From: Joerg Roedel <joerg.roedel@amd.com>
To: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
Alexander Graf <agraf@suse.de>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/9] KVM: SVM: Notify nested hypervisor of lost event injections
Date: Thu, 8 Oct 2009 18:22:22 +0200 [thread overview]
Message-ID: <20091008162222.GG14073@amd.com> (raw)
In-Reply-To: <4ACE0F6C.3060103@redhat.com>
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.
Joerg
next prev parent reply other threads:[~2009-10-08 16:23 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-08 10:03 [PATCH 0/9 v2] KVM: Nested SVM fixes and tracepoint conversion Joerg Roedel
2009-10-08 10:03 ` [PATCH 1/9] KVM: SVM: Notify nested hypervisor of lost event injections Joerg Roedel
2009-10-08 16:12 ` Avi Kivity
2009-10-08 16:22 ` Joerg Roedel [this message]
2009-10-08 16:25 ` Avi Kivity
2009-10-08 16:32 ` Joerg Roedel
2009-10-08 16:38 ` Avi Kivity
2009-10-08 16:46 ` Alexander Graf
2009-10-12 9:34 ` Avi Kivity
2009-10-08 10:03 ` [PATCH 2/9] KVM: SVM: Move INTR vmexit out of atomic code Joerg Roedel
2009-10-08 10:03 ` [PATCH 3/9] KVM: SVM: Add tracepoint for nested vmrun Joerg Roedel
2009-10-08 15:58 ` Avi Kivity
2009-10-08 16:15 ` Joerg Roedel
2009-10-08 16:20 ` Avi Kivity
2009-10-08 10:03 ` [PATCH 4/9] KVM: SVM: Add tracepoint for nested #vmexit Joerg Roedel
2009-10-08 10:03 ` [PATCH 5/9] KVM: SVM: Add tracepoint for injected #vmexit Joerg Roedel
2009-10-08 10:03 ` [PATCH 6/9] KVM: SVM: Add tracepoint for #vmexit because intr pending Joerg Roedel
2009-10-08 10:03 ` [PATCH 7/9] KVM: SVM: Add tracepoint for invlpga instruction Joerg Roedel
2009-10-08 16:01 ` Avi Kivity
2009-10-08 16:18 ` Joerg Roedel
2009-10-08 16:21 ` Avi Kivity
2009-10-08 16:23 ` Joerg Roedel
2009-10-08 10:03 ` [PATCH 8/9] KVM: SVM: Add tracepoint for skinit instruction Joerg Roedel
2009-10-08 10:03 ` [PATCH 9/9] KVM: SVM: Remove nsvm_printk debugging code Joerg Roedel
-- strict thread matches above, loose matches on Subject: below --
2009-10-09 14:08 [PATCH 0/9 v3] KVM: Nested SVM fixes and tracepoint conversion Joerg Roedel
2009-10-09 14:08 ` [PATCH 1/9] KVM: SVM: Notify nested hypervisor of lost event injections Joerg Roedel
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