Group all of the declarations of functions that belong to the ACPI
processor idle driver together in one place in processor.h.
While at it, drop the unnecessary extern modifier from the declaraions
of two functions.
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20251223100914.2407069-6-lihuisong@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Notice that acpi_processor_power_init() and acpi_processor_power_exit()
don't need to return any values because their callers don't check them
anyway, so redefine those functions as void.
While at it, rearrange the code in acpi_processor_power_init() to
reduce the indentation level, get rid of a redundant local variable
in that function, and rephrase a code comment in it.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20251223100914.2407069-5-lihuisong@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Empty stubs are defined in processor.h for some functions provided by
the ACPI processor idle driver, but those functions are only used in
the main ACPI processor driver which requires the ACPI processor idle
driver to be present (selecting CONFIG_ACPI_PROCESSOR causes
CONFIG_ACPI_PROCESSOR_IDLE to be selected too automatically).
This means that the empty stubs in question are not really necessary and
if both CONFIG_ACPI_PROCESSOR and CONFIG_ACPI_PROCESSOR_IDLE are unset,
the compiler complains that they are defined, but not used. Drop them
to get rid of the compiler warning.
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20251223100914.2407069-3-lihuisong@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Currently, the ACPI idle driver is registered from within a CPU
hotplug callback. Although this didn't cause any functional issues,
this is questionable and confusing. And it is better to register
the cpuidle driver when all of the CPUs have been brought up.
So add a new function to initialize acpi_idle_driver based on the
power management information of an available CPU and register cpuidle
driver in acpi_processor_driver_init().
This commit has four changes under the commit 7a8c994cbb (ACPI:
processor: idle: Optimize ACPI idle driver registration):
1) move acpi_processor_register_idle_driver() ahead of the
driver_register().
2) add acpi_processor_cstate_first_run_checks() before calling
acpi_processor_get_power_info().
3) squash the commit 9d68320b2b (ACPI: processor: idle: Fix
function defined but not used warning) into this change.
4) use for_each_possible_cpu(cpu) to scan all possible cpus.
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
[ rjw: New comment edits, changelog tweak ]
Link: https://patch.msgid.link/20251223100914.2407069-2-lihuisong@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
In ACPI Global System Interrupts (GSIs) are described using a 32-bit
value.
ACPI/PCI legacy interrupts (INTx) parsing code treats GSIs as 'int',
which poses issues if the GSI interrupt value is a 32-bit value with the
MSB set (as required in some interrupt configurations - eg ARM64 GICv5
systems) because acpi_pci_link_allocate_irq() treats a negative gsi
return value as a failed GSI allocation (and acpi_irq_get_penalty()
would trigger an out-of-bounds array dereference if the 'irq' param is
a negative value).
Fix ACPI/PCI legacy INTx parsing by converting variables representing
GSIs from 'int' to 'u32' bringing the code in line with the ACPI
specification and fixing the current parsing issue.
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260105101705.36703-1-lpieralisi@kernel.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Revert commit 7a8c994cbb ("ACPI: processor: idle: Optimize ACPI idle
driver registration") because it is reported to introduce a cpuidle
regression leading to a kernel crash on a platform using the ACPI idle
driver.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reported-by: Borislav Petkov <bp@alien8.de>
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
Closes: https://lore.kernel.org/lkml/20251124200019.GIaSS5U9HhsWBotrQZ@fat_crate.local/
Revert commit 5020d05b34 ("ACPI: processor: Remove unused empty stubs
of some functions") because it depends on a problematic one.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Revert commit bdf780fbce ("ACPI: processor: idle: Rearrange declarations
in header file") because it depends on a problematic one.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Revert commit fbd401e95e ("ACPI: processor: idle: Redefine two
functions as void") because it depends on a problematic one.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Revert commit 559f2eacc8 ACPI: processor: Do not expose global variable
acpi_idle_driver" because it depends on a problematic one.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- Make cpufreq drivers setting the default CPU transition latency to
CPUFREQ_ETERNAL specify a proper default transition latency value
instead which addresses a regression introduced during the 6.6 cycle
that broke CPUFREQ_ETERNAL handling (Rafael Wysocki)
- Make the cpufreq CPPC driver use a proper transition delay value
when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency() to
indicate an error condition (Rafael Wysocki)
- Make cppc_get_transition_latency() return a negative error code to
indicate error conditions instead of using CPUFREQ_ETERNAL for this
purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael
Wysocki, Gopi Krishna Menon)
- Fix device leak in the mediatek cpufreq driver (Johan Hovold)
- Set target frequency on all CPUs sharing a policy during frequency
updates in the tegra186 cpufreq driver and make it initialize all
cores to max frequencies (Aaron Kling)
- Rust cpufreq helper cleanup (Thorsten Blum)
- Make pm_runtime_put*() family of functions return 1 when the
given device is already suspended which is consistent with the
documentation (Brian Norris)
- Add basic kunit tests for runtime PM API contracts and update return
values in kerneldoc comments for the runtime PM API (Brian Norris,
Dan Carpenter)
- Add auto-cleanup macros for runtime PM "resume and get" and "get
without resume" operations, use one of them in the PCI core and
drop the existing "free" macro introduced for similar purpose, but
somewhat cumbersome to use (Rafael Wysocki)
- Make the core power management code avoid waiting on device links
marked as SYNC_STATE_ONLY which is consistent with the handling of
those device links elsewhere (Pin-yen Lin)
-----BEGIN PGP SIGNATURE-----
iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmjk8hUSHHJqd0Byand5
c29ja2kubmV0AAoJEO5fvZ0v1OO1PtgH/0AwdSCX8uI44n/EnyjLlQFWOdNSpXI4
zAIReNLPP0skWrNwf5ivHYKPEWSeo0o0OjHiCjdTCC3uT8FxCLmjjlPS43zhhHem
41YQFRJb6GpwD86Vog25q5GSPOQORvRGYV+ZGlMesah0cE4qh4LxgVSNtftm9z7b
CjMFOeFEAAHFNGEEX4U2/GE+PFdbBGMjSDSfyLazKAKjZS436SOGvpP7NUTt0m9C
kxO2JLJuQXph5lqyzDRAUu1yOseEwM/f6Y5wWs1z/T5GeIacub/KypZlxhsjWALf
VxdXfvvLehidS747pxOzXPFhP8sXw1a4XdBNqlVGi/YjF7S9OuAxRMg=
=RfuO
-----END PGP SIGNATURE-----
Merge tag 'pm-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These are cpufreq fixes and cleanups on top of the material merged
previously, a power management core code fix and updates of the
runtime PM framework including unit tests, documentation updates and
introduction of auto-cleanup macros for runtime PM "resume and get"
and "get without resuming" operations.
Specifics:
- Make cpufreq drivers setting the default CPU transition latency to
CPUFREQ_ETERNAL specify a proper default transition latency value
instead which addresses a regression introduced during the 6.6
cycle that broke CPUFREQ_ETERNAL handling (Rafael Wysocki)
- Make the cpufreq CPPC driver use a proper transition delay value
when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency()
to indicate an error condition (Rafael Wysocki)
- Make cppc_get_transition_latency() return a negative error code to
indicate error conditions instead of using CPUFREQ_ETERNAL for this
purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael
Wysocki, Gopi Krishna Menon)
- Fix device leak in the mediatek cpufreq driver (Johan Hovold)
- Set target frequency on all CPUs sharing a policy during frequency
updates in the tegra186 cpufreq driver and make it initialize all
cores to max frequencies (Aaron Kling)
- Rust cpufreq helper cleanup (Thorsten Blum)
- Make pm_runtime_put*() family of functions return 1 when the given
device is already suspended which is consistent with the
documentation (Brian Norris)
- Add basic kunit tests for runtime PM API contracts and update
return values in kerneldoc comments for the runtime PM API (Brian
Norris, Dan Carpenter)
- Add auto-cleanup macros for runtime PM "resume and get" and "get
without resume" operations, use one of them in the PCI core and
drop the existing "free" macro introduced for similar purpose, but
somewhat cumbersome to use (Rafael Wysocki)
- Make the core power management code avoid waiting on device links
marked as SYNC_STATE_ONLY which is consistent with the handling of
those device links elsewhere (Pin-yen Lin)"
* tag 'pm-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
docs/zh_CN: Fix malformed table
docs/zh_TW: Fix malformed table
PM: runtime: Fix error checking for kunit_device_register()
PM: runtime: Introduce one more usage counter guard
cpufreq: Drop unused symbol CPUFREQ_ETERNAL
ACPI: CPPC: Do not use CPUFREQ_ETERNAL as an error value
cpufreq: CPPC: Avoid using CPUFREQ_ETERNAL as transition delay
cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency
PM: runtime: Drop DEFINE_FREE() for pm_runtime_put()
PCI/sysfs: Use runtime PM guard macro for auto-cleanup
PM: runtime: Add auto-cleanup macros for "resume and get" operations
cpufreq: tegra186: Initialize all cores to max frequencies
cpufreq: tegra186: Set target frequency for all cpus in policy
rust: cpufreq: streamline find_supply_names
cpufreq: mediatek: fix device leak on probe failure
PM: sleep: Do not wait on SYNC_STATE_ONLY device links
PM: runtime: Update kerneldoc return codes
PM: runtime: Make put{,_sync}() return 1 when already suspended
PM: runtime: Add basic kunit tests for API contracts
Misc changes:
- Use str_plural() instead of open code for emitting strings.
- Use str_enabled_disabled() instead of ternary operator
- Fix emit of type resource_size_t argument for validate_region_offset()
- Typo fixup in CXL driver-api documentation
- Rename CFMWS coherency restriction defines
- Add convention doc describe dealing with x86 low memory hole and CXL
Poison Inject support series:
- Move hpa_to_spa callback to new reoot decoder ops structure
- Define a SPA to HPA callback for interleave calculation with XOR math
- Add support for SPA to DPA address translation with XOR
- Add locked variants of poison inject and clear functions
- Add inject and clear poison support by region offset
CXL access coordinates update fix series:
- A comment update for hotplug memory callback prority defines
- Add node_update_perf_attrs() for updating perf attrs on a node
- Update cxl_access_coordinates() to use the new node update function
- Remove hmat_update_target_coordinates() and related code
CXL delayed downstream port enumeration and initialization series
- Add helper to detect top of CXL device topology and remove open coding
- Add helper to delete single dport
- Add a cached copy of target_map to cxl_decoder
- Refactor decoder setup to reduce cxl_test burden
- Defer dport allocation for switch ports
- Add mock version of devm_cxl_add_dport_by_dev() for cxl_test
- Adjust the mock version of devm_cxl_switch_port_decoders_setup() due to
cxl core usage
- Setup target_map for cxl_test decoder initialization
- Change SSLBIS handler to handle single dport
- Move port register setup to when first dport appears
-----BEGIN PGP SIGNATURE-----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=VYmp
-----END PGP SIGNATURE-----
Merge tag 'cxl-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL updates from Dave Jiang:
"The changes include adding poison injection support, fixing CXL access
coordinates when onlining CXL memory, and delaing the enumeration of
downstream switch ports for CXL hierarchy to ensure that the CXL link
is established at the time of enumeration to address a few issues
observed on AMD and Intel platforms.
Misc changes:
- Use str_plural() instead of open code for emitting strings.
- Use str_enabled_disabled() instead of ternary operator
- Fix emit of type resource_size_t argument for
validate_region_offset()
- Typo fixup in CXL driver-api documentation
- Rename CFMWS coherency restriction defines
- Add convention doc describe dealing with x86 low memory hole
and CXL
Poison Inject support:
- Move hpa_to_spa callback to new reoot decoder ops structure
- Define a SPA to HPA callback for interleave calculation with
XOR math
- Add support for SPA to DPA address translation with XOR
- Add locked variants of poison inject and clear functions
- Add inject and clear poison support by region offset
CXL access coordinates update fix:
- A comment update for hotplug memory callback prority defines
- Add node_update_perf_attrs() for updating perf attrs on a node
- Update cxl_access_coordinates() to use the new node update function
- Remove hmat_update_target_coordinates() and related code
CXL delayed downstream port enumeration and initialization:
- Add helper to detect top of CXL device topology and remove
open coding
- Add helper to delete single dport
- Add a cached copy of target_map to cxl_decoder
- Refactor decoder setup to reduce cxl_test burden
- Defer dport allocation for switch ports
- Add mock version of devm_cxl_add_dport_by_dev() for cxl_test
- Adjust the mock version of devm_cxl_switch_port_decoders_setup()
due to cxl core usage
- Setup target_map for cxl_test decoder initialization
- Change SSLBIS handler to handle single dport
- Move port register setup to when first dport appears"
* tag 'cxl-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (25 commits)
cxl: Move port register setup to when first dport appear
cxl: Change sslbis handler to only handle single dport
cxl/test: Setup target_map for cxl_test decoder initialization
cxl/test: Adjust the mock version of devm_cxl_switch_port_decoders_setup()
cxl/test: Add mock version of devm_cxl_add_dport_by_dev()
cxl: Defer dport allocation for switch ports
cxl/test: Refactor decoder setup to reduce cxl_test burden
cxl: Add a cached copy of target_map to cxl_decoder
cxl: Add helper to delete dport
cxl: Add helper to detect top of CXL device topology
cxl: Documentation/driver-api/cxl: Describe the x86 Low Memory Hole solution
cxl/acpi: Rename CFMW coherency restrictions
Documentation/driver-api: Fix typo error in cxl
acpi/hmat: Remove now unused hmat_update_target_coordinates()
cxl, acpi/hmat: Update CXL access coordinates directly instead of through HMAT
drivers/base/node: Add a helper function node_update_perf_attrs()
mm/memory_hotplug: Update comment for hotplug memory callback priorities
cxl: Fix emit of type resource_size_t argument for validate_region_offset()
cxl/region: Add inject and clear poison by region offset
cxl/core: Add locked variants of the poison inject and clear funcs
...
