linux-stable/drivers
Ard Biesheuvel 046545314c x86/boot: Move mem_encrypt= parsing to the decompressor
commit cd0d9d92c8 upstream.

The early SME/SEV code parses the command line very early, in order to
decide whether or not memory encryption should be enabled, which needs
to occur even before the initial page tables are created.

This is problematic for a number of reasons:
- this early code runs from the 1:1 mapping provided by the decompressor
  or firmware, which uses a different translation than the one assumed by
  the linker, and so the code needs to be built in a special way;
- parsing external input while the entire kernel image is still mapped
  writable is a bad idea in general, and really does not belong in
  security minded code;
- the current code ignores the built-in command line entirely (although
  this appears to be the case for the entire decompressor)

Given that the decompressor/EFI stub is an intrinsic part of the x86
bootable kernel image, move the command line parsing there and out of
the core kernel. This removes the need to build lib/cmdline.o in a
special way, or to use RIP-relative LEA instructions in inline asm
blocks.

This involves a new xloadflag in the setup header to indicate
that mem_encrypt=on appeared on the kernel command line.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20240227151907.387873-17-ardb+git@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-04-10 16:36:07 +02:00
..
accel accel/ivpu: Don't enable any tiles by default on VPU40xx 2024-03-01 13:35:01 +01:00
accessibility speakup: Fix 8bit characters from direct synth 2024-04-03 15:28:28 +02:00
acpi ACPICA: debugger: check status of acpi_evaluate_object() in acpi_db_walk_for_fields() 2024-04-10 16:35:42 +02:00
amba
android binder: signal epoll threads of self-work 2024-02-23 09:25:04 +01:00
ata ata: sata_mv: Fix PCI device ID table declaration compilation warning 2024-04-10 16:36:01 +02:00
atm atm: idt77252: fix a memleak in open_card_ubr0 2024-02-16 19:10:49 +01:00
auxdisplay
base driver core: Introduce device_link_wait_removal() 2024-04-10 16:36:03 +02:00
bcma
block aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts 2024-03-26 18:19:19 -04:00
bluetooth Bluetooth: qca: fix device-address endianness 2024-04-10 16:35:48 +02:00
bus bus: mhi: ep: check the correct variable in mhi_ep_register_controller() 2024-03-26 18:20:06 -04:00
cache cache: ax45mp_cache: Align end size to cache boundary in ax45mp_dma_cache_wback() 2024-03-01 13:35:08 +01:00
cdrom
cdx
char tpm,tpm_tis: Avoid warning splat at shutdown 2024-04-03 15:28:31 +02:00
clk clk: qcom: mmcc-msm8974: fix terminating of frequency table arrays 2024-04-03 15:28:23 +02:00
clocksource clocksource/drivers/arm_global_timer: Fix maximum prescaler value 2024-04-03 15:28:50 +02:00
comedi comedi: comedi_test: Prevent timers rescheduling during deletion 2024-03-26 18:20:04 -04:00
connector connector/cn_proc: revert "connector: Fix proc_event_num_listeners count not cleared" 2024-02-23 09:25:01 +01:00
counter
cpufreq cpufreq: dt: always allocate zeroed cpumask 2024-04-03 15:28:35 +02:00
cpuidle cpuidle: haltpoll: Do not enable interrupts when entering idle 2024-01-25 15:35:15 -08:00
crypto crypto: sun8i-ce - Fix use after free in unprepare 2024-04-03 15:28:40 +02:00
cxl cxl/trace: Properly initialize cxl_poison region name 2024-04-03 15:28:36 +02:00
dax
dca
devfreq PM / devfreq: Synchronize devfreq_monitor_[start/stop] 2024-02-05 20:14:15 +00:00
dio
