Messages in this thread | | | Date | Thu, 08 Oct 2009 18:25:30 +0200 | From | Avi Kivity <> | Subject | Re: [PATCH 1/9] KVM: SVM: Notify nested hypervisor of lost event injections |
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On 10/08/2009 06:22 PM, Joerg Roedel wrote: > On Thu, Oct 08, 2009 at 06:12:28PM +0200, Avi Kivity wrote: > >> On 10/08/2009 12:03 PM, Joerg Roedel wrote: >> >>> From: Alexander Graf<agraf@suse.de> >>> >>> If event_inj is valid on a #vmexit the host CPU would write >>> the contents to exit_int_info, so the hypervisor knows that >>> the event wasn't injected. >>> >>> We don't do this in nested SVM by now which is a bug and >>> fixed by this patch. >>> >> We need to start thinking about regression tests for these bugs. It >> would be relatively easy to set up something with save->cr3 == cr3 >> (i.e. no isolation, mmu virtualization, etc.). >> > Should be doable with a in-kernel regression test-suite module, I think. > Triggering such (race-condition like) test cases from userspace is > somewhat hard. > >
Isn't it sufficient, for this case, to inject a nested interrupt when the nested idt is not mapped?
-- error compiling committee.c: too many arguments to function
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