Bug 667359
| Summary: | forward port xen pvops changes for evtchn | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Paolo Bonzini <pbonzini> |
| Component: | kernel | Assignee: | Andrew Jones <drjones> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | 6.0 | CC: | drjones, mjenner, qcai, xen-maint, yuzhang |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | kernel-2.6.32-112.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-05-23 20:33:08 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 523117 | ||
| Bug Blocks: | |||
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Description
Paolo Bonzini
2011-01-05 12:37:04 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. Backporting these patches unfortunately don't fix the migration issues, in fact they got worse. On two systems where I could migrate one direction, but not the other before the backports, with them I wasn't able to migrate at all. I have found that using 2.6.37-2.fc15.x86_64 I'm able to migrate in both directions. So it looks like there are some other patches necessary that need to be found. This bug can be considered synching specifically drivers/xen/events.c
Already have:
aaca496 (xen: use percpu interrupts for IPIs and VIRQs, 2010-08-20)
dffe2e1 (xen: handle events as edge-triggered, 2010-08-20)
06b0362 (xen: Fix find_unbound_irq in presence of ioapic irqs., 2010-05-14)
Skipped:
77dff1c (x86: xen: Sanitise sparse_irq handling, 2010-09-29)
* would require general kernel backports outside of xen files
6903591 (xen: events: do not unmask event channels on resume, 2010-11-01)
* only first 2 hunks would be applicable, but those are for performance, so they're not worth the risk
cherry-picked the remaining cleanly:
3b32f57 (xen: statically initialize cpu_evtchn_mask_p, 2009-08-13)
9fa90aa (xen: use dynamic_irq_init_keep_chip_data, 2010-08-19)
a52521f (xen: set up IRQ before binding virq to evtchn, 2010-09-22)
b0097ad (xen: ensure that all event channels start off bound to VCPU 0, 2010-10-08)
e041956 (xen/events: use locked set|clear_bit() for cpu_evtchn_mask, 2010-11-16)
1c6969e (xen/evtchn: clear secondary CPUs' cpu_evtchn_mask[] after restore, 2010-11-16)
Also cherry-picked these, which weren't originally listed
b21ddbf5 (xen: dynamically allocate irq & event structures, 2010-06-07)
cb52e6d9 (xen: improvements to VIRQ_DEBUG output, 2010-10-15)
So far only compile tested.
Also added cherry-pick 3588fe2e (xen/events: change to using fasteoi, 2010-08-27) and synched-up with missing pieces of 38e20b07 (x86/xen: event channels delivery on HVM, 2010-05-14) Patch(es) available on kernel-2.6.32-112.el6 Patch(es) available on kernel-2.6.32-112.el6 An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2011-0542.html |