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ad5a449b70
linux/drivers/acpi
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Dexuan Cui ad5a449b70 ACPI: PM: Make acpi_sleep_state_supported() non-static 
With some upcoming patches to save/restore the Hyper-V drivers related
states, a Linux VM running on Hyper-V will be able to hibernate. When
a Linux VM hibernates, unluckily we must disable the memory hot-add/remove
and balloon up/down capabilities in the hv_balloon driver
(drivers/hv/hv_balloon.c), because these can not really work according to
the design of the related back-end driver on the host.

By default, Hyper-V does not enable the virtual ACPI S4 state for a VM;
on recent Hyper-V hosts, the administrator is able to enable the virtual
ACPI S4 state for a VM, so we hope to use the presence of the virtual ACPI
S4 state as a hint for hv_balloon to disable the aforementioned
capabilities. In this way, hibernation will work more reliably, from the
user's perspective.

By marking acpi_sleep_state_supported() non-static, we'll be able to
implement a hv_is_hibernation_supported() API in the always-built-in
module arch/x86/hyperv/hv_init.c, and the API will be called by hv_balloon.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-07-06 09:49:22 +02:00
..
acpica Merge branch 'acpica' 2019-05-06 10:49:01 +02:00
apei Merge branch 'acpi-apei' 2019-03-04 11:16:35 +01:00
arm64 Second round of arm64 fixes for -rc2 2019-05-24 11:03:26 -07:00
dptf treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
hmat treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
nfit treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
pmic Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
x86 ACPI / x86: Make PWM2 device always present at Lenovo Yoga Book 2019-02-15 00:19:58 +01:00
ac.c ACPI updates for 4.18-rc1 2018-06-05 10:08:27 -07:00
acpi_adxl.c ACPI/ADXL: Add address translation interface using an ACPI DSM 2018-10-16 10:03:00 +02:00
acpi_amba.c
acpi_apd.c clk: Remove io.h from clk-provider.h 2019-05-15 13:21:37 -07:00
acpi_cmos_rtc.c
acpi_configfs.c ACPICA: Rename nameseg length macro/define for clarity 2019-04-09 11:24:48 +02:00
acpi_dbg.c ACPI: Fix comment typos 2019-03-26 22:33:43 +01:00
acpi_extlog.c ACPI: Switch to use generic guid_t in acpi_evaluate_dsm() 2017-06-07 12:20:49 +02:00
acpi_ipmi.c acpi:ipmi: Convert ipmi_user_t to struct ipmi_user * 2018-09-18 16:15:33 -05:00
acpi_lpat.c ACPI: Fix comment typos 2019-03-26 22:33:43 +01:00
acpi_lpit.c ACPI / LPIT: Correct LPIT end address for lpit_process() 2019-05-28 19:30:27 +02:00
acpi_lpss.c ACPI / LPSS: Use acpi_lpss_* instead of acpi_subsys_* functions for hibernate 2019-04-18 16:46:45 +02:00
acpi_memhotplug.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12 2019-05-21 11:28:45 +02:00
acpi_pad.c ACPI: Add Hygon Dhyana support 2018-09-27 18:29:00 +02:00
acpi_platform.c ACPI / platform: Add SMB0001 HID to forbidden_id_list 2018-11-21 13:30:13 +01:00
acpi_pnp.c
acpi_processor.c ACPI / processor: Fix the return value of acpi_processor_ids_walk() 2018-10-04 08:58:32 +02:00
acpi_tad.c ACPI: TAD: Add low-level support for real time capability 2018-10-18 09:11:53 +02:00
acpi_video.c ACPI / video: Extend chassis-type detection with a "Lunch Box" check 2019-02-13 23:38:34 +01:00
acpi_watchdog.c ACPI / watchdog: Prefer iTCO_wdt always when WDAT table uses RTC SRAM 2018-05-24 10:52:49 +02:00
battery.c ACPI / battery: Do not export energy_full[_design] on devices without full_charge_capacity 2018-08-09 10:49:35 +02:00
bgrt.c ACPI: BGRT: constify attribute_group structures 2017-07-04 22:15:20 +02:00
blacklist.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
bus.c ACPI: use different default debug value than ACPICA 2019-03-25 10:45:59 +01:00
button.c ACPI: button: reinitialize button state upon resume 2019-04-12 10:29:01 +02:00
cm_sbs.c
container.c
cppc_acpi.c Merge branches 'acpi-scan', 'acpi-tables', 'acpi-misc' and 'acpi-pm' 2019-05-06 10:49:39 +02:00
