Pull ACPI support fixes from Rafael Wysocki:
 "These fix a coding mistake in the ACPI TAD (Time and Alarm
  Device) driver introduced by one of its previous updates and
  get rid of the ugly #ifdef __KERNEL__ conditional compilation
  in acpi_ut_safe_strncpy() by redefining that function as an
  alias for strscpy_pad():

   - Add a missing ACPI_TAD_AC_WAKE capability check omitted by mistake
     to the ACPI TAD driver (Xu Rao)

   - Define acpi_ut_safe_strncpy() as an alias for strscpy_pad()
     which is viable because that function is only called from kernel
     code (Rafael Wysocki)"

* tag 'acpi-7.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPICA: Define acpi_ut_safe_strncpy() as strscpy_pad() alias
  ACPI: TAD: Check AC wake capability before enabling wakeup

Pull RISC-V fixes from Paul Walmsley:

 - Fix a crash when a kretprobe reads from the stack

 - Fix an issue with the build-time mcount sorter that broke ftrace

 - Fix the rv32 IRQ stack frame padding to match the ABI

 - Only defer IOMMU configuration during initialization. This avoids an
   issue where IOMMU configuration could be indefinitely deferred

 - Add the missing build salt to the vDSO

 - Now that RISC-V systems with higher numbers of cores are starting to
   become available, raise NR_CPUS for RISC-V to 256

 - Clean up some warnings from sparse caused by the RISC-V-optimized
   RAID6 code

 - Clean up our __cpu_up() code with a few minor fixes

* tag 'riscv-for-linus-7.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: probes: save original sp in rethook trampoline
  riscv: Fix 32-bit call_on_irq_stack() frame pointer ABI
  scripts/sorttable: Handle RISC-V patchable ftrace entries
  riscv: smp: use secs_to_jiffies in __cpu_up
  ACPI: RIMT: Only defer the IOMMU configuration in init stage
  riscv: Add build salt to the vDSO
  raid6: fix raid6_recov_rvv symbol undeclared warning
  raid6: fix riscv symbol undeclared warnigns
  riscv: Raise default NR_CPUS for 64BIT to 256

Merge an ACPI TAD (Time and Alarm Device) driver fix for 7.2-rc2.

* acpi-tad:
  ACPI: TAD: Check AC wake capability before enabling wakeup

Commit 292db66afd20 ("ACPICA: Unbreak tools build after switching over
to strscpy_pad()") added an #ifdef based on a __KERNEL__ check which is
sort of nasty to the acpi_ut_safe_strncpy() definition to unbreak ACPICA
tools builds broken by commit 97f7d3f9c9ac ("ACPICA: Replace strncpy()
with strscpy_pad() in acpi_ut_safe_strncpy()").  However, that #ifdef
effectively produces dead code when tools are built because they don't
call acpi_ut_safe_strncpy().

Accordingly, drop the existing definition of acpi_ut_safe_strncpy() and
define it as a strscpy_pad() alias.

Fixes: 292db66afd20 ("ACPICA: Unbreak tools build after switching over to strscpy_pad()")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[ rjw: Tweak the changelog ]
Link: https://patch.msgid.link/12941764.O9o76ZdvQC@rafael.j.wysocki
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Pull ACPI support fixes and cleanups from Rafael Wysocki:
 "These fix assorted issues and do cleanups in the ACPI support code,
  which includes a fix for tools build breakage related to strncpy()
  removal:

   - Unbreak ACPICA tools builds after switching over to using
     strscpy_pad() that is kernel-specific (Rafael Wysocki)

   - Fix module parameter file paths in comments in the ACPI code
     managing the general sysfs attributes (Zenghui Yu)

   - Update kerneldoc comments in the ACPI resource management code to
     follow the common style (Andy Shevchenko)

   - Fix inverted interface check in ipmi_bmc_gone() that may cause ACPI
     IPMI interfaces to be mishandled (Xu Rao)

   - Add __cpuidle annotation to idle state management functions related
     to ACPI _LPI to avoid trace-induced RCU warnings (Li RongQing)"

* tag 'acpi-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: processor_idle: Mark LPI enter functions as __cpuidle
  ACPICA: Unbreak tools build after switching over to strscpy_pad()
  ACPI: IPMI: Fix inverted interface check in ipmi_bmc_gone()
  ACPI: resource: Amend kernel-doc style
  ACPI: sysfs: Fix path of module parameters in comments

