Description of problem: A race condition concerning virutalized interrupts (VLAPIC interrupts can be lost) has been fixed. Version-Release number of selected component (if applicable): 2.6.18-1.2739.el5xen How reproducible: AMD has a virtual iron test that shows a dhrystone test problem without the patch - and works with the patch. Fails eveytime without the patch. Patch has been pushed to xen unstable.
Created attachment 140246 [details] The patch fixes a race condition concerning virutalized interrupts (VLAPIC interrupts can be lost).
Looks good to me. Time to get it through the management procedures; once the idea has been approved we can push the patch to rhkernel-list to get it applied to the hypervisor.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux release. Product Management has requested further review of this request by Red Hat Engineering. This request is not yet committed for inclusion in release.
QE ack for RHEL5.
I've posted the patch to rhkernek-list and virtual-list and has received 3 ACKs.
During our testing we found that this important patch was not included in the kernel tree. Please include it so that the RC testing can be done without having to pull in missing patches. Markus is building a tree with the VLAPIC patch. Just wanted to mention it so there is no duplication of effort. http://brewweb.devel.redhat.com/brew/taskinfo?taskID=490612
in 2.6.18-1.2961.el5
2.6.18-7.el5 included in 20070125.0.