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Bug 842406

Summary: suspend breaks kvm processor pinning
Product: [Fedora] Fedora Reporter: Robert Story <rs>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16CC: eblake, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-07-23 19:23:54 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
virt-manager pinning on running guest before suspend
none
virt manager guest pinning after suspend/resume
none
/var/log/messages for suspend/resume none

Description Robert Story 2012-07-23 19:10:42 UTC 
Description of problem:
After a fresh boot, my kvm guest with 4 cpus assigned is pinned to all 8 cpus on the host. After a suspend/resume, the same guest (all guests, in fact) will pin all virtual vpus to host cpu0.

Version-Release number of selected component (if applicable):
kernel-3.4.4-4.fc16.x86_64

How reproducible:
100%

Steps to Reproduce:
1. start multi-cpu guest on multi-cpu host
2. observer virtual cpus pinned to all host cpus
3. suspend/resume host
4. observe virtual cpus pinned to host cpu 0

Actual results:
virtual cpus pinned to cpu0

Expected results:
virtual cpus pinned to all (or configured) cpus

Additional info:
I found this fedora forum post of another user with the same issue: http://forums.fedoraforum.org/archive/index.php/t-278464.html
Comment 1 Robert Story 2012-07-23 19:11:16 UTC 
Created attachment 599844 [details]
virt-manager pinning on running guest before suspend
Comment 2 Robert Story 2012-07-23 19:11:58 UTC 
Created attachment 599845 [details]
virt manager guest pinning after suspend/resume
Comment 3 Robert Story 2012-07-23 19:12:44 UTC 
Created attachment 599846 [details]
/var/log/messages for suspend/resume
Comment 4 Eric Blake 2012-07-23 19:23:54 UTC 

*** This bug has been marked as a duplicate of bug 714271 ***