From: Paolo Bonzini <pbonzini@redhat.com>
To: "Radim Krčmář" <rkrcmar@redhat.com>, "Andrey Korolyov" <andrey@xdel.ru>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Bandan Das <bsd@redhat.com>, Kevin O'Connor <kevin@koconnor.net>,
Gerd Hoffmann <kraxel@redhat.com>
Subject: Re: [Qemu-devel] E5-2620v2 - emulation stop error
Date: Wed, 01 Apr 2015 14:05:46 +0200 [thread overview]
Message-ID: <551BDF1A.4030109@redhat.com> (raw)
In-Reply-To: <20150401114923.GH13271@potion.brq.redhat.com>
On 01/04/2015 13:49, Radim Krčmář wrote:
> 2015-03-31 21:23+0300, Andrey Korolyov:
>> On Tue, Mar 31, 2015 at 9:04 PM, Bandan Das <bsd@redhat.com> wrote:
>>> Bandan Das <bsd@redhat.com> writes:
>>>> Andrey Korolyov <andrey@xdel.ru> writes:
>>>> ...
>>>>> http://xdel.ru/downloads/kvm-e5v2-issue/another-tracepoint-fail-with-apicv.dat.gz
>>>>>
>>>>> Something a bit more interesting, but the mess is happening just
>>>>> *after* NMI firing.
>>>>
>>>> What happens if NMI is turned off on the host ?
>>>
>>> Sorry, I meant the watchdog..
>>
>> Thanks, everything goes well (as it probably should go there):
>> http://xdel.ru/downloads/kvm-e5v2-issue/apicv-enabled-nmi-disabled.dat.gz
>
> Nice revelation!
Yes, pretty random but good to know. Can you try again with the
nmi/nmi_handler tracepoint also?
Paolo
> KVM doesn't expect host's NMIs to look like this so it doesn't pass them
> to the host. What was the watchdog that casually sent NMIs?
> (It worked after "nmi_watchdog=0" on the host?)
>
> (Guest's NMI should have a different result as well. NMI_EXCEPTION is
> an expected exit reason for guest's hard exceptions, they are then
> differentiated by intr_info and nothing hinted that this was a NMI.)
>
next prev parent reply other threads:[~2015-04-01 12:05 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-05 22:14 [Qemu-devel] E5-2620v2 - emulation stop error Andrey Korolyov
2015-03-05 23:44 ` Andrey Korolyov
2015-03-06 16:57 ` Bandan Das
2015-03-07 0:00 ` Andrey Korolyov
2015-03-10 14:24 ` Andrey Korolyov
2015-03-10 16:57 ` Dr. David Alan Gilbert
2015-03-10 18:08 ` Andrey Korolyov
2015-03-10 18:16 ` Dr. David Alan Gilbert
2015-03-10 18:21 ` Andrey Korolyov
2015-03-10 19:30 ` Paolo Bonzini
2015-03-10 18:10 ` Paolo Bonzini
2015-03-10 18:21 ` Bandan Das
2015-03-10 19:25 ` Paolo Bonzini
2015-03-10 19:37 ` Dr. David Alan Gilbert
2015-03-10 20:29 ` Dr. David Alan Gilbert
2015-03-11 2:38 ` Bandan Das
2015-03-11 13:45 ` Dr. David Alan Gilbert
2015-03-11 15:42 ` Kevin O'Connor
2015-03-11 15:53 ` Dr. David Alan Gilbert
2015-03-11 16:37 ` Kevin O'Connor
2015-03-11 16:52 ` Dr. David Alan Gilbert
2015-03-11 17:37 ` Kevin O'Connor
2015-03-11 17:41 ` Paolo Bonzini
2015-03-11 17:59 ` Dr. David Alan Gilbert
2015-03-11 18:24 ` Bandan Das
2015-03-11 18:40 ` Kevin O'Connor
2015-03-11 18:45 ` Kevin O'Connor
2015-03-11 19:19 ` Kevin O'Connor
2015-03-11 19:33 ` Dr. David Alan Gilbert
2015-03-11 19:47 ` Bandan Das
2015-03-11 19:47 ` Andrey Korolyov
2015-03-11 19:59 ` Dr. David Alan Gilbert
2015-03-11 20:09 ` Andrey Korolyov
2015-03-12 9:59 ` Dr. David Alan Gilbert
2015-03-12 10:47 ` Andrey Korolyov
2015-03-16 19:17 ` Andrey Korolyov
2015-03-16 19:26 ` Dr. David Alan Gilbert
2015-03-25 20:43 ` Andrey Korolyov
2015-03-25 20:46 ` Andrey Korolyov
2015-03-25 20:54 ` Kevin O'Connor
2015-03-25 22:31 ` Andrey Korolyov
2015-03-25 23:02 ` Kevin O'Connor
2015-03-25 23:35 ` Andrey Korolyov
2015-03-26 0:05 ` Kevin O'Connor
2015-03-26 15:58 ` Radim Krčmář
2015-03-26 16:36 ` Kevin O'Connor
2015-03-26 16:48 ` Andrey Korolyov
2015-03-26 17:06 ` Kevin O'Connor
2015-03-26 17:08 ` Andrey Korolyov
2015-03-26 17:18 ` Kevin O'Connor
2015-03-26 17:33 ` Andrey Korolyov
2015-03-26 17:40 ` Radim Krčmář
2015-03-26 18:24 ` Andrey Korolyov
2015-03-26 20:40 ` Radim Krčmář
2015-03-26 21:03 ` Bandan Das
2015-03-27 10:16 ` Andrey Korolyov
2015-03-30 18:56 ` Radim Krčmář
2015-03-30 19:32 ` Andrey Korolyov
2015-03-31 13:45 ` Radim Krčmář
2015-03-31 14:56 ` Andrey Korolyov
2015-03-31 16:45 ` Radim Krčmář
2015-03-31 17:40 ` Andrey Korolyov
2015-03-31 18:01 ` Bandan Das
2015-03-31 18:04 ` Bandan Das
2015-03-31 18:23 ` Andrey Korolyov
2015-04-01 11:49 ` Radim Krčmář
2015-04-01 12:05 ` Paolo Bonzini [this message]
2015-04-01 12:26 ` Andrey Korolyov
2015-04-01 13:19 ` Paolo Bonzini
2015-04-01 15:37 ` Andrey Korolyov
2015-04-01 16:29 ` Andrey Korolyov
2015-04-01 22:58 ` Andrey Korolyov
2015-04-05 14:12 ` Andrey Korolyov
2015-03-27 11:54 ` Andrey Korolyov
2015-03-30 19:28 ` Radim Krčmář
2015-03-26 17:35 ` Radim Krčmář
2015-03-26 17:34 ` Radim Krčmář
2015-03-26 2:47 ` Bandan Das
2015-03-26 9:18 ` Andrey Korolyov
2015-03-26 15:05 ` Andrey Korolyov
2015-03-11 17:09 ` Bandan Das
2015-03-11 17:32 ` Kevin O'Connor
2015-03-11 18:01 ` Bandan Das
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