Instead of using CPUFREQ_ETERNAL for signaling an error condition
in cppc_get_transition_latency(), change the return value type of
that function to int and make it return a proper negative error
code on failures.
No intentional functional impact.
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Reviewed-by: Jie Zhan <zhanjie9@hisilicon.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Qais Yousef <qyousef@layalina.io>
Merge an ACPI device enumeration update, ACPI processor driver updates,
and an ACPI sysfs-related code update for 6.18-rc1:
- Add Intel CVS ACPI HIDs to acpi_ignore_dep_ids[] so it is not
regarded as real dependency (Hans de Goede)
- Use ACPI_FREE() for freeing an ACPI object in description_show() in
the ACPI sysfs-related code (Kaushlendra Kumar)
- Fix memory leak in the ACPI processor idle driver registration error
code path and optimize ACPI idle driver registration (Huisong Li,
Rafael Wysocki)
- Add module import namespace to the ACPI processor idle driver (Rafael
Wysocki)
- Eliminate static variable flat_state_cnt from the ACPI processor idle
driver (Rafael Wysocki)
- Release cpufreq policy references using __free() in the ACPI
processor thremal driver (Zihuan Zhang)
- Remove unused empty stubs of some functions and rearrange function
declarations in a header file in the ACPI processor driver (Huisong
Li)
- Redefine two functions as void in the ACPI processor driver (Rafael
Wysocki)
- Do not expose global variable acpi_idle_driver in the ACPI processor
driver (Huisong Li)
* acpi-scan:
ACPI: scan: Add Intel CVS ACPI HIDs to acpi_ignore_dep_ids[]
* acpi-processor:
ACPI: processor: Do not expose global variable acpi_idle_driver
ACPI: processor: idle: Redefine two functions as void
ACPI: processor: Update cpuidle driver check in __acpi_processor_start()
ACPI: processor: idle: Rearrange declarations in header file
ACPI: processor: Remove unused empty stubs of some functions
ACPI: processor: thermal: Release policy references using __free()
ACPI: processor: idle: Fix function defined but not used warning
ACPI: processor: idle: Eliminate static variable flat_state_cnt
ACPI: processor: idle: Add module import namespace
ACPI: processor: idle: Optimize ACPI idle driver registration
ACPI: processor: idle: Fix memory leak when register cpuidle device failed
* acpi-sysfs:
ACPI: sysfs: Use ACPI_FREE() for freeing an ACPI object
Move the cpuidle driver check from __acpi_processor_start() to
acpi_processor_power_init() which allows variable acpi_idle_driver to
become static.
No intentional functional impact.
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20250923032428.2656329-2-lihuisong@huawei.com
[ rjw: Subject tweak, new changelog, adjustment of a new comment ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Notice that acpi_processor_power_init() and acpi_processor_power_exit()
don't need to return any values because their callers don't check them
anyway, so redefine those functions as void.
While at it, rearrange the code in acpi_processor_power_init() to
reduce the indentation level, get rid of a redundant local variable
in that function, and rephrase a code comment in it.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Group all of the declarations of functions that belong to the ACPI
processor idle driver together in one place in processor.h.
While at it, drop the unnecessary extern modifier from the declaraions
of two functions.
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20250911112408.1668431-3-lihuisong@huawei.com
[ rjw: Subject and changelog rewrite ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Empty stubs are defined in processor.h for some functions provided by
the ACPI processor idle driver, but those functions are only used in
the main ACPI processor driver which requires the ACPI processor idle
driver to be present (selecting CONFIG_ACPI_PROCESSOR causes
CONFIG_ACPI_PROCESSOR_IDLE to be selected too automatically).
This means that the empty stubs in question are not really necessary and
if both CONFIG_ACPI_PROCESSOR and CONFIG_ACPI_PROCESSOR_IDLE are unset,
the compiler complains that they are defined, but not used. Drop them
to get rid of the compiler warning.
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20250911112408.1668431-2-lihuisong@huawei.com
[ rjw: Subject and changelog rewrite ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This is added in newer version (3.0+) of the CXL Spec to support the
HDM-DB coherency model.
Link: https://github.com/acpica/acpica/commit/a6886da1
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Fix Issue #1027 by displaying error messages when there are too few or
too many arguments in the caller vs the definition of an ASL/AML method.
Link: https://github.com/acpica/acpica/commit/cbc243e4
Reported-by: Peter Williams <peter@newton.cx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Hans de Goede <hansg@kernel.org>
Signed-off-by: Saket Dumbre <saket.dumbre@intel.com>
Add ACPI_NONSTRING for destination char arrays without a terminating NUL
character.
This is a follow-up to commit 2b82118845 ("ACPICA: Apply ACPI_NONSTRING")
where a few more destination arrays were missed.
Link: https://github.com/acpica/acpica/commit/f359e5ed
Fixes: 2b82118845 ("ACPICA: Apply ACPI_NONSTRING")
Signed-off-by: Ahmed Salem <x0rw3ll@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Introduce acpi_gbl_use_global_lock, which allows to skip the Global Lock
initialization. This is useful for systems without Global Lock (such as
loong_arch), so as to avoid error messages during boot phase:
ACPI Error: Could not enable global_lock event (20240827/evxfevnt-182)
ACPI Error: No response from Global Lock hardware, disabling lock (20240827/evglock-59)
Link: https://github.com/acpica/acpica/commit/463cb0fe
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit 710745713ad3a2543dbfb70e84764f31f0e46bdc
This has been renamed in more recent CXL specs, as
type3 (memory expanders) can also use HDM-DB for
device coherent memory.
Link: 710745713a
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20250908160034.86471-1-dave@stgolabs.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
If CONFIG_ACPI_PROCESSOR_IDLE=n, acpi_processor_register_idle_driver()
and acpi_processor_unregister_idle_driver() are never used and the
empty stubs of them are not needed. Moreover, they cause the compiler
to complain [1], so remove them.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202508300519.tZQHY6HA-lkp@intel.com/ [1]
Fixes: 7a8c994cbb ("ACPI: processor: idle: Optimize ACPI idle driver registration")
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20250905081900.663869-2-lihuisong@huawei.com
[ rjw: Changelog rewrite ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Currently, the ACPI idle driver is registered from within a CPU
hotplug callback. Although this didn't cause any functional issues,
this is questionable and confusing. And it is better to register
the cpuidle driver when all of the CPUs have been brought up.
So add a new function to initialize acpi_idle_driver based on the
power management information of an available CPU and register cpuidle
driver in acpi_processor_driver_init().
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20250728070612.1260859-3-lihuisong@huawei.com
[ rjw: Added missing inline modifiers ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The File Download (FDL) process of SoundWire Class Audio (SDCA) driver,
which provides code/data which may be required by an SDCA device,
utilizes SWFT to obtain that code/data. There is a single SWFT for the
system, and SWFT can contain multiple files (information about the file
as well as its binary contents). The SWFT has a standard ACPI Descriptor
Table Header, followed by SoundWire File definitions as described in
Discovery and Configuration (DisCo) Specification for SoundWire®
Link: https://github.com/acpica/acpica/commit/18c96022
Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250811134505.1162661-1-mstrozek@opensource.cirrus.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Define a new, optional, callback that allows the driver to
specify how the return data buffer is allocated. If that callback
is set, mailbox/pcc.c is now responsible for reading from and
writing to the PCC shared buffer.
This also allows for proper checks of the Commnand complete flag
between the PCC sender and receiver.
For Type 4 channels, initialize the command complete flag prior
to accepting messages.
Since the mailbox does not know what memory allocation scheme
to use for response messages, the client now has an optional
callback that allows it to allocate the buffer for a response
message.
When an outbound message is written to the buffer, the mailbox
checks for the flag indicating the client wants an tx complete
notification via IRQ. Upon receipt of the interrupt It will
pair it with the outgoing message. The expected use is to
free the kernel memory buffer for the previous outgoing message.
Signed-off-by: Adam Young <admiyo@os.amperecomputing.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
- Printing the address in acpi_ex_trace_point() is either incorrect
during early kernel boot or not really useful later when pathnames
resolve properly, so stop doing it (Mario Limonciello)
- Address several minor issues in the legacy ACPI proc interface (Andy
Shevchenko)
- Fix acpi_object union initialization in the ACPI processor driver to
avoid using memory that contains leftover data (Sebastian Ott)
- Make the ACPI processor perflib driver take the initial _PPC limit
into account as appropriate (Jiayi Li)
- Fix message formatting in the ACPI processor throttling driver and
in the ACPI PCI link driver (Colin Ian King)
- Clean up general ACPI PM domain handling (Rafael Wysocki)
- Fix iomem-related sparse warnings in the APEI EINJ driver (Zaid
Alali, Tony Luck)
- Add EINJv2 error injection support to the APEI EINJ driver (Zaid
Alali)
- Fix memory corruption in error_type_set() in the APEI EINJ driver (Dan
Carpenter)
- Fix less than zero comparison on a size_t variable in the APEI EINJ
driver (Colin Ian King)
- Fix check and iounmap of an uninitialized pointer in the APEI EINJ
driver (Colin Ian King)
- Add TAINT_MACHINE_CHECK to the GHES panic path in APEI to improve
diagnostics and post-mortem analysis (Breno Leitao)
- Update APEI reviewer records and other ACPI-related information in
MAINTAINERS as well as the contact information in the ACPI ABI
documentation (Rafael Wysocki)
- Fix the handling of synchronous uncorrected memory errors in APEI
(Shuai Xue)
- Remove an AudioDSP-related ID from the ACPI LPSS driver (Andy
Shevchenko)
- Replace sprintf()/scnprintf() with sysfs_emit() in the ACPI fan
driver and update a debug message in fan_get_state_acpi4() (Eslam
Khafagy, Abdelrahman Fekry, Sumeet Pawnikar)
- Add Intel Wildcat Lake support to the ACPI DPTF driver (Srinivas
Pandruvada)
- Add more debug information regarding failing firmware updates to the
ACPI pfr_update driver (Chen Yu)
- Reduce the verbosity of the ACPI PRM (platform runtime mechanism)
driver to avoid user confusion (Zhu Qiyu)
- Replace sprintf() with sysfs_emit() in the ACPI TAD (time and alarm
device) driver (Sukrut Heroorkar)
- Enable CONFIG_ACPI_DEBUG by default to make it easier to get ACPI
debug messages from OEM platforms (Mario Limonciello)
- Fix parent device references in ASL examples in the ACPI
documentation and fix spelling and style in the gpio-properties
documentation in firmware-guide (Andy Shevchenko)
- Fix typos in ACPI documentation and comments (Bjorn Helgaas)
-----BEGIN PGP SIGNATURE-----
iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmh/qzQSHHJqd0Byand5
c29ja2kubmV0AAoJEO5fvZ0v1OO1wMgH/2vklBeGYjxSIIn0qfiv/SnSW5B1jEE4
5vDuCpafesm7tZtwFB9v2mRf/8SvmJey2jfYgGnBMBlTW0JUP8eCVpRASvx1SCGH
QwJFN3GCs3IjIvT2KlXeDIyQdfITIl3SNTXwTFl/ezYT0vo7VBeFtofeL9szaxlP
rM1KeLE7lksjY9djT8PRwxOQ+EzuJ8uUGXYcHu797u0x5XB9ZiBDuKqngDicQONI
DaRU3zXwOKPkQhldFN+9HPsDPvm7+8f1yiOEWzLnToTDggQDH4x2wdXJOOpAogoN
qIYBIZG90drNj9USsWZvp0q/fT3OVbuHLuruDGieOCYUByBYddY9WHM=
=5h+J
-----END PGP SIGNATURE-----
Merge tag 'acpi-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These update APEI (new EINJv2 error injection, assorted fixes), fix
the ACPI processor driver, update the legacy ACPI /proc interface
(multiple assorted fixes of minor issues) and several assorted ACPI
drivers (minor fixes and cleanups):
- Printing the address in acpi_ex_trace_point() is either incorrect
during early kernel boot or not really useful later when pathnames
resolve properly, so stop doing it (Mario Limonciello)
- Address several minor issues in the legacy ACPI proc interface
(Andy Shevchenko)
- Fix acpi_object union initialization in the ACPI processor driver
to avoid using memory that contains leftover data (Sebastian Ott)
- Make the ACPI processor perflib driver take the initial _PPC limit
into account as appropriate (Jiayi Li)
- Fix message formatting in the ACPI processor throttling driver and
in the ACPI PCI link driver (Colin Ian King)
- Clean up general ACPI PM domain handling (Rafael Wysocki)
- Fix iomem-related sparse warnings in the APEI EINJ driver (Zaid
Alali, Tony Luck)
- Add EINJv2 error injection support to the APEI EINJ driver (Zaid
Alali)
- Fix memory corruption in error_type_set() in the APEI EINJ driver
(Dan Carpenter)
- Fix less than zero comparison on a size_t variable in the APEI EINJ
driver (Colin Ian King)
- Fix check and iounmap of an uninitialized pointer in the APEI EINJ
driver (Colin Ian King)
- Add TAINT_MACHINE_CHECK to the GHES panic path in APEI to improve
diagnostics and post-mortem analysis (Breno Leitao)
- Update APEI reviewer records and other ACPI-related information in
MAINTAINERS as well as the contact information in the ACPI ABI
documentation (Rafael Wysocki)
- Fix the handling of synchronous uncorrected memory errors in APEI
(Shuai Xue)
- Remove an AudioDSP-related ID from the ACPI LPSS driver (Andy
Shevchenko)
- Replace sprintf()/scnprintf() with sysfs_emit() in the ACPI fan
driver and update a debug message in fan_get_state_acpi4() (Eslam
Khafagy, Abdelrahman Fekry, Sumeet Pawnikar)
- Add Intel Wildcat Lake support to the ACPI DPTF driver (Srinivas
Pandruvada)
- Add more debug information regarding failing firmware updates to
the ACPI pfr_update driver (Chen Yu)
- Reduce the verbosity of the ACPI PRM (platform runtime mechanism)
driver to avoid user confusion (Zhu Qiyu)
- Replace sprintf() with sysfs_emit() in the ACPI TAD (time and alarm
device) driver (Sukrut Heroorkar)
- Enable CONFIG_ACPI_DEBUG by default to make it easier to get ACPI
debug messages from OEM platforms (Mario Limonciello)
- Fix parent device references in ASL examples in the ACPI
documentation and fix spelling and style in the gpio-properties
documentation in firmware-guide (Andy Shevchenko)
- Fix typos in ACPI documentation and comments (Bjorn Helgaas)"
* tag 'acpi-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (39 commits)
ACPI: Fix typos
ACPI/PCI: Remove space before newline
ACPI: processor: throttling: Remove space before newline
ACPI: processor: perflib: Fix initial _PPC limit application
ACPI/PNP: Use my kernel.org address in MAINTAINERS and ABI docs
ACPI: TAD: Replace sprintf() with sysfs_emit()
ACPI: APEI: handle synchronous exceptions in task work
ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered
ACPI: APEI: MAINTAINERS: Update reviewers for APEI
Documentation: ACPI: Fix parent device references
ACPI: fan: Update debug message in fan_get_state_acpi4()
ACPI: PRM: Reduce unnecessary printing to avoid user confusion
ACPI: fan: Replace sprintf() with sysfs_emit()
ACPI: APEI: EINJ: Fix trigger actions
ACPI: processor: fix acpi_object initialization
ACPI: APEI: GHES: add TAINT_MACHINE_CHECK on GHES panic path
ACPI: LPSS: Remove AudioDSP related ID
Documentation: firmware-guide: gpio-properties: Spelling and style fixes
ACPI: fan: Replace sprintf()/scnprintf() with sysfs_emit() in show() functions
ACPI: PM: Set .detach in acpi_general_pm_domain definition
...
