From 097afee83201a76350c757488bda5ba131b6c35d Mon Sep 17 00:00:00 2001 From: Xiangyang Wu Date: Mon, 13 Dec 2021 12:59:13 +0800 Subject: [PATCH] doc: add note about SRIOV disable Currently, Service VM may fail to shut down due to some enabled VFs. ACRN doesn't disable VFs automatically. In this patch, add a note for user to disable VFs before Service VM shuts down. Tracked-On: #5921 Signed-off-by: Xiangyang Wu --- doc/tutorials/enable_s5.rst | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/doc/tutorials/enable_s5.rst b/doc/tutorials/enable_s5.rst index 5ef0a83d3..1d9418d41 100644 --- a/doc/tutorials/enable_s5.rst +++ b/doc/tutorials/enable_s5.rst @@ -338,3 +338,8 @@ ack message, and proceeds to shut itself down accordingly. #. After receiving the ack message from all user VMs, the Lifecycle Manager in the Service VM shuts down VM. #. The hypervisor shuts down the system after all VMs have shut down. + +.. note:: If one or more virtual functions (VFs) of a SR-IOV device, e.g. GPU on Alder + Lake platform, are assigned to User VMs, extra steps should be taken by user to + disable all VFs before Service VM shuts down. Otherwise, Service VM may fail to + shut down due to some enabled VFs. \ No newline at end of file