From: Jan Kiszka <jan.kiszka@siemens.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: "Jes.Sorensen@redhat.com" <Jes.Sorensen@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"avi@redhat.com" <avi@redhat.com>
Subject: Re: [PATCH 1/1] Disable GUEST_INTR_STATE_STI flag before injecting NMI to guest on VMX
Date: Fri, 27 Aug 2010 13:09:09 +0200 [thread overview]
Message-ID: <4C779CD5.5000307@siemens.com> (raw)
In-Reply-To: <20100827110459.GA21909@redhat.com>
Gleb Natapov wrote:
> On Fri, Aug 27, 2010 at 10:27:37AM +0200, Jan Kiszka wrote:
>> Am 26.08.2010 22:06, Jes.Sorensen@redhat.com wrote:
>>> From: Jes Sorensen <Jes.Sorensen@redhat.com>
>>>
>>> Injecting an NMI while GUEST_INTR_STATE_STI is set may fail,
>>> which can cause an EXIT with invalid state, resulting in the
>>> guest dieing.
>> Very interesting. Reality obviously doesn't bother about the statement
>> of the vendor [1].
>>
> I re-read my mail thread with vendor and to be fair vendor said that we should
> clear blocked by STI before injecting NMI. It's my fault I missed it.
Ah, ok, then I take this back.
Still, this leaves blocked-by-STI useless when NMIs are present. We are
somehow in the same troubles as on AMD.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2010-08-27 11:09 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-26 20:06 [PATCH 0/1] Disable GUEST_INTR_STATE_STI flag before injecting NMI to VMX guest Jes.Sorensen
2010-08-26 20:06 ` [PATCH 1/1] Disable GUEST_INTR_STATE_STI flag before injecting NMI to guest on VMX Jes.Sorensen
2010-08-27 8:27 ` Jan Kiszka
2010-08-27 8:31 ` Jes Sorensen
2010-08-27 8:39 ` Jan Kiszka
2010-08-27 9:46 ` Avi Kivity
2010-08-27 11:06 ` Jan Kiszka
2010-08-27 13:58 ` Avi Kivity
2010-08-27 14:13 ` Jan Kiszka
2010-08-27 15:50 ` Avi Kivity
2010-08-27 16:43 ` Jan Kiszka
2010-08-29 8:09 ` Avi Kivity
2010-08-27 9:44 ` Avi Kivity
2010-08-27 11:06 ` Jan Kiszka
2010-08-27 13:54 ` Avi Kivity
2010-08-27 14:12 ` Jan Kiszka
2010-08-27 11:16 ` Gleb Natapov
2010-08-27 11:23 ` Jan Kiszka
2010-08-27 11:25 ` Gleb Natapov
2010-08-27 11:04 ` Gleb Natapov
2010-08-27 11:09 ` Jan Kiszka [this message]
2010-08-27 9:21 ` Avi Kivity
2010-08-27 9:41 ` Jes Sorensen
2010-08-27 9:47 ` Avi Kivity
2010-08-27 9:56 ` Jes Sorensen
2010-08-27 9:59 ` Avi Kivity
2010-08-27 10:01 ` Jes Sorensen
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