Merge an update of comments regarding the ACPI sysfs code, a kernel-doc
style fixup update of ACPI resource management, and ACPI IPMI driver
fix, and an ACPI processor driver fix for 7.2-rc1:

 - Fix module parameter file paths in comments in the ACPI code managing
   the general sysfs attributes (Zenghui Yu)

 - Update kerneldoc comments in the ACPI resource management code to
   follow the common style (Andy Shevchenko)

 - Fix inverted interface check in ipmi_bmc_gone() which may cause ACPI
   IPMI interfaces to be mishandled (Xu Rao)

 - Add __cpuidle to idle state management functions related to ACPI _LPI
   to avoid trace-induced RCU warnings (Li RongQing)

* acpi-sysfs:
  ACPI: sysfs: Fix path of module parameters in comments

* acpi-resource:
  ACPI: resource: Amend kernel-doc style

* acpi-driver:
  ACPI: IPMI: Fix inverted interface check in ipmi_bmc_gone()

* acpi-processor:
  ACPI: processor_idle: Mark LPI enter functions as __cpuidle

The IOMMU configuration will be deferred if the IOMMU driver
isn't probed by the time. Make this deferral only in the
initialization stage with driver_deferred_probe_check_state().
Otherwise the devices depends on IOMMU will be deferred forever
in case the IOMMU device probe failed or it doesn't appear in
the ACPI namespace.

Fixes: 8f7729552582 ("ACPI: RISC-V: Add support for RIMT")
Signed-off-by: Yicong Yang <yang.yicong@picoheart.com>
Link: https://patch.msgid.link/20260625094702.11558-1-yang.yicong@picoheart.com
[pjw@kernel.org: added Fixes line]
Signed-off-by: Paul Walmsley <pjw@kernel.org>

ACPI_TAD_AC_WAKE is a non-zero bit definition, so testing the macro
itself is always true. As a result, every TAD device is initialized as
a system wakeup device, including RTC-only devices and devices whose
wake capability bits were cleared because _PRW is absent.

Test the capability value returned by _GCP instead. This keeps
RTC-only TAD devices usable without advertising a wakeup capability
that the firmware does not provide.

Fixes: 6c711fde3a1c ("ACPI: TAD: Support RTC without wakeup")
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Link: https://patch.msgid.link/961A84FF37B50665+20260625132903.2840457-1-raoxu@uniontech.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

When function tracing or Kprobes is enabled, entering an ACPI Low
Power Idle (LPI) state triggers the following RCU splat:

  RCU not on for: acpi_idle_lpi_enter+0x4/0xd8
  WARNING: CPU: 8 PID: 0 at include/linux/trace_recursion.h:162 function_trace_call+0x1e8/0x228

The acpi_idle_lpi_enter() function is invoked within the cpuidle
path after RCU has already been disabled for the current local CPU.
Consequently, ftrace's function_trace_call() expects RCU to be
actively watching before recording trace data, emitting a warning
if it is not.

Fix this by annotating acpi_idle_lpi_enter(), the generic __weak
stub, and the RISC-V implementation of acpi_processor_ffh_lpi_enter()
with __cpuidle. This moves these functions into the '.cpuidle.text'
section, implicitly disabling ftrace instrumentation (notrace) along
this sensitive path and preventing trace-induced RCU warnings during
idle entry.

Fixes: a36a7fecfe60 ("ACPI / processor_idle: Add support for Low Power Idle(LPI) states")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: lihuisong@huawei.com
Link: https://patch.msgid.link/20260616072617.2272-1-lirongqing@baidu.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Commit 97f7d3f9c9ac ("ACPICA: Replace strncpy() with strscpy_pad() in
acpi_ut_safe_strncpy()") switched over the ACPICA code in the kernel to
using strscpy_pad() instead of a combination of strncpy() and manual
NUL-termination of the destination string, but it overlooked the fact
that tools also use the code in question and strscpy_pad() is not
defined in those builds.

Address that by using the original ACPICA code in non-kernel builds.

Fixes: 97f7d3f9c9ac ("ACPICA: Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy()")
Reported-by: Jiri Slaby <jirislaby@kernel.org>
Closes: https://lore.kernel.org/all/79e9e913-0fb1-4110-804b-c3b5d0edafe4@kernel
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Kees Cook <kees@kernel.org>
[ rjw: Fixed up the number of added code lines ]
Link: https://patch.msgid.link/12923581.O9o76ZdvQC@rafael.j.wysocki
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>