custom_method.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
debugfs.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
device_pm.c ACPI: PM: Allow transitions to D0 to occur in special cases 2019-06-27 12:30:00 +02:00
device_sysfs.c ACPI: bus: change _ADR representation to 64 bits 2019-05-10 12:30:45 +02:00
dock.c ACPI: Mark expected switch fall-throughs 2017-11-09 00:55:16 +01:00
ec_sys.c ACPI: no need to check return value of debugfs_create functions 2019-01-22 19:45:52 +01:00
ec.c Revert "ACPI / EC: Remove old CLEAR_ON_RESUME quirk" 2019-02-01 12:56:49 +01:00
event.c ACPI: event: replace strcpy() by strscpy() 2019-04-23 10:54:26 +02:00
evged.c ACPI: GED: unregister interrupts during shutdown 2017-12-16 03:05:37 +01:00
fan.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
glue.c ACPI / glue: Add acpi_platform_notify() function 2018-11-26 18:19:11 +01:00
hed.c
internal.h ACPI: EC: Clean up probing for early EC 2019-01-29 11:01:30 +01:00
ioapic.c ACPI: fix whitespace in pr_fmt() to align log entries 2017-06-22 02:18:20 +02:00
irq.c ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting 2019-02-24 21:12:01 +01:00
Kconfig acpi/hmat: Parse and report heterogeneous memory 2019-04-04 18:41:20 +02:00
Makefile acpi/hmat: Parse and report heterogeneous memory 2019-04-04 18:41:20 +02:00
numa.c acpi: Create subtable parsing infrastructure 2019-04-04 18:41:12 +02:00
nvs.c
osi.c ACPI / OSI: Add OEM _OSI string to enable dGPU direct output 2018-12-18 11:06:05 +01:00
osl.c ACPICA: Remove PCI bits from ACPICA when CONFIG_PCI is unset 2018-12-20 10:19:49 +01:00
pci_irq.c
pci_link.c ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting 2019-02-24 21:12:01 +01:00
pci_mcfg.c PCI: al: Add Amazon Annapurna Labs PCIe host controller driver 2019-04-25 16:33:07 -05:00
pci_root.c PCI/ACPI: Advertise _HPX Type 3 support via _OSC 2019-04-23 16:38:16 -05:00
pci_slot.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
power.c ACPI: Fix comment typos 2019-03-26 22:33:43 +01:00
pptt.c ACPI: Fix comment typos 2019-03-26 22:33:43 +01:00
proc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
processor_core.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
processor_driver.c ACPI: processor: use dev_dbg() instead of dev_warn() when CPPC probe failed 2017-07-27 01:51:06 +02:00
processor_idle.c ACPI / processor: Set P_LVL{2,3} idle state descriptions 2019-02-18 11:29:13 +01:00
processor_pdc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
processor_perflib.c cpufreq: intel_pstate: Driver-specific handling of _PPC updates 2019-04-01 23:43:05 +02:00
processor_thermal.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
processor_throttling.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
property.c ACPI / property: fix handling of data_nodes in acpi_get_next_subnode() 2019-05-01 10:06:08 +02:00
reboot.c ACPI: Allow CONFIG_PCI to be unset for reboot 2018-12-20 10:19:49 +01:00
resource.c ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting 2019-02-24 21:12:01 +01:00
sbs.c ACPI / SBS: Fix GPE storm on recent MacBookPro's 2018-10-08 08:41:35 +02:00
sbshc.c ACPI / SBS: Fix rare oops when removing modules 2018-10-08 08:41:35 +02:00
sbshc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scan.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
sleep.c ACPI: PM: Make acpi_sleep_state_supported() non-static 2019-07-06 09:49:22 +02:00
sleep.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spcr.c ACPI: Fix comment typos 2019-03-26 22:33:43 +01:00
sysfs.c ACPICA: Rename nameseg length macro/define for clarity 2019-04-09 11:24:48 +02:00
tables.c Driver core/kobject patches for 5.2-rc1 2019-05-07 13:01:40 -07:00
thermal.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
utils.c ACPI / utils: Remove deprecated function since no user left 2019-04-01 11:00:16 +02:00
video_detect.c Merge branches 'acpi-utils', 'acpi-video', 'acpi-soc' and 'acpi-button' 2019-05-06 10:50:08 +02:00
wakeup.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00