dma dmaengine: tegra210-adma: Update dependency to ARCH_TEGRA 2024-03-26 18:19:43 -04:00
dma-buf dma-buf: Fix NULL pointer dereference in sanitycheck() 2024-04-10 16:35:40 +02:00
edac EDAC/thunderx: Fix possible out-of-bounds string access 2024-01-25 15:35:12 -08:00
eisa
extcon extcon: fix possible name leak in extcon_dev_register() 2024-02-05 20:14:31 +00:00
firewire firewire: ohci: prevent leak of left-over IRQ on unbind 2024-04-03 15:28:41 +02:00
firmware x86/boot: Move mem_encrypt= parsing to the decompressor 2024-04-10 16:36:07 +02:00
fpga
fsi
gnss
gpio gpio: cdev: fix missed label sanitizing in debounce_setup() 2024-04-10 16:36:02 +02:00
gpu drm/i915/gt: Enable only one CCS for compute workload 2024-04-10 16:36:06 +02:00
greybus
hid HID: amd_sfh: Avoid disabling the interrupt 2024-03-26 18:19:53 -04:00
hsi
hte
hv x86/hyperv: Use per cpu initial stack for vtl context 2024-03-26 18:20:06 -04:00
hwmon hwmon: (amc6821) add of_match table 2024-04-03 15:28:28 +02:00
hwspinlock
hwtracing hwtracing: hisi_ptt: Move type check to the beginning of hisi_ptt_pmu_event_init() 2024-03-26 18:20:06 -04:00
i2c i2c: i801: Avoid potential double call to gpiod_remove_lookup_table 2024-04-03 15:28:45 +02:00
i3c i3c: dw: Disable IBI IRQ depends on hot-join and SIR enabling 2024-03-26 18:20:01 -04:00
idle x86: Fix CPUIDLE_FLAG_IRQ_ENABLE leaking timer reprogram 2024-01-25 15:35:12 -08:00
iio iio: imu: inv_mpu6050: fix FIFO parsing when empty 2024-04-03 15:28:45 +02:00
infiniband RDMA/mana_ib: Fix bug in creation of dma regions 2024-03-26 18:20:02 -04:00
input Input: xpad - add additional HyperX Controller Identifiers 2024-04-03 15:28:41 +02:00
interconnect interconnect: qcom: sm8550: Enable sync_state 2024-02-23 09:24:57 +01:00
iommu iommu/dma: Force swiotlb_max_mapping_size on an untrusted device 2024-04-03 15:28:51 +02:00
ipack
irqchip irqchip/renesas-rzg2l: Prevent spurious interrupts when setting trigger type 2024-04-03 15:28:52 +02:00
isdn
leds leds: trigger: netdev: Fix kernel panic on interface rename trig notify 2024-04-03 15:28:27 +02:00
macintosh
mailbox mailbox: arm_mhuv2: Fix a bug for mhuv2_sender_interrupt 2024-02-05 20:14:31 +00:00
mcb
md dm integrity: fix out-of-range warning 2024-04-10 16:35:45 +02:00
media media: nxp: imx8-isi: Mark all crossbar sink pads as MUST_CONNECT 2024-04-03 15:28:18 +02:00
memory memory: tegra: Correct DLA client names 2024-03-26 18:19:32 -04:00
memstick
message
mfd mfd: cs42l43: Fix wrong GPIO_FN_SEL and SPI_CLK_CONFIG1 defaults 2024-03-26 18:19:55 -04:00
misc mei: me: add arrow lake point H DID 2024-04-03 15:28:43 +02:00
mmc sdhci-of-dwcmshc: disable PM runtime in dwcmshc_remove() 2024-04-03 15:28:56 +02:00
most
mtd mtd: rawnand: Constrain even more when continuous reads are enabled 2024-04-03 15:28:35 +02:00
mux
net ice: fix typo in assignment 2024-04-10 16:36:01 +02:00
nfc nfc: virtual_ncidev: Add variable to check if ndev is running 2023-12-20 17:01:59 +01:00
ntb NTB: fix possible name leak in ntb_register_device() 2024-03-26 18:19:48 -04:00
nubus
nvdimm
nvme nvme: fix reconnection fail due to reserved tag allocation 2024-03-26 18:20:09 -04:00
nvmem nvmem: meson-efuse: fix function pointer type mismatch 2024-04-03 15:28:28 +02:00
of of: module: prevent NULL pointer dereference in vsnprintf() 2024-04-10 16:36:06 +02:00
opp OPP: debugfs: Fix warning around icc_get_name() 2024-03-26 18:19:40 -04:00
parisc parisc/power: Fix power soft-off button emulation on qemu 2024-01-31 16:18:52 -08:00
parport parport: parport_serial: Add Brainboxes device IDs and geometry 2024-01-20 11:51:48 +01:00
