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Fri, 9 Jun 2023 11:40:29 +0000 (GMT) From: Kajol Jain To: mpe@ellerman.id.au Subject: [PATCH 06/10] docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document affinity_domain_via_virtual_processor sysfs interface file Date: Fri, 9 Jun 2023 17:09:57 +0530 Message-Id: <20230609114001.169235-7-kjain@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230609114001.169235-1-kjain@linux.ibm.com> References: <20230609114001.169235-1-kjain@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 1tI1U943bY_5b2Dy8eJfigGliI2jEvBp X-Proofpoint-GUID: 1tI1U943bY_5b2Dy8eJfigGliI2jEvBp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-09_08,2023-06-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 adultscore=0 spamscore=0 clxscore=1015 phishscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 priorityscore=1501 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306090097 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: disgoel@linux.ibm.com, kjain@linux.ibm.com, atrajeev@linux.vnet.ibm.com, maddy@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Add details of the new hv-gpci interface file called "affinity_domain_via_virtual_processor" in the ABI documentation. Signed-off-by: Kajol Jain --- .../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 +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