The memory uncorrected error could be signaled by asynchronous interrupt
(specifically, SPI in arm64 platform), e.g. when an error is detected by
a background scrubber, or signaled by synchronous exception
(specifically, data abort exception in arm64 platform), e.g. when a CPU
tries to access a poisoned cache line. Currently, both synchronous and
asynchronous errors use memory_failure_queue() to schedule
memory_failure() to exectute in a kworker context.
As a result, when a user-space process is accessing a poisoned data, a
data abort is taken and the memory_failure() is executed in the kworker
context, which:
- will send wrong si_code by SIGBUS signal in early_kill mode, and
- can not kill the user-space in some cases resulting a synchronous
error infinite loop
Issue 1: send wrong si_code in early_kill mode
Since commit a70297d221 ("ACPI: APEI: set memory failure flags as
MF_ACTION_REQUIRED on synchronous events")', the flag MF_ACTION_REQUIRED
could be used to determine whether a synchronous exception occurs on
ARM64 platform. When a synchronous exception is detected, the kernel is
expected to terminate the current process which has accessed a poisoned
page. This is done by sending a SIGBUS signal with error code
BUS_MCEERR_AR, indicating an action-required machine check error on
read.
However, when kill_proc() is called to terminate the processes who has
the poisoned page mapped, it sends the incorrect SIGBUS error code
BUS_MCEERR_AO because the context in which it operates is not the one
where the error was triggered.
To reproduce this problem:
#sysctl -w vm.memory_failure_early_kill=1
vm.memory_failure_early_kill = 1
# STEP2: inject an UCE error and consume it to trigger a synchronous error
#einj_mem_uc single
0: single vaddr = 0xffffb0d75400 paddr = 4092d55b400
injecting ...
triggering ...
signal 7 code 5 addr 0xffffb0d75000
page not present
Test passed
The si_code (code 5) from einj_mem_uc indicates that it is BUS_MCEERR_AO
error and it is not factually correct.
After this change:
# STEP1: enable early kill mode
#sysctl -w vm.memory_failure_early_kill=1
vm.memory_failure_early_kill = 1
# STEP2: inject an UCE error and consume it to trigger a synchronous error
#einj_mem_uc single
0: single vaddr = 0xffffb0d75400 paddr = 4092d55b400
injecting ...
triggering ...
signal 7 code 4 addr 0xffffb0d75000
page not present
Test passed
The si_code (code 4) from einj_mem_uc indicates that it is a BUS_MCEERR_AR
error as expected.
Issue 2: a synchronous error infinite loop
If a user-space process, e.g. devmem, accesses a poisoned page for which
the HWPoison flag is set, kill_accessing_process() is called to send
SIGBUS to current processs with error info. Since the memory_failure()
is executed in the kworker context, it will just do nothing but return
EFAULT. So, devmem will access the posioned page and trigger an
exception again, resulting in a synchronous error infinite loop. Such
exception loop may cause platform firmware to exceed some threshold and
reboot when Linux could have recovered from this error.
To reproduce this problem:
# STEP 1: inject an UCE error, and kernel will set HWPosion flag for related page
#einj_mem_uc single
0: single vaddr = 0xffffb0d75400 paddr = 4092d55b400
injecting ...
triggering ...
signal 7 code 4 addr 0xffffb0d75000
page not present
Test passed
# STEP 2: access the same page and it will trigger a synchronous error infinite loop
devmem 0x4092d55b400
To fix above two issues, queue memory_failure() as a task_work so that
it runs in the context of the process that is actually consuming the
poisoned data.
Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Tested-by: Ma Wupeng <mawupeng1@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Xiaofei Tan <tanxiaofei@huawei.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Link: https://patch.msgid.link/20250714114212.31660-3-xueshuai@linux.alibaba.com
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
After commit a28b2bfc09 ("cppc_cpufreq: replace per-cpu data array with a
list"), cpu_data can be got from policy->driver_data, so cpu_data_list is
not actually needed and can be removed.
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://patch.msgid.link/20250526113057.3086513-2-zhenglifeng1@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Merge ACPI processor driver updates and ACPI CPPC library updates for
6.16-rc1:
- Clean up the initialization of CPU data structures in the ACPI
processor driver (Zhang Rui).
- Remove an obsolete comment regarding the C-states handling in the
ACPI processor driver (Giovanni Gherdovich).
- Simplify PCC shared memory region handling (Sudeep Holla).
- Rework and extend functions for reading CPPC register values and for
updating CPPC registers (Lifeng Zheng).
- Add three functions related to autonomous CPU performance state
selection to the CPPC library (Lifeng Zheng).
* acpi-processor:
ACPI: processor: idle: Remove redundant pr->power.count assignment
ACPI: processor: idle: Set pr->flags.power unconditionally
ACPI: processor: idle: Remove obsolete comment
* acpi-cppc:
ACPI: CPPC: Add three functions related to autonomous selection
ACPI: CPPC: Modify cppc_get_auto_sel_caps() to cppc_get_auto_sel()
ACPI: CPPC: Refactor register value get and set ABIs
ACPI: CPPC: Add cppc_set_reg_val()
ACPI: CPPC: Extract cppc_get_reg_val_in_pcc()
ACPI: CPPC: Rename cppc_get_perf() to cppc_get_reg_val()
ACPI: CPPC: Optimize cppc_get_perf()
ACPI: CPPC: Add IS_OPTIONAL_CPC_REG macro to judge if a cpc_reg is optional
ACPI: CPPC: Simplify PCC shared memory region handling
ACPI: PCC: Simplify PCC shared memory region handling
ACPICA commit 45253be18b3f37d46cd0072aa3f8a0a21a70e0a4
Changes needed by acpisrc to update copyright year when building for
release.
Link: https://github.com/acpica/acpica/commit/45253be1
Signed-off-by: Saket Dumbre <saket.dumbre@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit 1035a3d453f7dd49a235a59ee84ebda9d2d2f41b
Add ACPI_NONSTRING for destination char arrays without a terminating NUL
character. This is a follow-up to commit 35ad99236f3a ("ACPICA: Apply
ACPI_NONSTRING") where not all instances received the same treatment, in
preparation for replacing strncpy() calls with memcpy()
Link: https://github.com/acpica/acpica/commit/1035a3d4
Signed-off-by: Ahmed Salem <x0rw3ll@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3833065.MHq7AAxBmi@rjwysocki.net
ACPICA commit 2c8a38f747de9d977491a494faf0dfaf799b777b
Rename the structure and field names of the RAS2 table to shorten them and
avoid long lines in the ACPI RAS2 drivers.
1. struct acpi_ras2_shared_memory to struct acpi_ras2_shmem
2. In struct acpi_ras2_shared_memory: fields,
- set_capabilities[16] to set_caps[16]
- num_parameter_blocks to num_param_blks
- set_capabilities_status to set_caps_status
3. struct acpi_ras2_patrol_scrub_parameter to
struct acpi_ras2_patrol_scrub_param
4. In struct acpi_ras2_patrol_scrub_parameter: fields,
- patrol_scrub_command to command
- requested_address_range to req_addr_range
- actual_address_range to actl_addr_range
Link: https://github.com/acpica/acpica/commit/2c8a38f7
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/1942053.CQOukoFCf9@rjwysocki.net
ACPICA commit 878823ca20f1987cba0c9d4c1056be0d117ea4fe
In order to distinguish character arrays from C Strings (i.e. strings with
a terminating NUL character), add support for the "nonstring" attribute
provided by GCC. (A better name might be "ACPI_NONCSTRING", but that's
the attribute name, so stick to the existing naming convention.)
GCC 15's -Wunterminated-string-initialization will warn about truncation
of the NUL byte for string initializers unless the destination is marked
with "nonstring". Prepare for applying this attribute to the project.
Link: https://github.com/acpica/acpica/commit/878823ca
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/1841930.VLH7GnMWUR@rjwysocki.net
Signed-off-by: Kees Cook <kees@kernel.org>
[ rjw: Pick up the tag from Kees ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit dddd9270531d74af523afa68515d8aae6a18bbe0
The ERDT table (and its many subtables) enumerate capabilities
and methods for Intel Resource Director Technology to monitor
and control L3 cache allocation and memory bandwidth by CPU
cores and IO devices.
Structure defined in the Intel Resource Director Technology (RDT)
Architecture specification downloadable from www.intel.com/sdm
Link: https://github.com/acpica/acpica/commit/dddd9270
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3296755.5fSG56mABF@rjwysocki.net
ACPICA commit b8713f71b4023a0396fe61503bbbf5226e5eed1b
Some ERDT subtables have 11 and 24 byte reserved fields.
Add the ACPI_DMT_BUF11 and ACPI_DMT_BUF24 types to describe these reserved
fields in struct acpi_dmtable_info structures.
Shorten the ACPI_SUBTABLE_HEADER_16 name to ACPI_SUBTBL_HDR
Link: https://github.com/acpica/acpica/commit/b8713f71
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3643286.iIbC2pHGDl@rjwysocki.net
ACPICA commit 022e2e4169841f429dbda677a4780830bf4c2177
1) Added source specification to MRRM table comment in actbl2.h
2) Shorten typedef from ACPI_TABLE_MRRM_MEM_RANGE_ENTRY to
struct acpi_mrrm_mem_range_entry
3) Add new typedefs to source/tools/acpisrc/astable.c
4) Fix cut and paste errors in acpi_dm_table_info_mrrm0[] definition
5) Fix indent and source code style errors in actbl2.h
6) The base/length fields in the memory range structure are system
memory addresses, not "MMIO". Update the acpi_dm_table_info_mrrm0[]
strings.
7) Add main/sub table comments to acpi_dm_dump_mrrm() and dt_compile_mrrm()
Link: https://github.com/acpica/acpica/commit/022e2e41
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/2018955.PYKUYFuaPT@rjwysocki.net
ACPICA commit 04fd53b2647b9f6f98cfca551383689cb3b59362
The MRRM table describes association between physical address ranges
and "region numbers".