pci PCI: hv: Fix ring buffer size calculation 2024-04-03 15:28:30 +02:00
pcmcia
peci
perf drivers/perf: riscv: Disable PERF_SAMPLE_BRANCH_* while not supported 2024-04-10 16:35:58 +02:00
phy phy: tegra: xusb: Add API to retrieve the port number of phy 2024-04-03 15:28:28 +02:00
pinctrl gpio: nomadik: fix offset bug in nmk_pmx_set() 2024-03-26 18:19:54 -04:00
platform platform/x86/intel/tpmi: Change vsec offset to u64 2024-04-03 15:28:31 +02:00
pmdomain pmdomain: qcom: rpmhpd: Drop SA8540P gfx.lvl 2024-03-26 18:19:23 -04:00
pnp PNP: ACPI: fix fortify warning 2024-02-05 20:14:15 +00:00
power power: supply: bq27xxx-i2c: Do not free non existing IRQ 2024-03-06 14:48:37 +00:00
powercap powercap: intel_rapl_tpmi: Fix System Domain probing 2024-04-03 15:28:19 +02:00
pps
ps3
ptp
pwm pwm: img: fix pwm clock lookup 2024-04-03 15:28:52 +02:00
rapidio
ras
regulator regulator: userspace-consumer: add module device table 2024-03-26 18:19:34 -04:00
remoteproc remoteproc: virtio: Fix wdg cannot recovery remote processor 2024-04-03 15:28:16 +02:00
reset reset: hisilicon: hi6220: fix Wvoid-pointer-to-enum-cast warning 2024-01-20 11:51:44 +01:00
rpmsg rpmsg: virtio: Free driver_override when rpmsg_remove() 2024-01-31 16:18:50 -08:00
rtc rtc: mt6397: select IRQ_DOMAIN instead of depending on it 2024-03-26 18:20:06 -04:00
s390 s390/qeth: handle deferred cc1 2024-04-10 16:35:42 +02:00
sbus
scsi scsi: sd: Unregister device if device_add_disk() failed in sd_probe() 2024-04-10 16:36:00 +02:00
sh
siox
slimbus slimbus: core: Remove usage of the deprecated ida_simple_xx() API 2024-04-03 15:28:28 +02:00
soc soc: fsl: qbman: Use raw spinlock for cgr_lock 2024-04-03 15:28:32 +02:00
soundwire soundwire: fix initializing sysfs for same devices on different buses 2024-01-31 16:18:47 -08:00
spi spi: mchp-pci1xxx: Fix a possible null pointer dereference in pci1xxx_spi_probe 2024-04-10 16:36:01 +02:00
spmi spmi: mediatek: Fix UAF on device remove 2024-02-05 20:14:32 +00:00
ssb
staging staging: vc04_services: fix information leak in create_component() 2024-04-03 15:28:59 +02:00
target scsi: target: pscsi: Fix bio_put() for error case 2024-03-01 13:34:59 +01:00
tc
tee tee: optee: Fix kernel panic caused by incorrect error handling 2024-04-03 15:28:44 +02:00
thermal thermal: devfreq_cooling: Fix perf state when calculate dfc res_util 2024-04-03 15:28:56 +02:00
thunderbolt thunderbolt: Fix setting the CNS bit in ROUTER_CS_5 2024-02-23 09:25:13 +01:00
tty Revert "tty: serial: simplify qcom_geni_serial_send_chunk_fifo()" 2024-04-03 15:28:43 +02:00
ufs scsi: ufs: core: Remove the ufshcd_release() in ufshcd_err_handling_prepare() 2024-03-01 13:34:55 +01:00
uio uio: Fix use-after-free in uio_open 2024-01-20 11:51:48 +01:00
usb usb: typec: ucsi: Fix race between typec_switch and role_switch 2024-04-10 16:35:54 +02:00
vdpa vdpa/mlx5: Allow CVQ size changes 2024-03-26 18:20:10 -04:00
vfio vfio/pds: Make sure migration file isn't accessed after reset 2024-04-03 15:28:59 +02:00
vhost virtio/vsock: send credit update during setting SO_RCVLOWAT 2024-01-25 15:35:26 -08:00
video backlight: lp8788: Fully initialize backlight_properties during probe 2024-03-26 18:19:56 -04:00
virt
virtio virtio: reenable config if freezing device failed 2024-04-03 15:28:36 +02:00
vlynq
w1
watchdog watchdog: stm32_iwdg: initialize default timeout 2024-03-26 18:20:02 -04:00
xen xen/events: increment refcnt only if event channel is refcounted 2024-03-26 18:20:09 -04:00
zorro
Kconfig
Makefile