Add details of the new hv-gpci interface file called
"affinity_domain_via_virtual_processor" in the ABI documentation.
Signed-off-by: Kajol Jain <kj...@linux.ibm.com>
---
.../sysfs-bus-event_source-devices-hv_gpci | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
index 003d94afbbcd..d8862808c955 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
@@ -124,3 +124,18 @@ Description: admin read only
created and give error when reading it.
* The end user reading this sysfs file need to decode sysfs
file data as per
underneath platform/firmware.
+
+What:
/sys/devices/hv_gpci/interface/affinity_domain_via_virtual_processor
+Date: June 2023
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: admin read only
+ This sysfs file exposes the system topology information by
making HCALL
+ H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request
value
+ AFFINITY_DOMAIN_INFORMATION_BY_VIRTUAL_PROCESSOR(0xA0).
+ * This sysfs file is only be created for power10 and above
platforms.
+ * User need root access to read data from this sysfs file.
+ * Incase the HCALL fails with hardware/permission issue, or the
support for
+ AFFINITY_DOMAIN_INFORMATION_BY_VIRTUAL_PROCESSOR counter
request value
+ removed, this sysfs file still be created and give error when
reading it.
+ * The end user reading this sysfs file need to decode sysfs
file data as per
+ underneath platform/firmware.
--
2.35.3