Structure defined in the Intel Resource Director Technology (RDT)
Architecture specification downloadable from www.intel.com/sdm
Link: https://github.com/acpica/acpica/commit/04fd53b2
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3372188.44csPzL39Z@rjwysocki.net
ACPICA commit 52840d3826bd7e183fcb555e044e190aea0b5021
New MRRM tables can have subtables that are larger than 255 bytes.
Add a new header typedef that uses u16 for Length. Could be
backported to acpi_aspt_header, struct acpi_dmar_header, struct acpi_nfit_header,
struct acpi_prmt_module_header, struct acpi_prmt_module_info. Will be used for
upcoming ERDT table.
MRRM table has a 26-byte reserved section in header. Add ACPI_DMT_BUF26
to describe this in struct acpi_dmtable_info.
Link: https://github.com/acpica/acpica/commit/52840d38
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3005638.e9J7NaK4W3@rjwysocki.net
ACPICA commit af51f730e0bccf789686cea68e116d5f0b27aacb
Added in revision 3.4 of the VT-d spec. To support SIDP, part of the
previously reserved field in the device scope structure was used to
create a 1-byte "Flags" field.
Link: https://github.com/acpica/acpica/commit/af51f730
Signed-off-by: Alexey Neyman <aneyman@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/2239745.irdbgypaU6@rjwysocki.net
Modify cppc_get_auto_sel_caps() to cppc_get_auto_sel(). Using a
cppc_perf_caps to carry the value is unnecessary.
Add a check to ensure the pointer 'enable' is not null.
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://patch.msgid.link/20250411093855.982491-8-zhenglifeng1@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit 48e7c4cd893270dab8d05e6d75fbf23d0fcbb267
Commit a025731aec31 ("Restructure ACPI table files") restructed the
header files and moved lots of tables that are in the ACPI specification
to actbl2.h(e.g.: APIC/MADT, PCCT, PPTT, ..etc).
This restructure made the comment stating this header file contains tables
that are not in the ACPI specification incorrect. From that commit onwards
it has remained as stale. Let us get rid of it as it might be misleading.
Link: https://github.com/acpica/acpica/commit/48e7c4cd
Reported-by: Sahil Kaushal <sahil.kaushal@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/6168200.lOV4Wx5bFT@rjwysocki.net
This is not great: I'd much rather introduce a typedef that is a "ACPI
name byte buffer", and use that to mark these special 4-byte ACPI names
that do not use NUL termination.
But as noted in the previous commit ("gcc-15: make 'unterminated string
initialization' just a warning") gcc doesn't actually seem to support
that notion, so instead you have to just mark every single array
declaration individually.
So this is not pretty, but this gets rid of the bulk of the annoying
warnings during an allmodconfig build for me.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
pcc: cleanup and refactoring of shmem and irq handling
qcom: add MSM8226 compatible
fsl,mu: add i.MX94 compatible
core: misc rejig of header includes
minor const fixes
mediatek: remove cl in struct cmdq_pkt
tegra: define dimensioning masks in SoC data
-----BEGIN PGP SIGNATURE-----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=Jii1
-----END PGP SIGNATURE-----
Merge tag 'mailbox-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox
Pull mailbox updates from Jassi Brar:
"Core:
- misc rejig of header includes
- minor const fixes
Misc:
- constify amba_id table
pcc:
- cleanup and refactoring of shmem and irq handling
qcom:
- add MSM8226 compatible
fsl,mu:
- add i.MX94 compatible
mediatek:
- remove cl in struct cmdq_pkt
tegra:
- define dimensioning masks in SoC data"
* tag 'mailbox-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: (25 commits)
mailbox: Remove unneeded semicolon
mailbox: pcc: Refactor and simplify check_and_ack()
mailbox: pcc: Always map the shared memory communication address
mailbox: pcc: Refactor error handling in irq handler into separate function
mailbox: pcc: Use acpi_os_ioremap() instead of ioremap()
mailbox: pcc: Return early if no GAS register from pcc_mbox_cmd_complete_check
mailbox: pcc: Drop unnecessary endianness conversion of pcc_hdr.flags
mailbox: pcc: Always clear the platform ack interrupt first
mailbox: pcc: Fix the possible race in updation of chan_in_use flag
dt-bindings: mailbox: qcom: add compatible for MSM8226 SoC
dt-bindings: mailbox: fsl,mu: Add i.MX94 compatible
MAINTAINERS: add mailbox API's tree type and location
mailbox: remove unused header files
mailbox: explicitly include <linux/bits.h>
mailbox: sort headers alphabetically
mailbox: don't protect of_parse_phandle_with_args with con_mutex
mailbox: use error ret code of of_parse_phandle_with_args()
mailbox: arm_mhuv2: Constify amba_id table
mailbox: arm_mhu_db: Constify amba_id table
mailbox: arm_mhu: Constify amba_id table
...
Currently the shared memory communication address was mapped by the
mailbox client drivers leading to all sorts of inconsistencies.
It also has resulted in the inconsistent attributes used while mapping
the shared memory regions.
In order to remove/eliminate any issues, let us ensures the shared
memory address is always mapped and unmapped when the PCC channels are
requested and release.
We need to map them as the ACPI PCCT associates these shared memory
with each channel subspace and may need use the status or the flags in
the headers of those shared memory communication address regions to
manage the transport/channel.
Note, until all the drivers using PCC start using this mapped shmem,
there might be double mapping of the shared memory address. This
shouldn't have any impact on existing mbox client drivers.
Since there are no users of pcc_chan_ioremap() and also it is mapped
by default, we can stop exporting it and merge the functionality into
pcc_mbox_request_channel().
Acked-by: Huisong Li <lihuisong@huawei.com>
Tested-by: Huisong Li <lihuisong@huawei.com>
Tested-by: Adam Young <admiyo@os.amperecomputing.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
The Sparse static checker flags a type mismatch warning related to
endianness conversion:
| warning: incorrect type in argument 1 (different base types)
| expected restricted __le32 const [usertype] *p
| got unsigned int *
This is because an explicit endianness conversion (le32_to_cpu()) was
applied unnecessarily to a pcc_hdr.flags field that is already in
little-endian format.
The PCC driver is only enabled on little-endian kernels due to its
dependency on ACPI and EFI, making the explicit conversion unnecessary.
The redundant conversion occurs in pcc_chan_check_and_ack() for the
pcc_hdr.flags field. Drop this unnecessary endianness conversion of
pcc_hdr.flags.
Also drop the redundant PCC_ACK_FLAG_MASK definition and use the
more appropriate and already defined PCC_CMD_COMPLETION_NOTIFY.
Acked-by: Huisong Li <lihuisong@huawei.com>
Tested-by: Adam Young <admiyo@os.amperecomputing.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Fix some related issues (done in a single patch to avoid introducing
intermediate bisect warnings):
1) The SMP version of mwait_play_dead() doesn't return, but its
!SMP counterpart does. Make its calling behavior consistent by
resolving the !SMP version to a BUG(). It should never be called
anyway, this just enforces that at runtime and enables its callers
to be marked as __noreturn.
2) While the SMP definition of mwait_play_dead() is annotated as
__noreturn, the declaration isn't. Nor is it listed in
tools/objtool/noreturns.h. Fix that.
3) Similar to #1, the SMP version of acpi_processor_ffh_play_dead()
doesn't return but its !SMP counterpart does. Make the !SMP
version a BUG(). It should never be called.
4) acpi_processor_ffh_play_dead() doesn't return, but is lacking any
__noreturn annotations. Fix that.
This fixes the following objtool warnings:
vmlinux.o: warning: objtool: acpi_processor_ffh_play_dead+0x67: mwait_play_dead() is missing a __noreturn annotation
vmlinux.o: warning: objtool: acpi_idle_play_dead+0x3c: acpi_processor_ffh_play_dead() is missing a __noreturn annotation
Fixes: a7dd183f0b ("x86/smp: Allow calling mwait_play_dead with an arbitrary hint")
Fixes: 541ddf31e3 ("ACPI/processor_idle: Add FFH state handling")
Reported-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/e885c6fa9e96a61471b33e48c2162d28b15b14c5.1740962711.git.jpoimboe@kernel.org
Recent Intel platforms will depend on the idle driver to pass the
correct hint for playing dead via mwait_play_dead_with_hint(). Expand
the existing enter_dead interface with handling for FFH states and pass
the MWAIT hint to the mwait_play_dead code.
Suggested-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.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/20250205155211.329780-3-artem.bityutskiy%40linux.intel.com
1, Migrate to the generic rule for built-in DTB;
2, Disable FIX_EARLYCON_MEM when ARCH_IOREMAP is enabled;
3, Derive timer max_delta from PRCFG1's timer_bits;
4, Correct the cacheinfo sharing information;
5, Add pgprot_nx() implementation;
6, Add debugfs entries to switch SFB/TSO state;
7, Change the maximum number of watchpoints;
8, Some bug fixes and other small changes.
-----BEGIN PGP SIGNATURE-----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=dfxU
-----END PGP SIGNATURE-----
Merge tag 'loongarch-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Migrate to the generic rule for built-in DTB
- Disable FIX_EARLYCON_MEM when ARCH_IOREMAP is enabled
- Derive timer max_delta from PRCFG1's timer_bits
- Correct the cacheinfo sharing information
- Add pgprot_nx() implementation
- Add debugfs entries to switch SFB/TSO state
- Change the maximum number of watchpoints
- Some bug fixes and other small changes
* tag 'loongarch-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: Extend the maximum number of watchpoints
LoongArch: Change 8 to 14 for LOONGARCH_MAX_{BRP,WRP}
LoongArch: Add debugfs entries to switch SFB/TSO state
LoongArch: Fix warnings during S3 suspend
LoongArch: Adjust SETUP_SLEEP and SETUP_WAKEUP
LoongArch: Refactor bug_handler() implementation
LoongArch: Add pgprot_nx() implementation
LoongArch: Correct the __switch_to() prototype in comments
LoongArch: Correct the cacheinfo sharing information
LoongArch: Derive timer max_delta from PRCFG1's timer_bits
LoongArch: Disable FIX_EARLYCON_MEM when ARCH_IOREMAP is enabled
LoongArch: Migrate to the generic rule for built-in DTB
indivudual patches which are described in their changelogs.
- "Allocate and free frozen pages" from Matthew Wilcox reorganizes the
page allocator so we end up with the ability to allocate and free
zero-refcount pages. So that callers (ie, slab) can avoid a refcount
inc & dec.
- "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use
large folios other than PMD-sized ones.
- "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and
fixes for this small built-in kernel selftest.
- "mas_anode_descend() related cleanup" from Wei Yang tidies up part of
the mapletree code.
- "mm: fix format issues and param types" from Keren Sun implements a
few minor code cleanups.
- "simplify split calculation" from Wei Yang provides a few fixes and a
test for the mapletree code.
- "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes
continues the work of moving vma-related code into the (relatively) new
mm/vma.c.
- "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David
Hildenbrand cleans up and rationalizes handling of gfp flags in the page
allocator.
- "readahead: Reintroduce fix for improper RA window sizing" from Jan
Kara is a second attempt at fixing a readahead window sizing issue. It
should reduce the amount of unnecessary reading.
- "synchronously scan and reclaim empty user PTE pages" from Qi Zheng
addresses an issue where "huge" amounts of pte pagetables are
accumulated
(https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/).
Qi's series addresses this windup by synchronously freeing PTE memory
within the context of madvise(MADV_DONTNEED).
- "selftest/mm: Remove warnings found by adding compiler flags" from
Muhammad Usama Anjum fixes some build warnings in the selftests code
when optional compiler warnings are enabled.
- "mm: don't use __GFP_HARDWALL when migrating remote pages" from David
Hildenbrand tightens the allocator's observance of __GFP_HARDWALL.
- "pkeys kselftests improvements" from Kevin Brodsky implements various
fixes and cleanups in the MM selftests code, mainly pertaining to the
pkeys tests.
- "mm/damon: add sample modules" from SeongJae Park enhances DAMON to
estimate application working set size.
- "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn
provides some cleanups to memcg's hugetlb charging logic.
- "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song
removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based
kernel build was demonstrated.
- "zram: split page type read/write handling" from Sergey Senozhatsky
has several fixes and cleaups for zram in the area of zram_write_page().
A watchdog softlockup warning was eliminated.
- "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky
cleans up the pagetable destructor implementations. A rare
use-after-free race is fixed.
- "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes
simplifies and cleans up the debugging code in the VMA merging logic.
- "Account page tables at all levels" from Kevin Brodsky cleans up and
regularizes the pagetable ctor/dtor handling. This results in
improvements in accounting accuracy.
- "mm/damon: replace most damon_callback usages in sysfs with new core
functions" from SeongJae Park cleans up and generalizes DAMON's sysfs
file interface logic.
- "mm/damon: enable page level properties based monitoring" from
SeongJae Park increases the amount of information which is presented in
response to DAMOS actions.
- "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes
DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs
is completed.
- "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter
Xu cleans up and generalizes the hugetlb reservation accounting.
- "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino
removes a never-used feature of the alloc_pages_bulk() interface.
- "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park
extends DAMOS filters to support not only exclusion (rejecting), but
also inclusion (allowing) behavior.
