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    SubjectRe: [PATCH 1/9] KVM: SVM: Notify nested hypervisor of lost event injections
    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<>
    > >
    > >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.


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