mirror-linux/drivers/acpi
Ard Biesheuvel 7a106e8a1c ACPI: PRM: Check whether EFI runtime is available
commit 182da6f2b8 upstream.

The ACPI PRM address space handler calls efi_call_virt_pointer() to
execute PRM firmware code, but doing so is only permitted when the EFI
runtime environment is available. Otherwise, such calls are guaranteed
to result in a crash, and must therefore be avoided.

Given that the EFI runtime services may become unavailable after a crash
occurring in the firmware, we need to check this each time the PRM
address space handler is invoked. If the EFI runtime services were not
available at registration time to being with, don't install the address
space handler at all.

Fixes: cefc7ca462 ("ACPI: PRM: implement OperationRegion handler for the PlatformRtMechanism subtype")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-24 07:24:35 +01:00
..
acpica ACPICA: Fix error code path in acpi_ds_call_control_method() 2022-12-31 13:32:57 +01:00
apei ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init() 2022-10-13 20:40:09 +02:00
arm64 iommu: Add gfp parameter to iommu_alloc_resv_region 2022-10-21 10:49:32 +02:00
dptf ACPI: DPTF: Drop stale link from Kconfig help 2022-09-28 17:26:25 +02:00
nfit cxl for 5.19 2022-05-27 21:24:19 -07:00
numa ACPI: HMAT: Fix initiator registration for single-initiator systems 2022-11-18 23:55:40 -08:00
pmic
x86 ACPI: x86: s2idle: Stop using AMD specific codepath for Rembrandt+ 2023-01-04 11:29:00 +01:00
Kconfig platform-drivers-x86 for v6.1-1 2022-10-05 10:38:24 -07:00
Makefile ACPI: processor: Split out thermal initialization from ACPI PSS 2022-06-29 18:51:22 +02:00
ac.c ACPI: AC: Remove the leftover struct acpi_ac_bl 2022-09-24 18:22:59 +02:00
acpi_adxl.c
acpi_amba.c Merge branches 'acpi-ec', 'acpi-ac', 'acpi-fan', 'acpi-video' and 'acpi-amba' 2022-10-03 19:59:47 +02:00
acpi_apd.c ACPI: APD: Use the helper acpi_dev_get_memory_resources() 2022-09-10 18:22:24 +02:00
acpi_cmos_rtc.c
acpi_configfs.c
acpi_dbg.c
acpi_extlog.c ACPI: extlog: Handle multiple records 2022-10-13 20:43:10 +02:00
acpi_fpdt.c ACPI: tables: FPDT: Don't call acpi_os_map_memory() on invalid phys address 2022-09-10 18:18:34 +02:00
acpi_ipmi.c
acpi_lpat.c
acpi_lpit.c Revert "ACPI / PM: LPIT: Register sysfs attributes based on FADT" 2022-07-15 20:04:07 +02:00
acpi_lpss.c Merge branch 'acpi-uid' 2022-10-03 20:09:22 +02:00
acpi_memhotplug.c
acpi_pad.c
acpi_pcc.c ACPI: PCC: Fix unintentional integer overflow 2022-10-26 13:33:31 +02:00
acpi_platform.c Merge branches 'acpi-scan', 'acpi-bus' and 'acpi-platform' 2022-09-30 20:28:22 +02:00
acpi_pnp.c
acpi_processor.c
acpi_tad.c
acpi_video.c ACPI: video: Don't enable fallback path for creating ACPI backlight by default 2023-01-12 12:02:40 +01:00
acpi_watchdog.c
battery.c
bgrt.c
blacklist.c
bus.c Merge branches 'acpi-misc', 'acpi-tools' and 'acpi-docs' 2022-10-03 20:03:49 +02:00
button.c
container.c ACPI: container: Use acpi_dev_for_each_child() 2022-06-20 20:33:05 +02:00
cppc_acpi.c ACPI: CPPC: Disable FIE if registers in PCC regions 2022-09-24 18:43:46 +02:00
