| Message ID | 20250429202412.380637-5-tony.luck@intel.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add interfaces for ACPI MRRM table | expand |
Hi, Tony, On 4/29/25 13:24, Tony Luck wrote: > Initial implementation provides enumeration of the address ranges > NUMA node numbers, and BIOS assigned region IDs for each range. > > Signed-off-by: Tony Luck <tony.luck@intel.com> > --- > Documentation/ABI/testing/sysfs-firmware-acpi | 21 +++++++++++++++++++ > 1 file changed, 21 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi > index 5249ad5a96d9..fffba38f9ce1 100644 > --- a/Documentation/ABI/testing/sysfs-firmware-acpi > +++ b/Documentation/ABI/testing/sysfs-firmware-acpi > @@ -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. Is there a need to explain what's "X" here? The "X" is not a number directly reported by MRRM, right? Maybe something like "range ID is enumerated from MRRM starting from 0."? > + > + 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. Thanks. -Fenghua
On Sun, May 04, 2025 at 11:34:51PM -0700, Fenghua Yu wrote: > Hi, Tony, > > On 4/29/25 13:24, Tony Luck wrote: > > Initial implementation provides enumeration of the address ranges > > NUMA node numbers, and BIOS assigned region IDs for each range. > > > > Signed-off-by: Tony Luck <tony.luck@intel.com> > > --- > > Documentation/ABI/testing/sysfs-firmware-acpi | 21 +++++++++++++++++++ > > 1 file changed, 21 insertions(+) > > > > diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi > > index 5249ad5a96d9..fffba38f9ce1 100644 > > --- a/Documentation/ABI/testing/sysfs-firmware-acpi > > +++ b/Documentation/ABI/testing/sysfs-firmware-acpi > > @@ -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. > > Is there a need to explain what's "X" here? The "X" is not a number directly > reported by MRRM, right? > > Maybe something like "range ID is enumerated from MRRM starting from 0."? I'm not sure about this one. "X" in the ABI documentation files is a standard notation for "there are several of these with a number for each". When the number does refer to some physical object, then there may be a need to describe it. But if it is simply a counter to give a separate name for each one of some repeating thing ... then I don't think it helps to add additional explanation. > > > + > > + 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. > > Thanks. > > -Fenghua -Tony
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi index 5249ad5a96d9..fffba38f9ce1 100644 --- a/Documentation/ABI/testing/sysfs-firmware-acpi +++ b/Documentation/ABI/testing/sysfs-firmware-acpi @@ -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.
Initial implementation provides enumeration of the address ranges NUMA node numbers, and BIOS assigned region IDs for each range. Signed-off-by: Tony Luck <tony.luck@intel.com> --- Documentation/ABI/testing/sysfs-firmware-acpi | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+)