Peter Zijlstra a1d912d7ac intel_idle: Disable IBRS during long idle ... commit bf5835bcdb upstream. Having IBRS enabled while the SMT sibling is idle unnecessarily slows down the running sibling. OTOH, disabling IBRS around idle takes two MSR writes, which will increase the idle latency. Therefore, only disable IBRS around deeper idle states. Shallow idle states are bounded by the tick in duration, since NOHZ is not allowed for them by virtue of their short target residency. Only do this for mwait-driven idle, since that keeps interrupts disabled across idle, which makes disabling IBRS vs IRQ-entry a non-issue. Note: C6 is a random threshold, most importantly C1 probably shouldn't disable IBRS, benchmarking needed. Suggested-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> [cascardo: no CPUIDLE_FLAG_IRQ_ENABLE] Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-07-23 12:54:04 +02:00
..
accessibility
acpi	ACPI: video: Fix acpi_video_handles_brightness_key_presses()	2022-07-21 21:24:32 +02:00
amba
android
ata	ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()	2022-06-22 14:21:56 +02:00
atm
auxdisplay
base	x86/bugs: Report AMD retbleed vulnerability	2022-07-23 12:54:02 +02:00
bcma
block	virtio-blk: modify the value type of num in virtio_queue_rq()	2022-07-12 16:35:11 +02:00
bluetooth	Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event	2022-07-12 16:35:08 +02:00
bus	bus: mhi: Fix pm_state conversion to string	2022-07-12 16:35:03 +02:00
cdrom
char	random: update comment from copy_to_user() -> copy_to_iter()	2022-06-29 09:03:31 +02:00
clk	clk: renesas: r9a07g044: Update multiplier and divider values for PLL2/3	2022-07-12 16:34:58 +02:00
clocksource	clocksource/drivers/ixp4xx: remove EXPORT_SYMBOL_GPL from ixp4xx_timer_setup()	2022-07-07 17:53:32 +02:00
comedi	comedi: vmk80xx: fix expression for tx buffer size	2022-06-22 14:22:03 +02:00
connector
counter
cpufreq	cpufreq: pmac32-cpufreq: Fix refcount leak bug	2022-07-21 21:24:34 +02:00
cpuidle	cpuidle: PSCI: Improve support for suspend-to-RAM for PSCI OSI mode	2022-06-09 10:22:33 +02:00
crypto	crypto: sun8i-ss - handle zero sized sg	2022-06-09 10:23:11 +02:00
cxl	cxl/port: Hold port reference until decoder release	2022-07-12 16:34:58 +02:00
dax	dax: make sure inodes are flushed before destroy cache	2022-04-08 14:23:31 +02:00
dca
devfreq	PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events	2022-07-07 17:53:27 +02:00
dio
dma	dmaengine: idxd: force wq context cleanup on device disable path	2022-07-12 16:35:19 +02:00
dma-buf	dma-buf/poll: Get a file reference for outstanding fence callbacks	2022-07-12 16:34:51 +02:00
edac	EDAC/dmc520: Don't print an error for each unconfigured interrupt line	2022-06-09 10:22:47 +02:00
eisa
extcon	extcon: Modify extcon device to be created after driver data is set	2022-06-14 18:36:22 +02:00
firewire	firewire: core: extend card->lock in fw_core_handle_bus_reset	2022-05-12 12:30:05 +02:00
firmware	firmware: sysfb: Add sysfb_disable() helper function	2022-07-21 21:24:35 +02:00
fpga
