From: "Radim Krčmář" <rkrcmar@redhat.com>
To: 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>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] E5-2620v2 - emulation stop error
Date: Wed, 1 Apr 2015 13:49:23 +0200 [thread overview]
Message-ID: <20150401114923.GH13271@potion.brq.redhat.com> (raw)
In-Reply-To: <CABYiri8N48vc71sdnwyTeChUPgG=iHnU4MnV_4-9DPkPxP_Xbg@mail.gmail.com>
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!
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 11:49 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 [this message]
2015-04-01 12:05 ` Paolo Bonzini
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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