custom_method.c
debugfs.c
device_pm.c Merge branches 'acpi-apei', 'acpi-wakeup', 'acpi-reboot' and 'acpi-thermal' 2022-10-10 18:11:11 +02:00
device_sysfs.c ACPI: bus: Drop driver member of struct acpi_device 2022-06-30 14:11:21 +02:00
dock.c
ec.c ACPI: EC: Add quirk for the HP Pavilion Gaming 15-cx0041ur 2022-12-31 13:32:57 +01:00
ec_sys.c
event.c
evged.c
fan.h ACPI: DPTF: Support Meteor Lake 2022-05-25 15:37:07 +02:00
fan_attr.c
fan_core.c ACPI: fan: Reorder symbols to get rid of a few forward declarations 2022-09-24 18:46:52 +02:00
glue.c ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops 2023-01-18 11:58:11 +01:00
hed.c
internal.h ACPI: scan: Eliminate __acpi_device_add() 2022-08-23 18:19:27 +02:00
ioapic.c
irq.c ACPI: irq: Fix some kernel-doc issues 2022-12-31 13:31:55 +01:00
nvs.c
osi.c ACPI: OSI: Remove Linux-HPI-Hybrid-Graphics _OSI string 2022-08-25 20:18:17 +02:00
osl.c
pci_irq.c
pci_link.c ACPI/PCI: Remove useless NULL pointer checks 2022-07-27 21:21:27 +02:00
pci_mcfg.c PCI: loongson: Add ACPI init support 2022-07-14 15:25:36 -05:00
pci_root.c ACPI: PCI: Fix device reference counting in acpi_get_pci_dev() 2022-10-19 13:28:30 +02:00
pci_slot.c
pfr_telemetry.c ACPI: pfr_telemetry: use ACPI_FREE() to free acpi_object 2022-12-31 13:31:57 +01:00
pfr_update.c ACPI: pfr_update: use ACPI_FREE() to free acpi_object 2022-12-31 13:31:57 +01:00
platform_profile.c
power.c ACPI: scan: Eliminate __acpi_device_add() 2022-08-23 18:19:27 +02:00
pptt.c ACPI: PPTT: Leave the table mapped for the runtime usage 2022-07-22 10:04:43 +02:00
prmt.c ACPI: PRM: Check whether EFI runtime is available 2023-01-24 07:24:35 +01:00
proc.c
processor_core.c
processor_driver.c ACPI: processor: Split out thermal initialization from ACPI PSS 2022-06-29 18:51:22 +02:00
processor_idle.c ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value 2022-12-31 13:32:57 +01:00
processor_pdc.c
processor_perflib.c
processor_thermal.c ACPI: processor: Remove freq Qos request for all CPUs 2022-08-23 18:09:06 +02:00
processor_throttling.c
property.c Merge branch 'acpi-dev' 2022-09-30 20:05:16 +02:00
reboot.c
resource.c ACPI: resource: Add Asus ExpertBook B2502 to Asus quirks 2023-01-04 11:28:50 +01:00
sbs.c ACPI: Drop parent field from struct acpi_device 2022-08-24 20:55:24 +02:00
sbshc.c ACPI: Drop parent field from struct acpi_device 2022-08-24 20:55:24 +02:00
sbshc.h
scan.c ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops 2023-01-18 11:58:11 +01:00
sleep.c PM: ACPI: reboot: Reinstate S5 for reboot 2022-10-04 15:59:36 +02:00
sleep.h ACPI: s2idle: Add a new ->check() callback for platform_s2idle_ops 2022-09-09 17:37:40 +02:00
spcr.c
sysfs.c
tables.c
thermal.c ACPI: thermal: Drop some redundant code 2022-10-05 17:51:52 +02:00
tiny-power-button.c
utils.c Merge branch 'acpi-uid' 2022-10-03 20:09:22 +02:00
video_detect.c ACPI: video: Allow selecting NVidia-WMI-EC or Apple GMUX backlight from the cmdline 2023-01-18 11:58:15 +01:00
viot.c iommu/dma: Make header private 2022-09-09 09:26:22 +02:00
wakeup.c