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linux/drivers/acpi
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Ard Biesheuvel 182da6f2b8 ACPI: PRM: Check whether EFI runtime is available 
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>
2023-01-18 19:58:15 +01:00
..
acpica ACPICA: Allow address_space_handler Install and _REG execution as 2 separate steps 2022-12-08 17:38:28 +01:00
apei treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
arm64 ACPI: APMT: Fix kerneldoc and indentation 2022-11-15 13:09:44 +00:00
dptf ACPI: DPTF: Drop stale link from Kconfig help 2022-09-28 17:26:25 +02:00
nfit cxl for 6.2 2022-12-12 13:55:31 -08:00
numa MM patches for 6.2-rc1. 2022-12-13 19:29:45 -08:00
pmic ACPI: PMIC: xpower: Fix _TMP ACPI errors 2021-12-08 15:34:57 +01:00
x86 ACPI: x86: s2idle: Stop using AMD specific codepath for Rembrandt+ 2022-12-22 17:39:31 +01:00
ac.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
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: cmos_rtc: Using pr_fmt() and remove PREFIX 2021-06-07 15:36:45 +02:00
acpi_configfs.c ACPI: configfs: Make get_header() to return error pointer 2021-07-16 19:20:28 +02:00
acpi_dbg.c
acpi_extlog.c ACPI: extlog: Handle multiple records 2022-10-13 20:43:10 +02:00
acpi_ffh.c ACPI: Implement a generic FFH Opregion handler 2022-11-14 19:09:07 +01:00
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: IPMI: replace usage of found with dedicated list iterator variable 2022-03-25 18:01:40 +01:00
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: memhotplug: use a single static memory group for a single memory device 2021-09-08 11:50:23 -07:00
acpi_pad.c Merge branches 'acpi-fan', 'acpi-pcc', 'acpi-misc' and 'pnp' 2022-12-12 15:24:15 +01:00
acpi_pcc.c ACPI: PCC: Setup PCC Opregion handler only if platform interrupt is available 2022-11-23 19:06:56 +01:00
acpi_platform.c Merge branches 'acpi-scan', 'acpi-bus' and 'acpi-platform' 2022-09-30 20:28:22 +02:00
acpi_pnp.c ACPI: PNP: remove duplicated BRI0A49 and BDP3336 entries 2021-09-24 18:12:15 +02:00
acpi_processor.c ACPI: processor: Replace deprecated CPU-hotplug functions 2021-08-04 20:25:54 +02:00
acpi_tad.c
acpi_video.c ACPI: video: Don't enable fallback path for creating ACPI backlight by default 2022-12-22 17:26:42 +01:00
acpi_watchdog.c
battery.c ACPI updates for 6.2-rc1 2022-12-12 13:38:17 -08:00
bgrt.c ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines 2022-04-22 16:55:33 +02:00
blacklist.c ACPI: blacklist: Unify the message printing 2021-06-07 15:36:45 +02:00
bus.c ACPI updates for 6.2-rc1 2022-12-12 13:38:17 -08:00
button.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
container.c ACPI: container: Use acpi_dev_for_each_child() 2022-06-20 20:33:05 +02:00
cppc_acpi.c ACPI: use sysfs_emit() instead of scnprintf() 2022-12-02 20:24:55 +01:00
custom_method.c ACPI: custom_method: fix a possible memory leak 2021-04-28 19:17:54 +02:00
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 ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
ec.c Merge branch 'acpi-ec' 2022-12-15 18:38:22 +01:00
ec_sys.c ACPI: EC: Mark the ec_sys write_support param as module_param_hw() 2021-12-01 20:19:30 +01:00
event.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
evged.c
fan.h ACPI: DPTF: Support Meteor Lake 2022-05-25 15:37:07 +02:00
fan_attr.c ACPI: fan: Convert to use sysfs_emit_at() API 2022-12-06 12:44:14 +01:00
fan_core.c ACPI: fan: Bail out if extract package failed 2022-11-23 19:31:57 +01:00
glue.c ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops 2023-01-10 20:23:48 +01:00
hed.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
internal.h ACPI: EC: Fix EC address space handler unregistration 2022-12-08 17:42:12 +01:00
ioapic.c
irq.c ACPI: irq: Fix some kernel-doc issues 2022-11-10 20:21:35 +01:00
Kconfig ACPI updates for 6.2-rc1 2022-12-12 13:38:17 -08:00
Makefile ACPI: Implement a generic FFH Opregion handler 2022-11-14 19:09:07 +01:00
nvs.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
osi.c ACPI: OSI: Remove Linux-HPI-Hybrid-Graphics _OSI string 2022-08-25 20:18:17 +02:00
osl.c ACPI: OSL: Remove the helper for deactivating memory region 2022-04-27 20:44:55 +02:00
pci_irq.c ACPI / PCI: fix LPIC IRQ model default PCI IRQ polarity 2022-11-26 12:57:18 +00:00
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 cxl/acpi: Set ACPI's CXL _OSC to indicate RCD mode support 2022-12-05 10:32:26 -08:00
pci_slot.c
pfr_telemetry.c ACPI: pfr_telemetry: use ACPI_FREE() to free acpi_object 2022-11-23 19:23:25 +01:00
pfr_update.c iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
platform_profile.c ACPI: platform-profile: call sysfs_notify() from platform_profile_store() 2021-08-16 18:32:02 +02:00
power.c ACPI: PM: Print full name path while adding power resource 2022-11-10 20:43:30 +01:00
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 2023-01-18 19:58:15 +01:00
proc.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
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: Drop unnecessary statements and parens 2022-12-07 18:07:15 +01:00
processor_pdc.c
processor_perflib.c ACPI: processor: perflib: Adjust acpi_processor_notify_smm() return value 2022-12-07 18:09:39 +01:00
processor_thermal.c ACPI: processor: Remove freq Qos request for all CPUs 2022-08-23 18:09:06 +02:00
processor_throttling.c ACPI: processor: throttling: remove variable count 2022-10-28 19:02:45 +02:00
property.c Merge branch 'acpi-dev' 2022-09-30 20:05:16 +02:00
reboot.c ACPI: reboot: Unify the message printing 2021-06-07 15:36:46 +02:00
resource.c ACPI: resource: Skip IRQ override on Asus Expertbook B2402CBA 2023-01-10 20:16:10 +01:00
sbs.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
sbshc.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
sbshc.h
scan.c ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops 2023-01-10 20:23:48 +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 ACPI: SPCR: Add support for NVIDIA 16550-compatible port subtype 2022-04-13 20:37:29 +02:00
sysfs.c ACPI: sysfs: use sysfs_emit() to instead of scnprintf() 2022-11-10 20:24:49 +01:00
tables.c ACPI: tables: Fix the stale comments for acpi_locate_initial_tables() 2022-11-10 20:15:55 +01:00
thermal.c Merge branches 'acpi-scan', 'acpi-bus', 'acpi-tables' and 'acpi-sysfs' 2022-12-12 14:55:44 +01:00
tiny-power-button.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
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 2023-01-10 20:20:51 +01:00
viot.c iommu/dma: Make header private 2022-09-09 09:26:22 +02:00
wakeup.c