Merge remote-tracking branch 'linux-pm/linux-next' into sound/upstream-20250708

Author: bardliao

Documentation/admin-guide/pm/cpufreq.rst

@@ -398,7 +398,9 @@ policy limits change after that.
 
 This governor does not do anything by itself.  Instead, it allows user space
 to set the CPU frequency for the policy it is attached to by writing to the
-``scaling_setspeed`` attribute of that policy.
+``scaling_setspeed`` attribute of that policy. Though the intention may be to
+set an exact frequency for the policy, the actual frequency may vary depending
+on hardware coordination, thermal and power limits, and other factors.
 
 ``schedutil``
 -------------

Documentation/driver-api/thermal/intel_dptf.rst

@@ -206,6 +206,15 @@ All these controls needs admin privilege to update.
 	Update a new temperature target in milli degree celsius for hardware to
 	use for the temperature control.
 
+``thermal_tolerance`` (RW)
+	This attribute ranges from 0 to 7, where 0 represents
+	the most aggressive control to avoid any temperature overshoots, and
+	7 represents a more graceful approach, favoring performance even at
+	the expense of temperature overshoots.
+	Note: This level may not scale linearly. For example, a value of 3 does
+	not necessarily imply a 50% improvement in performance compared to a
+	value of 0.
+
 Given that this is platform temperature control, it is expected that a
 single user-level manager owns and manages the controls. If multiple
 user-level software applications attempt to write different targets, it

Documentation/firmware-guide/acpi/apei/einj.rst

@@ -59,6 +59,9 @@ The following files belong to it:
   0x00000200        Platform Correctable
   0x00000400        Platform Uncorrectable non-fatal
   0x00000800        Platform Uncorrectable fatal
+  V2_0x00000001     EINJV2 Processor Error
+  V2_0x00000002     EINJV2 Memory Error
+  V2_0x00000004     EINJV2 PCI Express Error
   ================  ===================================
 
   The format of the file contents are as above, except present are only
@@ -88,6 +91,8 @@ The following files belong to it:
       Memory address and mask valid (param1 and param2).
     Bit 2
       PCIe (seg,bus,dev,fn) valid (see param4 below).
+    Bit 3
+      EINJv2 extension structure is valid
 
   If set to zero, legacy behavior is mimicked where the type of
   injection specifies just one bit set, and param1 is multiplexed.
@@ -122,6 +127,13 @@ The following files belong to it:
   this actually works depends on what operations the BIOS actually
   includes in the trigger phase.
 
+- component_id0 .. component_idN, component_syndrome0 .. component_syndromeN
+
+  These files are used to set the "Component Array" field
+  of the EINJv2 Extension Structure. Each holds a 128-bit
+  hex value. Writing just a newline to any of these files
+  sets an invalid (all-ones) value.
+
 CXL error types are supported from ACPI 6.5 onwards (given a CXL port
 is present). The EINJ user interface for CXL error types is at
 <debugfs mount point>/cxl. The following files belong to it:
@@ -194,6 +206,27 @@ An error injection example::
   # echo 0x8 > error_type			# Choose correctable memory error
   # echo 1 > error_inject			# Inject now
 
+An EINJv2 error injection example::
+
+  # cd /sys/kernel/debug/apei/einj
+  # cat available_error_type			# See which errors can be injected
+  0x00000002	Processor Uncorrectable non-fatal
+  0x00000008	Memory Correctable
+  0x00000010	Memory Uncorrectable non-fatal
+  V2_0x00000001	EINJV2 Processor Error
+  V2_0x00000002	EINJV2 Memory Error
+
+  # echo 0x12345000 > param1			# Set memory address for injection
+  # echo 0xfffffffffffff000 > param2		# Range - anywhere in this page
+  # echo 0x1 > component_id0			# First device ID
+  # echo 0x4 > component_syndrome0		# First error syndrome
+  # echo 0x2 > component_id1			# Second device ID
+  # echo 0x4 > component_syndrome1		# Second error syndrome
+  # echo '' > component_id2			# Mark id2 invalid to terminate list
+  # echo V2_0x2 > error_type			# Choose EINJv2 memory error
+  # echo 0xa > flags				# set flags to indicate EINJv2
+  # echo 1 > error_inject			# Inject now
+
 You should see something like this in dmesg::
 
   [22715.830801] EDAC sbridge MC3: HANDLING MCE MEMORY ERROR

Documentation/firmware-guide/acpi/gpio-properties.rst

@@ -6,7 +6,7 @@ _DSD Device Properties Related to GPIO
 
 With the release of ACPI 5.1, the _DSD configuration object finally
 allows names to be given to GPIOs (and other things as well) returned
-by _CRS.  Previously, we were only able to use an integer index to find
+by _CRS. Previously we were only able to use an integer index to find
 the corresponding GPIO, which is pretty error prone (it depends on
 the _CRS output ordering, for example).
 
@@ -49,11 +49,11 @@ index
 pin
   Pin in the GpioIo()/GpioInt() resource. Typically this is zero.
 active_low
-  If 1, the GPIO is marked as active_low.
+  If 1, the GPIO is marked as active-low.
 
