Bug 1747 - SIOV - Host kernel lockup during live migration of VM with DSA MDEV passthrough device using scalable vIOMMU
Summary: SIOV - Host kernel lockup during live migration of VM with DSA MDEV passthrou...
Status: RESOLVED FIXED
Alias: None
Product: ANCK 5.10 Dev
Classification: ANCK
Component: virt (show other bugs) virt
Version: 5.10.y-11
Hardware: All Linux
: P3-Medium S2-major
Target Milestone: ---
Assignee: maqiao
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-07-28 10:32 UTC by Fengqian
Modified: 2023-01-17 14:49 UTC (History)
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Description Fengqian intel_group 2022-07-28 10:32:19 UTC 
Description of problem:
While do VM live migration with DSA MDEV device using scalable vIOMMU, host kernel lockup and live migration failed.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Boot 2 VM with DSA MDEV device using scalable vIOMMU, one as migrate source machine and another as migrate dst machine.
2. In source VM, configure DSA device in dmaengine and start dmatest.
3. Start live migration

Actual results:
Host kernel lock up and live migration failed.

Expected results:


Additional info:
Comment 1 maqiao alibaba_cloud_group 2023-01-17 14:49:24 UTC 
merged: https://gitee.com/anolis/cloud-kernel/pulls/582