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linux/drivers/acpi
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Juergen Gross fe0ba8c23f acpi: Fix suspend with Xen PV 
Commit f1e5250094 ("x86/boot: Skip realmode init code when running as
Xen PV guest") missed one code path accessing real_mode_header, leading
to dereferencing NULL when suspending the system under Xen:

    [  348.284004] PM: suspend entry (deep)
    [  348.289532] Filesystems sync: 0.005 seconds
    [  348.291545] Freezing user space processes ... (elapsed 0.000 seconds) done.
    [  348.292457] OOM killer disabled.
    [  348.292462] Freezing remaining freezable tasks ... (elapsed 0.104 seconds) done.
    [  348.396612] printk: Suspending console(s) (use no_console_suspend to debug)
    [  348.749228] PM: suspend devices took 0.352 seconds
    [  348.769713] ACPI: EC: interrupt blocked
    [  348.816077] BUG: kernel NULL pointer dereference, address: 000000000000001c
    [  348.816080] #PF: supervisor read access in kernel mode
    [  348.816081] #PF: error_code(0x0000) - not-present page
    [  348.816083] PGD 0 P4D 0
    [  348.816086] Oops: 0000 [#1] PREEMPT SMP NOPTI
    [  348.816089] CPU: 0 PID: 6764 Comm: systemd-sleep Not tainted 6.1.3-1.fc32.qubes.x86_64 #1
    [  348.816092] Hardware name: Star Labs StarBook/StarBook, BIOS 8.01 07/03/2022
    [  348.816093] RIP: e030:acpi_get_wakeup_address+0xc/0x20

Fix that by adding an optional acpi callback allowing to skip setting
the wakeup address, as in the Xen PV case this will be handled by the
hypervisor anyway.

Fixes: f1e5250094 ("x86/boot: Skip realmode init code when running as Xen PV guest")
Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/all/20230117155724.22940-1-jgross%40suse.com
2023-01-19 13:52:05 -08:00
..
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_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
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
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
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
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: Change handler_addr type to void pointer 2022-06-30 17:35:45 +02:00
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
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 acpi: Fix suspend with Xen PV 2023-01-19 13:52:05 -08:00
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