From: Avi Kivity <avi@qumranet.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: kvm-devel@lists.sourceforge.net,
Carsten Emde <Carsten.Emde@osadl.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [kvm-devel] 2.6.23.1-rt4 and kvm 48
Date: Tue, 30 Oct 2007 13:37:51 +0200 [thread overview]
Message-ID: <4727178F.8040005@qumranet.com> (raw)
In-Reply-To: <472716C1.1090102@siemens.com>
Jan Kiszka wrote:
> Avi Kivity wrote:
>
>> Jan Kiszka wrote:
>>
>>> Interesting result - you've read about the wbinvd issues? Is there no
>>> wbinvd in the bios shipped with older kvm? Which VM extension did you
>>> test, both Intel and AMD? I would bet that your X issues are due to the
>>> same effect. X startup/shutdown involves a lot of wbinvd calls on my
>>> test boxes.
>>>
>>>
>>>
>> kvm.git now traps invd and wbinvd on amd, so there shouldn't be any
>> issues there.
>>
>
> So kvm can then simply ignore the instructions, or what does it do about
> them? I recall some replies in the related thread that some more work
> may be required.
>
>
It currently ignores the instructions. When device passthrough is
implemented more work will be needed.
--
Any sufficiently difficult bug is indistinguishable from a feature.
next prev parent reply other threads:[~2007-10-30 11:37 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-29 14:09 2.6.23.1-rt4 and kvm 48 David Brown
[not found] ` <9c21eeae0710290709x527cf4fcq52bb410907ff496-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-30 4:18 ` Avi Kivity
[not found] ` <4726B088.1010709-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-30 7:38 ` Carsten Emde
[not found] ` <4726DF66.4000000-Q945KHDl0DbYtjvyW6yDsg@public.gmane.org>
2007-10-30 9:49 ` Jan Kiszka
[not found] ` <4726FE2A.1040607-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-30 10:02 ` Alexander Graf
2007-10-30 11:07 ` Avi Kivity
[not found] ` <47271057.5040102-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-30 11:34 ` Jan Kiszka
2007-10-30 11:37 ` Avi Kivity [this message]
2007-11-01 9:28 ` Dor Laor
[not found] ` <47299C43.1070703-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-05 20:27 ` Carsten Emde
[not found] ` <472F7CA7.8060707-Q945KHDl0DbYtjvyW6yDsg@public.gmane.org>
2007-11-06 5:22 ` David Brown
[not found] ` <9c21eeae0711052122y483b06d8ycbcfbfb95fb36663-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-11-06 8:12 ` Dor Laor
[not found] ` <47302208.2090301-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-06 9:53 ` Carsten Emde
[not found] ` <473039B2.1010106-Q945KHDl0DbYtjvyW6yDsg@public.gmane.org>
2007-11-06 14:53 ` David Brown
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