 Since ACPI GpioIo() resource does not have a field saying whether it is
-active low or high, the "active_low" argument can be used here.  Setting
-it to 1 marks the GPIO as active low.
+active-low or active-high, the "active_low" argument can be used here.
+Setting it to 1 marks the GPIO as active-low.
 
 Note, active_low in _DSD does not make sense for GpioInt() resource and
 must be 0. GpioInt() resource has its own means of defining it.
@@ -231,8 +231,8 @@ In those cases ACPI device identification objects, _HID, _CID, _CLS, _SUB, _HRV,
 available to the driver can be used to identify the device and that is supposed
 to be sufficient to determine the meaning and purpose of all of the GPIO lines
 listed by the GpioIo()/GpioInt() resources returned by _CRS.  In other words,
-the driver is supposed to know what to use the GpioIo()/GpioInt() resources for
-once it has identified the device.  Having done that, it can simply assign names
+the driver is supposed to know what to use from the GpioIo()/GpioInt() resources
+for once it has identified the device. Having done that, it can simply assign names
 to the GPIO lines it is going to use and provide the GPIO subsystem with a
 mapping between those names and the ACPI GPIO resources corresponding to them.
 
@@ -252,9 +252,9 @@ question would look like this::
   static const struct acpi_gpio_params shutdown_gpio = { 0, 0, false };
 
   static const struct acpi_gpio_mapping bluetooth_acpi_gpios[] = {
-    { "reset-gpios", &reset_gpio, 1 },
-    { "shutdown-gpios", &shutdown_gpio, 1 },
-    { }
+      { "reset-gpios", &reset_gpio, 1 },
+      { "shutdown-gpios", &shutdown_gpio, 1 },
+      { }
   };
 
 Next, the mapping table needs to be passed as the second argument to
@@ -270,7 +270,7 @@ Using the _CRS fallback
 
 If a device does not have _DSD or the driver does not create ACPI GPIO
 mapping, the Linux GPIO framework refuses to return any GPIOs. This is
-because the driver does not know what it actually gets. For example if we
+because the driver does not know what it actually gets. For example, if we
 have a device like below::
 
   Device (BTH)
@@ -292,7 +292,7 @@ The driver might expect to get the right GPIO when it does::
 	...error handling...
 
 but since there is no way to know the mapping between "reset" and
-the GpioIo() in _CRS desc will hold ERR_PTR(-ENOENT).
+the GpioIo() in _CRS the desc will hold ERR_PTR(-ENOENT).
 
 The driver author can solve this by passing the mapping explicitly
 (this is the recommended way and it's documented in the above chapter).
@@ -318,15 +318,15 @@ Case 1::
   desc = gpiod_get(dev, "non-null-connection-id", flags);
   desc = gpiod_get_index(dev, "non-null-connection-id", index, flags);
 
+Case 1 assumes that corresponding ACPI device description must have
+defined device properties and will prevent from getting any GPIO resources
+otherwise.
+
 Case 2::
 
   desc = gpiod_get(dev, NULL, flags);
   desc = gpiod_get_index(dev, NULL, index, flags);
 
-Case 1 assumes that corresponding ACPI device description must have
-defined device properties and will prevent to getting any GPIO resources
-otherwise.
-
 Case 2 explicitly tells GPIO core to look for resources in _CRS.
 
 Be aware that gpiod_get_index() in cases 1 and 2, assuming that there

drivers/acpi/Kconfig

@@ -394,6 +394,7 @@ config ACPI_TABLE_OVERRIDE_VIA_BUILTIN_INITRD
 
 config ACPI_DEBUG
 	bool "Debug Statements"
+	default y
 	help
 	  The ACPI subsystem can produce debug output.  Saying Y enables this
 	  output and increases the kernel size by around 50K.

drivers/acpi/acpi_processor.c

@@ -275,7 +275,7 @@ static inline int acpi_processor_hotadd_init(struct acpi_processor *pr,
 
 static int acpi_processor_get_info(struct acpi_device *device)
 {
-	union acpi_object object = { 0 };
+	union acpi_object object = { .processor = { 0 } };
 	struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
 	struct acpi_processor *pr = acpi_driver_data(device);
 	int device_declaration = 0;

drivers/acpi/acpica/extrace.c

@@ -136,9 +136,9 @@ acpi_ex_trace_point(acpi_trace_event_type type,
 
 	if (pathname) {
 		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-				  "%s %s [0x%p:%s] execution.\n",
+				  "%s %s [%s] execution.\n",
 				  acpi_ex_get_trace_event_name(type),
-				  begin ? "Begin" : "End", aml, pathname));
+				  begin ? "Begin" : "End", pathname));
 	} else {
 		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
 				  "%s %s [0x%p] execution.\n",

drivers/acpi/apei/apei-internal.h

@@ -131,7 +131,7 @@ static inline u32 cper_estatus_len(struct acpi_hest_generic_status *estatus)
 
 int apei_osc_setup(void);
 
-int einj_get_available_error_type(u32 *type);
+int einj_get_available_error_type(u32 *type, int einj_action);
 int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, u64 param3,
 		      u64 param4);
 int einj_cxl_rch_error_inject(u32 type, u32 flags, u64 param1, u64 param2,