- "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi
"introduces a new memory descriptor for zswap.zpool that currently
overlaps with struct page for now. This is part of the effort to reduce
the size of struct page and to enable dynamic allocation of memory
descriptors."
- "mm, swap: rework of swap allocator locks" from Kairui Song redoes and
simplifies the swap allocator locking. A speedup of 400% was
demonstrated for one workload. As was a 35% reduction for kernel build
time with swap-on-zram.
- "mm: update mips to use do_mmap(), make mmap_region() internal" from
Lorenzo Stoakes reworks MIPS's use of mmap_region() so that
mmap_region() can be made MM-internal.
- "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU
regressions and otherwise improves MGLRU performance.
- "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park
updates DAMON documentation.
- "Cleanup for memfd_create()" from Isaac Manjarres does that thing.
- "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand
provides various cleanups in the areas of hugetlb folios, THP folios and
migration.
- "Uncached buffered IO" from Jens Axboe implements the new
RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache
reading and writing. To permite userspace to address issues with
massive buildup of useless pagecache when reading/writing fast devices.
- "selftests/mm: virtual_address_range: Reduce memory" from Thomas
Weißschuh fixes and optimizes some of the MM selftests.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ5a+cwAKCRDdBJ7gKXxA
jtoyAP9R58oaOKPJuTizEKKXvh/RpMyD6sYcz/uPpnf+cKTZxQEAqfVznfWlw/Lz
uC3KRZYhmd5YrxU4o+qjbzp9XWX/xAE=
=Ib2s
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"The various patchsets are summarized below. Plus of course many
indivudual patches which are described in their changelogs.
- "Allocate and free frozen pages" from Matthew Wilcox reorganizes
the page allocator so we end up with the ability to allocate and
free zero-refcount pages. So that callers (ie, slab) can avoid a
refcount inc & dec
- "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to
use large folios other than PMD-sized ones
- "Fix mm/rodata_test" from Petr Tesarik performs some maintenance
and fixes for this small built-in kernel selftest
- "mas_anode_descend() related cleanup" from Wei Yang tidies up part
of the mapletree code
- "mm: fix format issues and param types" from Keren Sun implements a
few minor code cleanups
- "simplify split calculation" from Wei Yang provides a few fixes and
a test for the mapletree code
- "mm/vma: make more mmap logic userland testable" from Lorenzo
Stoakes continues the work of moving vma-related code into the
(relatively) new mm/vma.c
- "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David
Hildenbrand cleans up and rationalizes handling of gfp flags in the
page allocator
- "readahead: Reintroduce fix for improper RA window sizing" from Jan
Kara is a second attempt at fixing a readahead window sizing issue.
It should reduce the amount of unnecessary reading
- "synchronously scan and reclaim empty user PTE pages" from Qi Zheng
addresses an issue where "huge" amounts of pte pagetables are
accumulated:
https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/
Qi's series addresses this windup by synchronously freeing PTE
memory within the context of madvise(MADV_DONTNEED)
- "selftest/mm: Remove warnings found by adding compiler flags" from
Muhammad Usama Anjum fixes some build warnings in the selftests
code when optional compiler warnings are enabled
- "mm: don't use __GFP_HARDWALL when migrating remote pages" from
David Hildenbrand tightens the allocator's observance of
__GFP_HARDWALL
- "pkeys kselftests improvements" from Kevin Brodsky implements
various fixes and cleanups in the MM selftests code, mainly
pertaining to the pkeys tests
- "mm/damon: add sample modules" from SeongJae Park enhances DAMON to
estimate application working set size
- "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn
provides some cleanups to memcg's hugetlb charging logic
- "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song
removes the global swap cgroup lock. A speedup of 10% for a
tmpfs-based kernel build was demonstrated
- "zram: split page type read/write handling" from Sergey Senozhatsky
has several fixes and cleaups for zram in the area of
zram_write_page(). A watchdog softlockup warning was eliminated
- "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin
Brodsky cleans up the pagetable destructor implementations. A rare
use-after-free race is fixed
- "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes
simplifies and cleans up the debugging code in the VMA merging
logic
- "Account page tables at all levels" from Kevin Brodsky cleans up
and regularizes the pagetable ctor/dtor handling. This results in
improvements in accounting accuracy
- "mm/damon: replace most damon_callback usages in sysfs with new
core functions" from SeongJae Park cleans up and generalizes
DAMON's sysfs file interface logic
- "mm/damon: enable page level properties based monitoring" from
SeongJae Park increases the amount of information which is
presented in response to DAMOS actions
- "mm/damon: remove DAMON debugfs interface" from SeongJae Park
removes DAMON's long-deprecated debugfs interfaces. Thus the
migration to sysfs is completed
- "mm/hugetlb: Refactor hugetlb allocation resv accounting" from
Peter Xu cleans up and generalizes the hugetlb reservation
accounting
- "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino
removes a never-used feature of the alloc_pages_bulk() interface
- "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park
extends DAMOS filters to support not only exclusion (rejecting),
but also inclusion (allowing) behavior
- "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi
introduces a new memory descriptor for zswap.zpool that currently
overlaps with struct page for now. This is part of the effort to
reduce the size of struct page and to enable dynamic allocation of
memory descriptors
- "mm, swap: rework of swap allocator locks" from Kairui Song redoes
and simplifies the swap allocator locking. A speedup of 400% was
demonstrated for one workload. As was a 35% reduction for kernel
build time with swap-on-zram
- "mm: update mips to use do_mmap(), make mmap_region() internal"
from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that
mmap_region() can be made MM-internal
- "mm/mglru: performance optimizations" from Yu Zhao fixes a few
MGLRU regressions and otherwise improves MGLRU performance
- "Docs/mm/damon: add tuning guide and misc updates" from SeongJae
Park updates DAMON documentation
- "Cleanup for memfd_create()" from Isaac Manjarres does that thing
- "mm: hugetlb+THP folio and migration cleanups" from David
Hildenbrand provides various cleanups in the areas of hugetlb
folios, THP folios and migration
- "Uncached buffered IO" from Jens Axboe implements the new
RWF_DONTCACHE flag which provides synchronous dropbehind for
pagecache reading and writing. To permite userspace to address
issues with massive buildup of useless pagecache when
reading/writing fast devices
- "selftests/mm: virtual_address_range: Reduce memory" from Thomas
Weißschuh fixes and optimizes some of the MM selftests"
* tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (321 commits)
mm/compaction: fix UBSAN shift-out-of-bounds warning
s390/mm: add missing ctor/dtor on page table upgrade
kasan: sw_tags: use str_on_off() helper in kasan_init_sw_tags()
tools: add VM_WARN_ON_VMG definition
mm/damon/core: use str_high_low() helper in damos_wmark_wait_us()
seqlock: add missing parameter documentation for raw_seqcount_try_begin()
mm/page-writeback: consolidate wb_thresh bumping logic into __wb_calc_thresh
mm/page_alloc: remove the incorrect and misleading comment
zram: remove zcomp_stream_put() from write_incompressible_page()
mm: separate move/undo parts from migrate_pages_batch()
mm/kfence: use str_write_read() helper in get_access_type()
selftests/mm/mkdirty: fix memory leak in test_uffdio_copy()
kasan: hw_tags: Use str_on_off() helper in kasan_init_hw_tags()
selftests/mm: virtual_address_range: avoid reading from VM_IO mappings
selftests/mm: vm_util: split up /proc/self/smaps parsing
selftests/mm: virtual_address_range: unmap chunks after validation
selftests/mm: virtual_address_range: mmap() without PROT_WRITE
selftests/memfd/memfd_test: fix possible NULL pointer dereference
mm: add FGP_DONTCACHE folio creation flag
mm: call filemap_fdatawrite_range_kick() after IOCB_DONTCACHE issue
...
The enable_gpe_wakeup() function calls acpi_enable_all_wakeup_gpes(),
and the later one may call the preempt_schedule_common() function,
resulting in a thread switch and causing the CPU to be in an interrupt
enabled state after the enable_gpe_wakeup() function returns, leading
to the warnings as follow.
[ C0] WARNING: ... at kernel/time/timekeeping.c:845 ktime_get+0xbc/0xc8
[ C0] ...
[ C0] Call Trace:
[ C0] [<90000000002243b4>] show_stack+0x64/0x188
[ C0] [<900000000164673c>] dump_stack_lvl+0x60/0x88
[ C0] [<90000000002687e4>] __warn+0x8c/0x148
[ C0] [<90000000015e9978>] report_bug+0x1c0/0x2b0
[ C0] [<90000000016478e4>] do_bp+0x204/0x3b8
[ C0] [<90000000025b1924>] exception_handlers+0x1924/0x10000
[ C0] [<9000000000343bbc>] ktime_get+0xbc/0xc8
[ C0] [<9000000000354c08>] tick_sched_timer+0x30/0xb0
[ C0] [<90000000003408e0>] __hrtimer_run_queues+0x160/0x378
[ C0] [<9000000000341f14>] hrtimer_interrupt+0x144/0x388
[ C0] [<9000000000228348>] constant_timer_interrupt+0x38/0x48
[ C0] [<90000000002feba4>] __handle_irq_event_percpu+0x64/0x1e8
[ C0] [<90000000002fed48>] handle_irq_event_percpu+0x20/0x80
[ C0] [<9000000000306b9c>] handle_percpu_irq+0x5c/0x98
[ C0] [<90000000002fd4a0>] generic_handle_domain_irq+0x30/0x48
[ C0] [<9000000000d0c7b0>] handle_cpu_irq+0x70/0xa8
[ C0] [<9000000001646b30>] handle_loongarch_irq+0x30/0x48
[ C0] [<9000000001646bc8>] do_vint+0x80/0xe0
[ C0] [<90000000002aea1c>] finish_task_switch.isra.0+0x8c/0x2a8
[ C0] [<900000000164e34c>] __schedule+0x314/0xa48
[ C0] [<900000000164ead8>] schedule+0x58/0xf0
[ C0] [<9000000000294a2c>] worker_thread+0x224/0x498
[ C0] [<900000000029d2f0>] kthread+0xf8/0x108
[ C0] [<9000000000221f28>] ret_from_kernel_thread+0xc/0xa4
[ C0]
[ C0] ---[ end trace 0000000000000000 ]---
The root cause is acpi_enable_all_wakeup_gpes() uses a mutex to protect
acpi_hw_enable_all_wakeup_gpes(), and acpi_ut_acquire_mutex() may cause
a thread switch. Since there is no longer concurrent execution during
loongarch_acpi_suspend(), we can call acpi_hw_enable_all_wakeup_gpes()
directly in enable_gpe_wakeup().
The solution is similar to commit 22db06337f ("ACPI: sleep: Avoid
breaking S3 wakeup due to might_sleep()").
Fixes: 366bb35a8e ("LoongArch: Add suspend (ACPI S3) support")
Signed-off-by: Qunqin Zhao <zhaoqunqin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Provide an implementation of acpi_device_hid that can be used when
CONFIG_ACPI is not set.
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://patch.msgid.link/20241216-fix-ipu-v5-6-3d6b35ddce7b@chromium.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Provide an implementation of for_each_acpi_consumer_dev that can be use
used when CONFIG_ACPI is not set.
The expression `false && supplier` is used to avoid "variable not used"
warnings.
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://patch.msgid.link/20241216-fix-ipu-v5-5-3d6b35ddce7b@chromium.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Provide an implementation of acpi_get_physical_device_location that can
be used when CONFIG_ACPI is not set.
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://patch.msgid.link/20241216-fix-ipu-v5-3-3d6b35ddce7b@chromium.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Provide an implementation of for_each_acpi_dev_match that can be used
when CONFIG_ACPI is not set.
The condition `false && hid && uid && hrv` is used to avoid "variable
not used" warnings.
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://patch.msgid.link/20241216-fix-ipu-v5-2-3d6b35ddce7b@chromium.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
It generally is not OK to use acpi_status and/or AE_ error codes
without CONFIG_ACPI and they really only should be used in
drivers/acpi/ (and not everywhere in there for that matter).
So acpi_get_physical_device_location() needs to be redefined to return
something different from acpi_status (preferably bool) in order to be
used in !CONFIG_ACPI code.
Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://patch.msgid.link/20241216-fix-ipu-v5-1-3d6b35ddce7b@chromium.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
performs some cleanups in the resource management code.
- The series "Improve the copy of task comm" from Yafang Shao addresses
possible race-induced overflows in the management of task_struct.comm[].
- The series "Remove unnecessary header includes from
{tools/}lib/list_sort.c" from Kuan-Wei Chiu adds some cleanups and a
small fix to the list_sort library code and to its selftest.
- The series "Enhance min heap API with non-inline functions and
optimizations" also from Kuan-Wei Chiu optimizes and cleans up the
min_heap library code.
- The series "nilfs2: Finish folio conversion" from Ryusuke Konishi
finishes off nilfs2's folioification.
- The series "add detect count for hung tasks" from Lance Yang adds more
userspace visibility into the hung-task detector's activity.
