From: "Jim C. Brown" <jma5@umd.edu>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS
Date: Wed, 14 Sep 2005 09:39:21 -0400 [thread overview]
Message-ID: <20050914133921.GB6052@jbrown.mylinuxbox.org> (raw)
In-Reply-To: <4327A6BB.1040509@us.ibm.com>
On Tue, Sep 13, 2005 at 11:27:39PM -0500, Anthony Liguori wrote:
> I reckon kqemu has this same problem... Technically, even in ring 3, if
> you run natively, you violate the Popek/Goldberg requirements because of
> cpuid. It's just not possible to trap it but it shouldn't matter for
> most software.
>
It is possible to trap it, in a sense. You just read ahead and replace the
cpuid instruction with something else.
Ugly, but doable.
--
Infinite complexity begets infinite beauty.
Infinite precision begets infinite perfection.
next prev parent reply other threads:[~2005-09-14 13:39 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-13 12:36 [Qemu-devel] About qemu emulation speed (a question) and supported OS Alexandre Leclerc
2005-09-13 13:08 ` Adrian Smarzewski
2005-09-13 18:02 ` Alexandre Leclerc
2005-09-13 13:38 ` Jim C. Brown
2005-09-13 14:58 ` Anthony Liguori
2005-09-13 21:48 ` Jim C. Brown
2005-09-14 0:18 ` Mark Williamson
2005-09-14 2:48 ` Anthony Liguori
2005-09-14 3:48 ` Mark Williamson
2005-09-14 4:27 ` Anthony Liguori
2005-09-14 4:58 ` Mike Swanson
2005-09-14 13:39 ` Jim C. Brown [this message]
2005-09-14 18:46 ` Anthony Liguori
2005-09-14 22:42 ` Jim C. Brown
2005-09-14 13:37 ` Jim C. Brown
2005-09-14 15:47 ` Henrik Nordstrom
2005-09-14 17:53 ` Mark Williamson
2005-09-14 17:18 ` John R. Hogerhuis
2005-09-14 22:34 ` Jim C. Brown
2005-09-14 17:46 ` Mark Williamson
2005-09-15 21:26 ` Karl Magdsick
2005-09-15 23:24 ` Mark Williamson
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