From: bugzilla-daemon@bugzilla.kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 206579] KVM with passthrough generates "BUG: kernel NULL pointer dereference" and crashes
Date: Fri, 28 Feb 2020 21:49:34 +0000 [thread overview]
Message-ID: <bug-206579-28872-GC4l09c8Vn@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-206579-28872@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=206579
--- Comment #38 from muncrief (rmuncrief@humanavance.com) ---
(In reply to Anthony from comment #37)
> ... I just wanted to check if I am missing anything on my side as I am not 100% sure on how to tell avic is working looking a trace, perf stat/live. ...
You can tell if avic is working by executing "perf kvm stat live" and then
looking for "avic_incomplete_ipi" and "avic_unaccelerated_" in the VM-EXIT
column. If it's not working you'll see "vintr" instead.
By the way the way "avic_unaccelerated_" is actually
"avic_unaccelerated_access" in the code but evidently it gets truncated in the
perf command output.
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next prev parent reply other threads:[~2020-02-28 21:49 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-17 18:17 [Bug 206579] New: KVM with passthrough generates "BUG: kernel NULL pointer dereference" and crashes bugzilla-daemon
2020-02-18 6:45 ` [Bug 206579] " bugzilla-daemon
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2020-02-28 21:49 ` bugzilla-daemon [this message]
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