- Apart from that, singelton patches in many places - please see the
individual changelogs for details.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ0L6lQAKCRDdBJ7gKXxA
jmEIAPwMSglNPKRIOgzOvHh8MUJW1Dy8iKJ2kWCO3f6QTUIM2AEA+PazZbUd/g2m
Ii8igH0UBibIgva7MrCyJedDI1O23AA=
=8BIU
-----END PGP SIGNATURE-----
Merge tag 'mm-nonmm-stable-2024-11-24-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- The series "resource: A couple of cleanups" from Andy Shevchenko
performs some cleanups in the resource management code
- The series "Improve the copy of task comm" from Yafang Shao addresses
possible race-induced overflows in the management of
task_struct.comm[]
- The series "Remove unnecessary header includes from
{tools/}lib/list_sort.c" from Kuan-Wei Chiu adds some cleanups and a
small fix to the list_sort library code and to its selftest
- The series "Enhance min heap API with non-inline functions and
optimizations" also from Kuan-Wei Chiu optimizes and cleans up the
min_heap library code
- The series "nilfs2: Finish folio conversion" from Ryusuke Konishi
finishes off nilfs2's folioification
- The series "add detect count for hung tasks" from Lance Yang adds
more userspace visibility into the hung-task detector's activity
- Apart from that, singelton patches in many places - please see the
individual changelogs for details
* tag 'mm-nonmm-stable-2024-11-24-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits)
gdb: lx-symbols: do not error out on monolithic build
kernel/reboot: replace sprintf() with sysfs_emit()
lib: util_macros_kunit: add kunit test for util_macros.h
util_macros.h: fix/rework find_closest() macros
Improve consistency of '#error' directive messages
ocfs2: fix uninitialized value in ocfs2_file_read_iter()
hung_task: add docs for hung_task_detect_count
hung_task: add detect count for hung tasks
dma-buf: use atomic64_inc_return() in dma_buf_getfile()
fs/proc/kcore.c: fix coccinelle reported ERROR instances
resource: avoid unnecessary resource tree walking in __region_intersects()
ocfs2: remove unused errmsg function and table
ocfs2: cluster: fix a typo
lib/scatterlist: use sg_phys() helper
checkpatch: always parse orig_commit in fixes tag
nilfs2: convert metadata aops from writepage to writepages
nilfs2: convert nilfs_recovery_copy_block() to take a folio
nilfs2: convert nilfs_page_count_clean_buffers() to take a folio
nilfs2: remove nilfs_writepage
nilfs2: convert checkpoint file to be folio-based
...
Type 4 PCC channels have an option to send back a response
to the platform when they are done processing the request.
The flag to indicate whether or not to respond is inside
the message body, and thus is not available to the pcc
mailbox.
If the flag is not set, still set command completion
bit after processing message.
In order to read the flag, this patch maps the shared
buffer to virtual memory. To avoid duplication of mapping
the shared buffer is then made available to be used by
the driver that uses the mailbox.
Signed-off-by: Adam Young <admiyo@os.amperecomputing.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
- Constify range_contains() input parameters to prevent changes.
- Add support for displaying RCD capabilities in sysfs to support lspci for CXL device.
- Downgrade warning message to debug in cxl_probe_component_regs().
- Add support for adding a printf specifier '$pra' to emit 'struct range' content.
- Add sanity tests for 'struct resource'.
- Add documentation for special case.
- Add %pra for 'struct range'.
- Add %pra usage in CXL code.
- Add preparation code for DCD support
- Add range_overlaps().
- Add CDAT DSMAS table shared and read only flag in ACPICA.
- Add documentation to 'struct dev_dax_range'.
- Delay event buffer allocation in CXL PCI code until needed.
- Use guard() in cxl_dpa_set_mode().
- Refactor create region code to consolidate common code.
-----BEGIN PGP SIGNATURE-----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=GNlu
-----END PGP SIGNATURE-----
Merge tag 'cxl-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl updates from Dave Jiang:
- Constify range_contains() input parameters to prevent changes
- Add support for displaying RCD capabilities in sysfs to support lspci
for CXL device
- Downgrade warning message to debug in cxl_probe_component_regs()
- Add support for adding a printf specifier '%pra' to emit 'struct
range' content:
- Add sanity tests for 'struct resource'
- Add documentation for special case
- Add %pra for 'struct range'
- Add %pra usage in CXL code
- Add preparation code for DCD support:
- Add range_overlaps()
- Add CDAT DSMAS table shared and read only flag in ACPICA
- Add documentation to 'struct dev_dax_range'
- Delay event buffer allocation in CXL PCI code until needed
- Use guard() in cxl_dpa_set_mode()
- Refactor create region code to consolidate common code
* tag 'cxl-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/region: Refactor common create region code
cxl/hdm: Use guard() in cxl_dpa_set_mode()
cxl/pci: Delay event buffer allocation
dax: Document struct dev_dax_range
ACPI/CDAT: Add CDAT/DSMAS shared and read only flag values
range: Add range_overlaps()
cxl/cdat: Use %pra for dpa range outputs
printf: Add print format (%pra) for struct range
Documentation/printf: struct resource add start == end special case
test printf: Add very basic struct resource tests
cxl: downgrade a warning message to debug level in cxl_probe_component_regs()
cxl/pci: Add sysfs attribute for CXL 1.1 device link status
cxl/core/regs: Add rcd_pcie_cap initialization
kernel/range: Const-ify range_contains parameters
Several new features and uAPI for iommufd:
- IOMMU_IOAS_MAP_FILE allows passing in a file descriptor as the backing
memory for an iommu mapping. To date VFIO/iommufd have used VMA's and
pin_user_pages(), this now allows using memfds and memfd_pin_folios().
Notably this creates a pure folio path from the memfd to the iommu page
table where memory is never broken down to PAGE_SIZE.
- IOMMU_IOAS_CHANGE_PROCESS moves the pinned page accounting between two
processes. Combined with the above this allows iommufd to support a VMM
re-start using exec() where something like qemu would exec() a new
version of itself and fd pass the memfds/iommufd/etc to the new
process. The memfd allows DMA access to the memory to continue while
the new process is getting setup, and the CHANGE_PROCESS updates all
the accounting.
- Support for fault reporting to userspace on non-PRI HW, such as ARM
stall-mode embedded devices.
- IOMMU_VIOMMU_ALLOC introduces the concept of a HW/driver backed virtual
iommu. This will be used by VMMs to access hardware features that are
contained with in a VM. The first use is to inform the kernel of the
virtual SID to physical SID mapping when issuing SID based invalidation
on ARM. Further uses will tie HW features that are directly accessed by
the VM, such as invalidation queue assignment and others.
- IOMMU_VDEVICE_ALLOC informs the kernel about the mapping of virtual
device to physical device within a VIOMMU. Minimially this is used to
translate VM issued cache invalidation commands from virtual to physical
device IDs.
- Enhancements to IOMMU_HWPT_INVALIDATE and IOMMU_HWPT_ALLOC to work with
the VIOMMU
- ARM SMMuv3 support for nested translation. Using the VIOMMU and VDEVICE
the driver can model this HW's behavior for nested translation. This
includes a shared branch from Will.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRRRCHOFoQz/8F5bUaFwuHvBreFYQUCZzzKKwAKCRCFwuHvBreF
YaCMAQDOQAgw87eUYKnY7vFodlsTUA2E8uSxDmk6nPWySd0NKwD/flOP85MdEs9O
Ot+RoL4/J3IyNH+eg5kN68odmx4mAw8=
=ec8x
-----END PGP SIGNATURE-----
Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe:
"Several new features and uAPI for iommufd:
- IOMMU_IOAS_MAP_FILE allows passing in a file descriptor as the
backing memory for an iommu mapping. To date VFIO/iommufd have used
VMA's and pin_user_pages(), this now allows using memfds and
memfd_pin_folios(). Notably this creates a pure folio path from the
memfd to the iommu page table where memory is never broken down to
PAGE_SIZE.
- IOMMU_IOAS_CHANGE_PROCESS moves the pinned page accounting between
two processes. Combined with the above this allows iommufd to
support a VMM re-start using exec() where something like qemu would
exec() a new version of itself and fd pass the memfds/iommufd/etc
to the new process. The memfd allows DMA access to the memory to
continue while the new process is getting setup, and the
CHANGE_PROCESS updates all the accounting.
- Support for fault reporting to userspace on non-PRI HW, such as ARM
stall-mode embedded devices.
- IOMMU_VIOMMU_ALLOC introduces the concept of a HW/driver backed
virtual iommu. This will be used by VMMs to access hardware
features that are contained with in a VM. The first use is to
inform the kernel of the virtual SID to physical SID mapping when
issuing SID based invalidation on ARM. Further uses will tie HW
features that are directly accessed by the VM, such as invalidation
queue assignment and others.
- IOMMU_VDEVICE_ALLOC informs the kernel about the mapping of virtual
device to physical device within a VIOMMU. Minimially this is used
to translate VM issued cache invalidation commands from virtual to
physical device IDs.
- Enhancements to IOMMU_HWPT_INVALIDATE and IOMMU_HWPT_ALLOC to work
with the VIOMMU
- ARM SMMuv3 support for nested translation. Using the VIOMMU and
VDEVICE the driver can model this HW's behavior for nested
translation. This includes a shared branch from Will"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (51 commits)
iommu/arm-smmu-v3: Import IOMMUFD module namespace
iommufd: IOMMU_IOAS_CHANGE_PROCESS selftest
iommufd: Add IOMMU_IOAS_CHANGE_PROCESS
iommufd: Lock all IOAS objects
iommufd: Export do_update_pinned
iommu/arm-smmu-v3: Support IOMMU_HWPT_INVALIDATE using a VIOMMU object
iommu/arm-smmu-v3: Allow ATS for IOMMU_DOMAIN_NESTED
iommu/arm-smmu-v3: Use S2FWB for NESTED domains
iommu/arm-smmu-v3: Support IOMMU_DOMAIN_NESTED
iommu/arm-smmu-v3: Support IOMMU_VIOMMU_ALLOC
Documentation: userspace-api: iommufd: Update vDEVICE
iommufd/selftest: Add vIOMMU coverage for IOMMU_HWPT_INVALIDATE ioctl
iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_CACHE test command
iommufd/selftest: Add mock_viommu_cache_invalidate
iommufd/viommu: Add iommufd_viommu_find_dev helper
iommu: Add iommu_copy_struct_from_full_user_array helper
iommufd: Allow hwpt_id to carry viommu_id for IOMMU_HWPT_INVALIDATE
iommu/viommu: Add cache_invalidate to iommufd_viommu_ops
iommufd/selftest: Add IOMMU_VDEVICE_ALLOC test coverage
iommufd/viommu: Add IOMMUFD_OBJ_VDEVICE and IOMMU_VDEVICE_ALLOC ioctl
...
Remove the use of contractions and use proper punctuation in #error
directive messages that discourage the direct inclusion of header files.
Link: https://lkml.kernel.org/r/20241105032231.28833-1-natanielfarzan@gmail.com
Signed-off-by: Nataniel Farzan <natanielfarzan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
arch_init_invariance_cppc() is called at the end of
acpi_cppc_processor_probe() in order to configure frequency invariance
based upon the values from _CPC.
This however doesn't work on AMD CPPC shared memory designs that have
AMD preferred cores enabled because _CPC needs to be analyzed from all
cores to judge if preferred cores are enabled.
This issue manifests to users as a warning since commit 21fb59ab4b
("ACPI: CPPC: Adjust debug messages in amd_set_max_freq_ratio() to warn"):
```
Could not retrieve highest performance (-19)
```
However the warning isn't the cause of this, it was actually
commit 279f838a61 ("x86/amd: Detect preferred cores in
amd_get_boost_ratio_numerator()") which exposed the issue.
To fix this problem, change arch_init_invariance_cppc() into a new weak
symbol that is called at the end of acpi_processor_driver_init().
Each architecture that supports it can declare the symbol to override
the weak one.
Define it for x86, in arch/x86/kernel/acpi/cppc.c, and for all of the
architectures using the generic arch_topology.c code.
Fixes: 279f838a61 ("x86/amd: Detect preferred cores in amd_get_boost_ratio_numerator()")
Reported-by: Ivan Shapovalov <intelfx@intelfx.name>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219431
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://patch.msgid.link/20241104222855.3959267-1-superm1@kernel.org
[ rjw: Changelog edit ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit c4f5c083d24df9ddd71d5782c0988408cf0fc1ab
The IORT spec, Issue E.f (April 2024), adds a new CANWBS bit to the Memory
Access Flag field in the Memory Access Properties table, mainly for a PCI
Root Complex.
This CANWBS defines the coherency of memory accesses to be not marked IOWB
cacheable/shareable. Its value further implies the coherency impact from a
pair of mismatched memory attributes (e.g. in a nested translation case):
0x0: Use of mismatched memory attributes for accesses made by this
device may lead to a loss of coherency.
0x1: Coherency of accesses made by this device to locations in
Conventional memory are ensured as follows, even if the memory
attributes for the accesses presented by the device or provided by
the SMMU are different from Inner and Outer Write-back cacheable,
Shareable.