fsi	fsi: occ: Force sequence numbering per OCC	2022-07-07 17:53:32 +02:00
gnss
gpio	gpio: winbond: Fix error code in winbond_gpio_get()	2022-06-29 09:03:26 +02:00
gpu	drm/aperture: Run fbdev removal before internal helpers	2022-07-21 21:24:44 +02:00
greybus
hid	HID: amd_sfh: Modify the hid name	2022-06-09 10:22:56 +02:00
hsi
hv	Drivers: hv: vmbus: Release cpu lock in error case	2022-06-22 14:22:00 +02:00
hwmon	hwmon: (ibmaem) don't call platform_device_del() if platform_device_add() fails	2022-07-07 17:53:35 +02:00
hwspinlock
hwtracing	coresight: cpu-debug: Replace mutex with mutex_trylock on panic notifier	2022-06-14 18:36:06 +02:00
i2c	i2c: cadence: Unregister the clk notifier in error path	2022-07-12 16:35:16 +02:00
i3c
idle	intel_idle: Disable IBRS during long idle	2022-07-23 12:54:04 +02:00
iio	iio: accel: mma8452: use the correct logic to get mma8452_data	2022-07-12 16:35:01 +02:00
infiniband	RDMA/cm: Fix memory leak in ib_cm_insert_listen	2022-07-07 17:53:26 +02:00
input	Input: goodix - try not to touch the reset-pin on x86/ACPI devices	2022-07-12 16:34:51 +02:00
interconnect	interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate	2022-06-09 10:23:31 +02:00
iommu	iommu/vt-d: Fix PCI bus rescan device hot add	2022-07-12 16:35:09 +02:00
ipack
irqchip	irqchip: or1k-pic: Undefine mask_ack for level triggered hardware	2022-07-21 21:24:40 +02:00
isdn
leds
macintosh	macintosh: via-pmu and via-cuda need RTC_LIB	2022-06-09 10:23:12 +02:00
mailbox	mailbox: forward the hrtimer if not queued and under a lock	2022-06-09 10:23:12 +02:00
mcb
md	dm raid: fix KASAN warning in raid5_add_disks	2022-07-07 17:53:24 +02:00
media	media: davinci: vpif: fix use-after-free on driver unbind	2022-07-12 16:34:57 +02:00
memory	memory: renesas-rpc-if: Avoid unaligned bus access for HyperFlash	2022-07-12 16:34:52 +02:00
memstick
message
mfd	mfd: davinci_voicecodec: Fix possible null-ptr-deref davinci_vc_probe()	2022-06-09 10:23:12 +02:00
misc	misc: rtsx_usb: set return value in rsp_buf alloc err path	2022-07-12 16:35:17 +02:00
mmc	mmc: mediatek: wait dma stop bit reset to 0	2022-06-29 09:03:19 +02:00
most
mtd	Revert "mtd: rawnand: gpmi: Fix setting busy timeout setting"	2022-07-15 10:13:00 +02:00
mux
net	Revert "can: xilinx_can: Limit CANFD brp to 2"	2022-07-21 21:24:40 +02:00
nfc	NFC: nxp-nci: don't print header length mismatch on i2c error	2022-07-21 21:24:35 +02:00
ntb
nubus
nvdimm	nvdimm: Fix badblocks clear off-by-one error	2022-07-07 17:53:24 +02:00
nvme	nvme-pci: phison e16 has bogus namespace ids	2022-07-21 21:24:41 +02:00
nvmem
of	of: overlay: do not break notify on NOTIFY_{OK|STOP}	2022-06-09 10:22:50 +02:00
opp	OPP: call of_node_put() on error path in _bandwidth_supported()	2022-06-09 10:23:13 +02:00
parisc	parisc: Fix CPU affinity for Lasi, WAX and Dino chips	2022-04-13 20:59:14 +02:00
parport
pci	PCI: pciehp: Ignore Link Down/Up caused by error-induced Hot Reset	2022-07-12 16:34:52 +02:00
pcmcia	pcmcia: db1xxx_ss: restrict to MIPS_DB1XXX boards	2022-06-14 18:36:02 +02:00
perf	arm_pmu: Validate single/group leader events	2022-04-27 14:39:00 +02:00
