resetting the min update period when it is unnecessary, in
     psi_trigger_destroy().

   - Don't balance a task to its current running CPU in load_balance(),
     which was possible on certain NUMA topologies with overlapping
     groups.

   - Fix the sched-debug printing of rq->nr_uninterruptible

  Cleanups:

   - Address various -Wmissing-prototype warnings, as a preparation to
     (maybe) enable this warning in the future.

   - Remove unused code

   - Mark more functions __init

   - Fix shadow-variable warnings"

* tag 'sched-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
  sched/core: Avoid multiple calling update_rq_clock() in __cfsb_csd_unthrottle()
  sched/core: Avoid double calling update_rq_clock() in __balance_push_cpu_stop()
  sched/core: Fixed missing rq clock update before calling set_rq_offline()
  sched/deadline: Update GRUB description in the documentation
  sched/deadline: Fix bandwidth reclaim equation in GRUB
  sched/wait: Fix a kthread_park race with wait_woken()
  sched/topology: Mark set_sched_topology() __init
  sched/fair: Rename variable cpu_util eff_util
  arm64/arch_timer: Fix MMIO byteswap
  sched/fair, cpufreq: Introduce 'runnable boosting'
  sched/fair: Refactor CPU utilization functions
  cpuidle: Use local_clock_noinstr()
  sched/clock: Provide local_clock_noinstr()
  x86/tsc: Provide sched_clock_noinstr()
  clocksource: hyper-v: Provide noinstr sched_clock()
  clocksource: hyper-v: Adjust hv_read_tsc_page_tsc() to avoid special casing U64_MAX
  x86/vdso: Fix gettimeofday masking
  math64: Always inline u128 version of mul_u64_u64_shr()
  s390/time: Provide sched_clock_noinstr()
  loongarch: Provide noinstr sched_clock_read()
  ...
 2023-06-27 14:03:21 -07:00
Linus Torvalds
e8f75c0270 - A fix to avoid using a list iterator variable after the loop it is 
used in
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Merge tag 'x86_sgx_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull SGX update from Borislav Petkov:

 - A fix to avoid using a list iterator variable after the loop it is
   used in

* tag 'x86_sgx_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sgx: Avoid using iterator after loop in sgx_mmu_notifier_release()
 2023-06-27 13:49:33 -07:00
Jiri Kosina
b571809ec3 Merge branch 'for-6.5/wacom' into for-linus 
- touch selftests for hid-wacom (Joshua Dickens)
- conversion of hid-wacom to use ktime_t (Jason Gerecke)
 2023-06-27 22:43:39 +02:00