Link: https://github.com/acpica/acpica/commit/c4f5c083
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Acked-by: Hanjun Guo <guohanjun@huawei.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Donald Dutile <ddutile@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/2-v4-9e99b76f3518+3a8-smmuv3_nesting_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
The following BUG was triggered:
=============================
[ BUG: Invalid wait context ]
6.12.0-rc2-XXX #406 Not tainted
-----------------------------
kworker/1:1/62 is trying to lock:
ffffff8801593030 (&cpc_ptr->rmw_lock){+.+.}-{3:3}, at: cpc_write+0xcc/0x370
other info that might help us debug this:
context-{5:5}
2 locks held by kworker/1:1/62:
#0: ffffff897ef5ec98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x50
#1: ffffff880154e238 (&sg_policy->update_lock){....}-{2:2}, at: sugov_update_shared+0x3c/0x280
stack backtrace:
CPU: 1 UID: 0 PID: 62 Comm: kworker/1:1 Not tainted 6.12.0-rc2-g9654bd3e8806 #406
Workqueue: 0x0 (events)
Call trace:
dump_backtrace+0xa4/0x130
show_stack+0x20/0x38
dump_stack_lvl+0x90/0xd0
dump_stack+0x18/0x28
__lock_acquire+0x480/0x1ad8
lock_acquire+0x114/0x310
_raw_spin_lock+0x50/0x70
cpc_write+0xcc/0x370
cppc_set_perf+0xa0/0x3a8
cppc_cpufreq_fast_switch+0x40/0xc0
cpufreq_driver_fast_switch+0x4c/0x218
sugov_update_shared+0x234/0x280
update_load_avg+0x6ec/0x7b8
dequeue_entities+0x108/0x830
dequeue_task_fair+0x58/0x408
__schedule+0x4f0/0x1070
schedule+0x54/0x130
worker_thread+0xc0/0x2e8
kthread+0x130/0x148
ret_from_fork+0x10/0x20
sugov_update_shared() locks a raw_spinlock while cpc_write() locks a
spinlock.
To have a correct wait-type order, update rmw_lock to a raw spinlock and
ensure that interrupts will be disabled on the CPU holding it.
Fixes: 60949b7b80 ("ACPI: CPPC: Fix MASK_VAL() usage")
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Link: https://patch.msgid.link/20241028125657.1271512-1-pierre.gondois@arm.com
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- Remove LATENCY_MULTIPLIER from cpufreq (Qais Yousef).
- Add support for Granite Rapids and Sierra Forest in OOB mode to the
intel_pstate cpufreq driver (Srinivas Pandruvada).
- Add basic support for CPU capacity scaling on x86 and make the
intel_pstate driver set asymmetric CPU capacity on hybrid systems
without SMT (Rafael Wysocki).
- Add missing MODULE_DESCRIPTION() macros to the powerpc cpufreq
driver (Jeff Johnson).
- Several OF related cleanups in cpufreq drivers (Rob Herring).
- Enable COMPILE_TEST for ARM drivers (Rob Herrring).
- Introduce quirks for syscon failures and use socinfo to get revision
for TI cpufreq driver (Dhruva Gole, Nishanth Menon).
- Minor cleanups in amd-pstate driver (Anastasia Belova, Dhananjay
Ugwekar).
- Minor cleanups for loongson, cpufreq-dt and powernv cpufreq drivers
(Danila Tikhonov, Huacai Chen, and Liu Jing).
- Make amd-pstate validate return of any attempt to update EPP limits,
which fixes the masking hardware problems (Mario Limonciello).
- Move the calculation of the AMD boost numerator outside of amd-pstate,
correcting acpi-cpufreq on systems with preferred cores (Mario
Limonciello).
- Harden preferred core detection in amd-pstate to avoid potential
false positives (Mario Limonciello).
- Add extra unit test coverage for mode state machine (Mario
Limonciello).
- Fix an "Uninitialized variables" issue in amd-pstste (Qianqiang Liu).
- Add Granite Rapids Xeon support to intel_idle (Artem Bityutskiy).
- Disable promotion to C1E on Jasper Lake and Elkhart Lake in
intel_idle (Kai-Heng Feng).
- Use scoped device node handling to fix missing of_node_put() and
simplify walking OF children in the riscv-sbi cpuidle driver (Krzysztof
Kozlowski).
- Remove dead code from cpuidle_enter_state() (Dhruva Gole).
- Change an error pointer to NULL to fix error handling in the
intel_rapl power capping driver (Dan Carpenter).
- Fix off by one in get_rpi() in the intel_rapl power capping
driver (Dan Carpenter).
- Add support for ArrowLake-U to the intel_rapl power capping
driver (Sumeet Pawnikar).
- Fix the energy-pkg event for AMD CPUs in the intel_rapl power capping
driver (Dhananjay Ugwekar).
- Add support for AMD family 1Ah processors to the intel_rapl power
capping driver (Dhananjay Ugwekar).
- Remove unused stub for saveable_highmem_page() and remove deprecated
macros from power management documentation (Andy Shevchenko).
- Use ysfs_emit() and sysfs_emit_at() in "show" functions in the PM
sysfs interface (Xueqin Luo).
- Update the maintainers information for the operating-points-v2-ti-cpu DT
binding (Dhruva Gole).
- Drop unnecessary of_match_ptr() from ti-opp-supply (Rob Herring).
- Add missing MODULE_DESCRIPTION() macros to devfreq governors (Jeff
Johnson).
- Use devm_clk_get_enabled() in the exynos-bus devfreq driver (Anand
Moon).
- Use of_property_present() instead of of_get_property() in the imx-bus
devfreq driver (Rob Herring).
- Update directory handling and installation process in the pm-graph
Makefile and add .gitignore to ignore sleepgraph.py artifacts to
pm-graph (Amit Vadhavana, Yo-Jung Lin).
- Make cpupower display residency value in idle-info (Aboorva
Devarajan).
- Add missing powercap_set_enabled() stub function to cpupower (John
B. Wyatt IV).
- Add SWIG support to cpupower (John B. Wyatt IV).
-----BEGIN PGP SIGNATURE-----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=JM+K
-----END PGP SIGNATURE-----
Merge tag 'pm-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"By the number of new lines of code, the most visible change here is
the addition of hybrid CPU capacity scaling support to the
intel_pstate driver. Next are the amd-pstate driver changes related to
the calculation of the AMD boost numerator and preferred core
detection.
As far as new hardware support is concerned, the intel_idle driver
will now handle Granite Rapids Xeon processors natively, the
intel_rapl power capping driver will recognize family 1Ah of AMD
processors and Intel ArrowLake-U chipos, and intel_pstate will handle
Granite Rapids and Sierra Forest chips in the out-of-band (OOB) mode.
Apart from the above, there is a usual collection of assorted fixes
and code cleanups in many places and there are tooling updates.
Specifics:
- Remove LATENCY_MULTIPLIER from cpufreq (Qais Yousef)
- Add support for Granite Rapids and Sierra Forest in OOB mode to the
intel_pstate cpufreq driver (Srinivas Pandruvada)
- Add basic support for CPU capacity scaling on x86 and make the
intel_pstate driver set asymmetric CPU capacity on hybrid systems
without SMT (Rafael Wysocki)
- Add missing MODULE_DESCRIPTION() macros to the powerpc cpufreq
driver (Jeff Johnson)
- Several OF related cleanups in cpufreq drivers (Rob Herring)
- Enable COMPILE_TEST for ARM drivers (Rob Herrring)
- Introduce quirks for syscon failures and use socinfo to get
revision for TI cpufreq driver (Dhruva Gole, Nishanth Menon)
- Minor cleanups in amd-pstate driver (Anastasia Belova, Dhananjay
Ugwekar)
- Minor cleanups for loongson, cpufreq-dt and powernv cpufreq drivers
(Danila Tikhonov, Huacai Chen, and Liu Jing)
- Make amd-pstate validate return of any attempt to update EPP
limits, which fixes the masking hardware problems (Mario
Limonciello)
- Move the calculation of the AMD boost numerator outside of
amd-pstate, correcting acpi-cpufreq on systems with preferred cores
(Mario Limonciello)
- Harden preferred core detection in amd-pstate to avoid potential
false positives (Mario Limonciello)
- Add extra unit test coverage for mode state machine (Mario
Limonciello)
- Fix an "Uninitialized variables" issue in amd-pstste (Qianqiang
Liu)
- Add Granite Rapids Xeon support to intel_idle (Artem Bityutskiy)
- Disable promotion to C1E on Jasper Lake and Elkhart Lake in
intel_idle (Kai-Heng Feng)
- Use scoped device node handling to fix missing of_node_put() and
simplify walking OF children in the riscv-sbi cpuidle driver
(Krzysztof Kozlowski)
- Remove dead code from cpuidle_enter_state() (Dhruva Gole)
- Change an error pointer to NULL to fix error handling in the
intel_rapl power capping driver (Dan Carpenter)
- Fix off by one in get_rpi() in the intel_rapl power capping driver
(Dan Carpenter)
- Add support for ArrowLake-U to the intel_rapl power capping driver
(Sumeet Pawnikar)
- Fix the energy-pkg event for AMD CPUs in the intel_rapl power
capping driver (Dhananjay Ugwekar)
- Add support for AMD family 1Ah processors to the intel_rapl power
capping driver (Dhananjay Ugwekar)
- Remove unused stub for saveable_highmem_page() and remove
deprecated macros from power management documentation (Andy
Shevchenko)
- Use ysfs_emit() and sysfs_emit_at() in "show" functions in the PM
sysfs interface (Xueqin Luo)
- Update the maintainers information for the
operating-points-v2-ti-cpu DT binding (Dhruva Gole)
- Drop unnecessary of_match_ptr() from ti-opp-supply (Rob Herring)
- Add missing MODULE_DESCRIPTION() macros to devfreq governors (Jeff
Johnson)
- Use devm_clk_get_enabled() in the exynos-bus devfreq driver (Anand
Moon)
- Use of_property_present() instead of of_get_property() in the
imx-bus devfreq driver (Rob Herring)
- Update directory handling and installation process in the pm-graph
Makefile and add .gitignore to ignore sleepgraph.py artifacts to
pm-graph (Amit Vadhavana, Yo-Jung Lin)
- Make cpupower display residency value in idle-info (Aboorva
Devarajan)
- Add missing powercap_set_enabled() stub function to cpupower (John
B. Wyatt IV)
- Add SWIG support to cpupower (John B. Wyatt IV)"
* tag 'pm-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (62 commits)
cpufreq/amd-pstate-ut: Fix an "Uninitialized variables" issue
cpufreq/amd-pstate-ut: Add test case for mode switches
cpufreq/amd-pstate: Export symbols for changing modes
amd-pstate: Add missing documentation for `amd_pstate_prefcore_ranking`
cpufreq: amd-pstate: Add documentation for `amd_pstate_hw_prefcore`
cpufreq: amd-pstate: Optimize amd_pstate_update_limits()
cpufreq: amd-pstate: Merge amd_pstate_highest_perf_set() into amd_get_boost_ratio_numerator()
x86/amd: Detect preferred cores in amd_get_boost_ratio_numerator()
x86/amd: Move amd_get_highest_perf() out of amd-pstate
ACPI: CPPC: Adjust debug messages in amd_set_max_freq_ratio() to warn
ACPI: CPPC: Drop check for non zero perf ratio
x86/amd: Rename amd_get_highest_perf() to amd_get_boost_ratio_numerator()
ACPI: CPPC: Adjust return code for inline functions in !CONFIG_ACPI_CPPC_LIB
x86/amd: Move amd_get_highest_perf() from amd.c to cppc.c
PM: hibernate: Remove unused stub for saveable_highmem_page()
pm:cpupower: Add error warning when SWIG is not installed
MAINTAINERS: Add Maintainers for SWIG Python bindings
pm:cpupower: Include test_raw_pylibcpupower.py
pm:cpupower: Add SWIG bindings files for libcpupower
pm:cpupower: Add missing powercap_set_enabled() stub function
...
Merge ACPI backlight (video) driver update, ACPI resource management
updates, an ACPI processor aggregator device (PAD) driver fix, and
miscellaneous ACPI updates for 6.12-rc1:
- Add force_vendor quirk for Panasonic Toughbook CF-18 in the ACPI
backlight driver (Hans de Goede).
- Make the DMI checks related to backlight handling on Lenovo Yoga
Tab 3 X90F less strict (Hans de Goede).
- Enforce native backlight handling on Apple MacbookPro9,2 (Esther
Shimanovich).
- Add IRQ override quirks for Asus Vivobook Go E1404GAB and MECHREV
GM7XG0M, and refine the TongFang GMxXGxx quirk (Li Chen, Tamim Khan,
Werner Sembach).
- Fix crash in exit_round_robin() in the ACPI processor aggregator
device (PAD) driver (Seiji Nishikawa).
- Define and use symbols for device and class name lengths in the ACPI
bus type code and make the code use strscpy() instead of strcpy() in
several places (Muhammad Qasim Abdul Majeed).