phy	phy: qcom-qmp: fix pipe-clock imbalance on power-on failure	2022-06-14 18:36:06 +02:00
pinctrl	pinctrl: aspeed: Fix potential NULL dereference in aspeed_pinmux_set_mux()	2022-07-21 21:24:36 +02:00
platform	platform/x86: hp-wmi: Ignore Sanitization Mode event	2022-07-21 21:24:34 +02:00
pnp
power	extcon: Fix extcon_get_extcon_dev() error handling	2022-06-14 18:36:21 +02:00
powercap
pps	pps: clients: gpio: Propagate return value from pps_gpio_probe	2022-04-08 14:23:44 +02:00
ps3
ptp	ptp: replace snprintf with sysfs_emit	2022-04-13 20:59:01 +02:00
pwm	pwm: raspberrypi-poe: Fix endianness in firmware struct	2022-06-14 18:36:04 +02:00
rapidio
ras
regulator	regulator: scmi: Fix refcount leak in scmi_regulator_probe	2022-06-09 10:23:00 +02:00
remoteproc	remoteproc: imx_rproc: Ignore create mem entry for resource table	2022-06-14 18:36:03 +02:00
reset	reset: tegra-bpmp: Restore Handle errors in BPMP response	2022-04-27 14:38:55 +02:00
rpmsg	rpmsg: qcom_smd: Fix returning 0 if irq_of_parse_and_map() fails	2022-06-14 18:36:05 +02:00
rtc	rtc: ftrtc010: Fix error handling in ftrtc010_rtc_probe	2022-06-14 18:36:07 +02:00
s390	s390/stp: clock_delta should be signed	2022-06-09 10:23:21 +02:00
sbus
scsi	scsi: hisi_sas: Limit max hw sectors for v3 HW	2022-07-21 21:24:34 +02:00
sh
siox
slimbus	slimbus: qcom: Fix IRQ check in qcom_slim_probe	2022-05-18 10:26:55 +02:00
soc	soc: ixp4xx/npe: Fix unused match warning	2022-07-21 21:24:40 +02:00
soundwire	soundwire: qcom: adjust autoenumeration timeout	2022-06-14 18:36:21 +02:00
spi	spi: amd: Limit max transfer and message size	2022-07-21 21:24:16 +02:00
spmi
ssb
staging	staging: r8188eu: Fix warning of array overflow in ioctl_linux.c	2022-06-22 14:21:59 +02:00
target	target: remove an incorrect unmap zeroes data deduction	2022-06-09 10:22:47 +02:00
tc
tee
thermal	thermal: devfreq_cooling: use local ops instead of global ops	2022-06-09 10:23:26 +02:00
thunderbolt	thunderbolt: Use different lane for second DisplayPort tunnel	2022-06-14 18:36:20 +02:00
tty	serial: 8250: Fix PM usage_count for console handover	2022-07-21 21:24:43 +02:00
uio
usb	usb: dwc3: gadget: Fix event pending check	2022-07-21 21:24:42 +02:00
vdpa	vduse: Tie vduse mgmtdev and its device	2022-07-21 21:24:33 +02:00
vfio	vfio/pci: Fix vf_token mechanism when device-specific VF drivers are used	2022-04-20 09:34:13 +02:00
vhost	vringh: Fix loop descriptors check in the indirect cases	2022-06-14 18:36:24 +02:00
video	fbdev: Disable sysfb device registration when removing conflicting FBs	2022-07-21 21:24:35 +02:00
virt	virt: acrn: fix a memory leak in acrn_dev_ioctl()	2022-04-08 14:23:50 +02:00
virtio	virtio_mmio: Restore guest page size on resume	2022-07-21 21:24:33 +02:00
visorbus
vlynq
vme
w1	w1: w1_therm: fixes w1_seq for ds28ea00 sensors	2022-04-13 20:59:11 +02:00
watchdog	watchdog: wdat_wdt: Stop watchdog when rebooting the system	2022-06-14 18:36:22 +02:00
xen	xen/gntdev: Ignore failure to unmap INVALID_GRANT_HANDLE	2022-07-21 21:24:23 +02:00
zorro
Kconfig
Makefile