diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-firmware-acpi')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-acpi | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi index 5249ad5a96d9..72e7c9161ce7 100644 --- a/Documentation/ABI/testing/sysfs-firmware-acpi +++ b/Documentation/ABI/testing/sysfs-firmware-acpi @@ -108,15 +108,15 @@ Description: number of a "General Purpose Events" (GPE). A GPE vectors to a specified handler in AML, which - can do a anything the BIOS writer wants from + can do anything the BIOS writer wants from OS context. GPE 0x12, for example, would vector to a level or edge handler called _L12 or _E12. The handler may do its business and return. - Or the handler may send send a Notify event + Or the handler may send a Notify event to a Linux device driver registered on an ACPI device, such as a battery, or a processor. - To figure out where all the SCI's are coming from, + To figure out where all the SCIs are coming from, /sys/firmware/acpi/interrupts contains a file listing every possible source, and the count of how many times it has triggered:: @@ -248,3 +248,24 @@ Description: # cat ff_pwr_btn 7 enabled +What: /sys/firmware/acpi/memory_ranges/rangeX +Date: February 2025 +Contact: Tony Luck <tony.luck@intel.com> +Description: + On systems with the ACPI MRRM table reports the parameters for + each range. + + base: Starting system physical address. + + length: Length of this range in bytes. + + node: NUMA node that this range belongs to. Negative numbers + indicate that the node number could not be determined (e.g + for an address range that is reserved for future hot add of + memory). + + local_region_id: ID associated with access by agents + local to this range of addresses. + + remote_region_id: ID associated with access by agents + non-local to this range of addresses. |