* acpi-video:
ACPI: video: Add force_vendor quirk for Panasonic Toughbook CF-18
ACPI: x86: Make Lenovo Yoga Tab 3 X90F DMI match less strict
ACPI: video: Make Lenovo Yoga Tab 3 X90F DMI match less strict
ACPI: video: force native for Apple MacbookPro9,2
* acpi-resource:
ACPI: resource: Add another DMI match for the TongFang GMxXGxx
ACPI: resource: Skip IRQ override on Asus Vivobook Go E1404GAB
ACPI: resource: Do IRQ override on MECHREV GM7XG0M
* acpi-pad:
ACPI: PAD: fix crash in exit_round_robin()
* acpi-misc:
ACPI: button: Use strscpy() instead of strcpy()
ACPI: bus: Define and use symbols for device and class name lengths
ACPI: battery : Use strscpy() instead of strcpy()
ACPI: acpi_processor: Use strscpy instead() of strcpy()
ACPI: PAD: Use strscpy() instead of strcpy()
ACPI: AC: Use strscpy() instead of strcpy()
Merge ACPI battery driver, ACPI PMIC driver, ACPI processor driver and
ACPI CPPC library updates for 6.12-rc1:
- Use the driver core for the async probing management in the ACPI
battery driver (Thomas Weißschuh).
- Remove redundant initalizations of a local variable to NULL from the
ACPI battery driver (Ilpo Järvinen).
- Use strscpy() instead of strcpy() in the ACPI battery driver (Muhammad
Qasim Abdul Majeed).
- Remove unneeded check in tps68470_pmic_opregion_probe() (Aleksandr
Mishin).
- Add support for setting the EPP register through the ACPI CPPC sysfs
interface if it is in FFH (Mario Limonciello).
- Fix MASK_VAL() usage in the ACPI CPPC library (Clément Léger).
- Reduce the log level of a per-CPU message about idle states in the
ACPI processor driver (Li RongQing).
* acpi-battery:
ACPI: battery: use driver core managed async probing
ACPI: battery: Remove redundant NULL initalizations
ACPI: battery: Use strscpy() instead of strcpy()
* acpi-pmic:
ACPI: PMIC: Remove unneeded check in tps68470_pmic_opregion_probe()
* acpi-cppc:
ACPI: CPPC: Add support for setting EPP register in FFH
ACPI: CPPC: Fix MASK_VAL() usage
* acpi-processor:
ACPI: processor: Reduce the log level of a per-CPU message about idle states
Merge an ACPI EC driver update, ACPI sysfs interface updates, an ACPI
library function update, and an ACPI APD driver update for 6.12-rc1:
- Do not release locks during operation region accesses in the ACPI EC
driver (Rafael Wysocki).
- Fix up the _STR handling in the ACPI device object sysfs interface,
make it represent the device object attributes as an attribute group
and make it rely on driver core functionality for sysfs attrubute
management (Thomas Weißschuh).
- Extend error messages printed to the kernel log when acpi_evaluate_dsm()
fails to include revision and function number (David Wang).
- Add a new AMDI0015 platform device ID to the ACPi APD driver for AMD
SoCs (Shyam Sundar S K).
* acpi-ec:
ACPI: EC: Do not release locks during operation region accesses
* acpi-sysfs:
ACPI: sysfs: remove return value of acpi_device_setup_files()
ACPI: sysfs: manage sysfs attributes through device core
ACPI: sysfs: manage attributes as attribute_group
ACPI: sysfs: evaluate _STR on each sysfs access
ACPI: sysfs: validate return type of _STR method
* acpi-utils:
ACPI: utils: Add rev/func to message when acpi_evaluate_dsm() fails
* acpi-soc:
ACPI: APD: Add AMDI0015 as platform device
Merge ACPI and irqchip updates related to external interrupt controller
support on RISC-V:
- Add ACPI device enumeration support for interrupt controller probing
including taking dependencies into account (Sunil V L).
- Implement ACPI-based interrupt controller probing on RISC-V (Sunil V L).
- Add ACPI support for AIA in riscv-intc and add ACPI support to
riscv-imsic, riscv-aplic, and sifive-plic (Sunil V L).
* acpi-riscv:
irqchip/sifive-plic: Add ACPI support
irqchip/riscv-aplic: Add ACPI support
irqchip/riscv-imsic: Add ACPI support
irqchip/riscv-imsic-state: Create separate function for DT
irqchip/riscv-intc: Add ACPI support for AIA
ACPI: RISC-V: Implement function to add implicit dependencies
ACPI: RISC-V: Initialize GSI mapping structures
ACPI: RISC-V: Implement function to reorder irqchip probe entries
ACPI: RISC-V: Implement PCI related functionality
ACPI: pci_link: Clear the dependencies after probe
ACPI: bus: Add RINTC IRQ model for RISC-V
ACPI: scan: Define weak function to populate dependencies
ACPI: scan: Add RISC-V interrupt controllers to honor list
ACPI: scan: Refactor dependency creation
ACPI: bus: Add acpi_riscv_init() function
ACPI: scan: Add a weak arch_sort_irqchip_probe() to order the IRQCHIP probe
arm64: PCI: Migrate ACPI related functions to pci-acpi.c
Merge ACPICA updates for 6.12-rc1:
- Check return value in acpi_db_convert_to_package() (Pei Xiao).
- Detect FACS and allow setting the waking vector on reduced-hardware
ACPI platforms (Jiaqing Zhao).
- Allow ACPICA to represent semaphores as integers (Adrien Destugues).
- Complete CXL 3.0 CXIMS structures support in ACPICA (Zhang Rui).
- Make ACPICA support SPCR version 4 and add RISC-V SBI Subtype to
DBG2 (Sia Jee Heng).
- Implement the Dword_PCC Resource Descriptor Macro in ACPICA (Jose
Marinho).
- Correct the typo in struct acpi_mpam_msc_node member (Punit Agrawal).
- Implement ACPI_WARNING_ONCE() and ACPI_ERROR_ONCE() and use them to
prevent a Stall() violation warning from being printed every time
this takes place (Vasily Khoruzhick).
- Allow PCC Data Type in MCTP resource (Adam Young).
- Fix memory leaks on acpi_ps_get_next_namepath()
and acpi_ps_get_next_field() failures (Armin Wolf).
- Add support for supressing leading zeros in hex strings when
converting them to integers and update integer-to-hex-string
conversions in ACPICA (Armin Wolf).
- Add support for Windows 11 22H2 _OSI string (Armin Wolf).
- Avoid warning for Dump Functions in ACPICA (Adam Lackorzynski).
- Add extended linear address mode to HMAT MSCIS in ACPICA (Dave
Jiang).
- Handle empty connection_node in iasl (Aleksandrs Vinarskis).
- Allow for more flexibility in _DSM args (Saket Dumbre).
- Setup for ACPICA release 20240827 (Saket Dumbre).
* acpica: (23 commits)
ACPICA: Setup for ACPICA release 20240827
ACPICA: Allow for more flexibility in _DSM args
ACPICA: iasl: handle empty connection_node
ACPICA: HMAT: Add extended linear address mode to MSCIS
ACPICA: Avoid warning for Dump Functions
ACPICA: Add support for Windows 11 22H2 _OSI string
ACPICA: Update integer-to-hex-string conversions
ACPICA: Add support for supressing leading zeros in hex strings
ACPICA: Allow for supressing leading zeros when using acpi_ex_convert_to_ascii()
ACPICA: Fix memory leak if acpi_ps_get_next_field() fails
ACPICA: Fix memory leak if acpi_ps_get_next_namepath() fails
ACPICA: Allow PCC Data Type in MCTP resource.
ACPICA: executer/exsystem: Don't nag user about every Stall() violating the spec
ACPICA: Implement ACPI_WARNING_ONCE and ACPI_ERROR_ONCE
ACPICA: MPAM: Correct the typo in struct acpi_mpam_msc_node member
ACPICA: Implement the Dword_PCC Resource Descriptor Macro
ACPICA: Headers: Add RISC-V SBI Subtype to DBG2
ACPICA: SPCR: Update the SPCR table to version 4
ACPICA: Complete CXL 3.0 CXIMS structures
ACPICA: haiku: Fix invalid value used for semaphores
...
* Move the calculation of the AMD boost numerator outside of
amd-pstate, correcting acpi-cpufreq on systems with preferred cores
* Harden preferred core detection to avoid potential false positives
* Add extra unit test coverage for mode state machine
-----BEGIN PGP SIGNATURE-----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=R4HZ
-----END PGP SIGNATURE-----
Merge tag 'amd-pstate-v6.12-2024-09-11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux
Merge the second round of amd-pstate changes for 6.12 from Mario
Limonciello:
"* Move the calculation of the AMD boost numerator outside of
amd-pstate, correcting acpi-cpufreq on systems with preferred cores
* Harden preferred core detection to avoid potential false positives
* Add extra unit test coverage for mode state machine"
* tag 'amd-pstate-v6.12-2024-09-11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux:
cpufreq/amd-pstate-ut: Fix an "Uninitialized variables" issue
cpufreq/amd-pstate-ut: Add test case for mode switches
cpufreq/amd-pstate: Export symbols for changing modes
amd-pstate: Add missing documentation for `amd_pstate_prefcore_ranking`
cpufreq: amd-pstate: Add documentation for `amd_pstate_hw_prefcore`
cpufreq: amd-pstate: Optimize amd_pstate_update_limits()
cpufreq: amd-pstate: Merge amd_pstate_highest_perf_set() into amd_get_boost_ratio_numerator()
x86/amd: Detect preferred cores in amd_get_boost_ratio_numerator()
x86/amd: Move amd_get_highest_perf() out of amd-pstate
ACPI: CPPC: Adjust debug messages in amd_set_max_freq_ratio() to warn
ACPI: CPPC: Drop check for non zero perf ratio
x86/amd: Rename amd_get_highest_perf() to amd_get_boost_ratio_numerator()
ACPI: CPPC: Adjust return code for inline functions in !CONFIG_ACPI_CPPC_LIB
x86/amd: Move amd_get_highest_perf() from amd.c to cppc.c
AMD systems that support preferred cores will use "166" as their
numerator for max frequency calculations instead of "255".
Add a function for detecting preferred cores by looking at the
highest perf value on all cores.
If preferred cores are enabled return 166 and if disabled the
value in the highest perf register. As the function will be called
multiple times, cache the values for the boost numerator and if
preferred cores will be enabled in global variables.
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
amd_pstate_get_highest_perf() is a helper used to get the highest perf
value on AMD systems. It's used in amd-pstate as part of preferred
core handling, but applicable for acpi-cpufreq as well.
Move it out to cppc handling code as amd_get_highest_perf().
Reviewed-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
The function name is ambiguous because it returns an intermediate value
for calculating maximum frequency rather than the CPPC 'Highest Perf'
register.
Rename the function to clarify its use and allow the function to return
errors. Adjust the consumer in acpi-cpufreq to catch errors.
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Checkpath emits the following warning:
```
WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
```
Adjust the code accordingly.
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
MASK_VAL() was added as a way to handle bit_offset and bit_width for
registers located in system memory address space. However, while suited
for reading, it does not work for writing and result in corrupted
registers when writing values with bit_offset > 0. Moreover, when a
register is collocated with another one at the same address but with a
different mask, the current code results in the other registers being
overwritten with 0s. The write procedure for SYSTEM_MEMORY registers
should actually read the value, mask it, update it and write it with the
updated value. Moreover, since registers can be located in the same
word, we must take care of locking the access before doing it. We should
potentially use a global lock since we don't know in if register
addresses aren't shared with another _CPC package but better not
encourage vendors to do so. Assume that registers can use the same word
inside a _CPC package and thus, use a per _CPC package lock.
Fixes: 2f4a4d63a1 ("ACPI: CPPC: Use access_width over bit_width for system memory accesses")
Signed-off-by: Clément Léger <cleger@rivosinc.com>
Link: https://patch.msgid.link/20240826101648.95654-1-cleger@rivosinc.com
[ rjw: Dropped redundant semicolon ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit aaa08569b81aa4d9ff59f91f00e589e98d499e6c
Redefine the 2 reserved bytes at offset 28 of Memory Side Cache Information
Structure as "Address Mode" and add defines of the new value.
* 0 - Reserved (Unkown Address Mode)
* 1 - Extended-linear (N direct-map aliases linearly mapped)
* 2..65535 - Reserved (Unknown Address Mode)
Link: https://github.com/acpica/acpica/commit/aaa08569
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit 2ad4e6e7c4118f4cdfcad321c930b836cec77406
In some cases it is not practical nor useful to nag user about some
firmware errors that they cannot fix. Add a macro that will print a
warning or error only once to be used in these cases.
Link: https://github.com/acpica/acpica/commit/2ad4e6e7
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit 3da3f7d776d17e9bfbb15de88317de8d7397ce38
A member of the struct acpi_mpam_msc_node that represents a Memory System
Controller node structure - num_resource_nodes has a typo. Fix the typo
No functional change.
Link: https://github.com/acpica/acpica/commit/3da3f7d7
Signed-off-by: Punit Agrawal <punit.agrawal@bytedance.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA commit 1eeff52124a45d5cd887ba5687bbad0116e4d211
The Microsoft Serial Port Console Redirection (SPCR) specification
revision 1.09 comprises additional fields [1]. The newly added fields
are:
- RISC-V SBI
- Precise Baud Rate
- namespace_string_length
- namespace_string_offset
- namespace_string
Additionaly, this code will support up to SPCR revision 1.10, as it
includes only minor wording changes.
Link: https://learn.microsoft.com/en-us/windows-hardware/drivers/serports/serial-port-console-redirection-table # [1]
Link: https://github.com/acpica/acpica/commit/1eeff521
Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
