From: Avi Kivity <avi@redhat.com>
To: Joerg Roedel <joerg.roedel@amd.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, 08 Oct 2009 18:38:48 +0200 [thread overview]
Message-ID: <4ACE1598.6050200@redhat.com> (raw)
In-Reply-To: <20091008163234.GJ14073@amd.com>
On 10/08/2009 06:32 PM, Joerg Roedel wrote:
> No. The L1 guest needs to execute VMRUN with an interrupt to inject to
> the L2 guest with event_inj. On that VMRUN instruction emulation an
> interrupt becomes pending which causes an immediate #vmexit from L2 to
> L2 again without even entering the L2 guest. The bug was that in this
> case the event which the L1 tried to inject in the L2 was lost because
> it was not copied to exit_int_info.
>
(from L1 to L0?)
Wow. Alex, how did you find this?
We can try to cause an interrupt using a signal from another thread, but
that's too difficult as the first test in a test suite.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-10-08 16:39 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
2009-10-08 16:25 ` Avi Kivity
2009-10-08 16:32 ` Joerg Roedel
2009-10-08 16:38 ` Avi Kivity [this message]
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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