kvm: dompmwakeup fails if domain becomes pmsuspended

[Chris J Arges]

[Impact]

When using qemu/kvm/libvirt, if one suspends the VM using actual power suspending code, the guest cannot resume using 'virsh dompmwakeup'.

[Test Case]

1) Create a KVM VM and install Trusty using libvirt (although qemu alone will also exhibit this problem)
2) Inside the vm run (as root): 'echo mem > /sys/power/state'
3) From the hypervisor run 'virsh dompmwakeup <domain name>'
4) The domain should resume

[Regression Potential]

Commit 40d020f56226aee7c75a6c29f471c4b866765732 from seabios backported into trusty fixes the issue.

[Chris J Arges (arges)]

This is a qemu issue, not a kernel issue. This works with qemu 2.1, and not 2.0. Doing a bisect now.

[Serge Hallyn (serge-hallyn)]

Thanks, we can combine this SRU with bug 1324174.

[Chris J Arges (arges)]

This fix has been uploaded into the trusty queue.

[Colin Watson (cjwatson)]

Hello Chris, or anyone else affected,

Accepted seabios into trusty-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/seabios/1.7.4-4ubuntu0.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Ubuntu Foundations Team Bug Bot (crichton)]

The fix for this bug has been awaiting testing feedback in the -proposed repository for trusty for more than 90 days. Please test this fix and update the bug appropriately with the results. In the event that the fix for this bug is still not verified 15 days from now, the package will be removed from the -proposed repository.

[Steve Langasek (vorlon)]

The version of seabios in the proposed pocket of Trusty that was purported to fix this bug report has been removed because the bugs that were to be fixed by the upload were not verified in a timely (105 days) fashion.