From: Avi Kivity <avi@redhat.com>
To: Timur Safin <timur.safin@gmail.com>
Cc: Erik Rull <erik.rull@rdsoftware.de>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: CPU change causes hanging of .NET apps
Date: Tue, 03 Nov 2009 17:56:37 +0200 [thread overview]
Message-ID: <4AF052B5.6090506@redhat.com> (raw)
In-Reply-To: <68e9e5f50911030711i98e15d9t975bc252b9fdf634@mail.gmail.com>
On 11/03/2009 05:11 PM, Timur Safin wrote:
>
> My totally noob in QEMU guess -
> my bet it's CR4.OSFXSR which is controlled by presence of
> cpuid.1.edx[24] - FXSR bit (FXSAVE and FXRSTOR) instructions.
>
That would affect floating point as well.
> I'm curious - is there any way in QEMU to redefine returned cpuid leaf
> values? It will be interesting to see results if that given bit will
> be disabled in configuration.
>
qemu -cpu host,-flag
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-11-03 15:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-28 21:13 CPU change causes hanging of .NET apps Erik Rull
2009-10-28 21:35 ` Javier Guerra
2009-10-29 0:27 ` Brian Jackson
2009-11-01 15:42 ` Avi Kivity
2009-11-01 23:45 ` Erik Rull
2009-11-02 6:10 ` Avi Kivity
2009-11-03 14:56 ` Erik Rull
2009-11-03 14:58 ` Avi Kivity
2009-11-03 15:11 ` Timur Safin
2009-11-03 15:56 ` Avi Kivity [this message]
2009-11-05 19:03 ` Erik Rull
2009-11-08 8:50 ` Avi Kivity
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