 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] [PATCH] retry instruction on svm emulation failure
I don't think we can take this patch before understanding what is going
on. As Keir said, could you share a sample code or failure case? so we
can debug it.
Thanks, -Wei On 05/18/2011 05:08 AM, Keir Fraser wrote: On 18/05/2011 10:05, "Paolo Bonzini"<pbonzini@xxxxxxxxxx> wrote:retry instruction on svm emulation failure Upon emulation failure, Xen injects a #GP into the guest on AMD machines. However, this kind of #GP does not happen in hardware. It is possible (and was observed in practice) that the failure is transient. It will go away naturally if the instruction is retried, because the guest will be executing other code and will not exit.It begs the question why we were emulating the instruction in the first place. I'd like to see further explanation, with a concrete example, before applying this patch. Or get an Ack from an AMD maintainer. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] [PATCH] x86: clear CPUID output of leaf 0xd for Dom0 when xsave is disabled, Wei Huang |
|---|---|
| Next by Date: | Re: [Xen-devel] [PATCH 3 of 3] kexec: disable iommu jumping into the kdump kernel, Andrew Cooper |
| Previous by Thread: | Re: [Xen-devel] [PATCH] retry instruction on svm emulation failure, Keir Fraser |
| Next by Thread: | [Xen-devel] [PATCH] xenalyze: fix compile errors with gcc 4.6, Olaf Hering |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
