Bug 625903
| Summary: | [Xen] backport hardware task switching for HVM guests | ||||||||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | Paolo Bonzini <pbonzini> | ||||||
| Component: | kernel-xen | Assignee: | Paolo Bonzini <pbonzini> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | Jan Tluka <jtluka> | ||||||
| Severity: | high | Docs Contact: | |||||||
| Priority: | high | ||||||||
| Version: | 5.5 | CC: | cshao, drjones, minovotn, mrezanin, mshao, pbonzini, rwu, xen-maint, yuzhang | ||||||
| Target Milestone: | rc | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | All | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | 624598 | Environment: | |||||||
| Last Closed: | 2011-01-13 21:12:35 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: | |||||||||
| Bug Blocks: | 514489, 624598 | ||||||||
| Attachments: |
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Description
Paolo Bonzini
2010-08-20 18:28:53 UTC
Created attachment 441435 [details]
simple reproducer for 32-bit Linux guests
To reproduce under a RHEL5.5 Linux guest:
1) place the attached file into the guest's file system
2) install kernel-headers
3) Run the following commands:
sh double-fault.sh
cd double-fault
make
insmod double-fault.ko
rmmod double-fault
4) The guest should hang and not reset. xm dmesg should _not_ mention a triple fault.
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. Created attachment 441986 [details]
patch series to fix the bug
on top of the patches for 625902
in kernel-2.6.18-222.el5 You can download this test kernel from http://people.redhat.com/jwilson/el5 Detailed testing feedback is always welcomed. 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-2011-0017.html |