From: Avi Kivity <avi@redhat.com>
To: qemu-devel@nongnu.org
Cc: Glauber Costa <glommer@gmail.com>
Subject: Re: [Qemu-devel] [PATCH] don't expose lm bit if kernel is not 64-bit capable.
Date: Wed, 04 Feb 2009 10:10:02 +0200 [thread overview]
Message-ID: <49894D5A.7000209@redhat.com> (raw)
In-Reply-To: <4988B39B.5050509@us.ibm.com>
Anthony Liguori wrote:
>
> All I said was that if we used KVM_GET_SUPPORTED_CPUID, we had to do
> something about save/restore since it can mask arbitrary things.
>
Right, we need to transfer the cpuid bits to the migration target.
btw, we need to read them out of the kernel, since the cpuid instruction
accesses hidden processor state (the results of cpuid don't depend
simply on input eax and ecx).
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2009-02-04 8:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-03 15:04 [Qemu-devel] [PATCH] don't expose lm bit if kernel is not 64-bit capable Glauber Costa
2009-02-03 15:44 ` Alexander Graf
2009-02-03 15:52 ` Glauber Costa
2009-02-03 17:58 ` Anthony Liguori
2009-02-03 19:35 ` Avi Kivity
2009-02-03 19:37 ` Avi Kivity
2009-02-03 20:00 ` Glauber Costa
2009-02-03 21:14 ` Anthony Liguori
2009-02-03 21:35 ` Glauber Costa
2009-02-03 21:42 ` Anthony Liguori
2009-02-04 8:10 ` Avi Kivity [this message]
2009-02-03 19:37 ` Avi Kivity
-- strict thread matches above, loose matches on Subject: below --
2009-02-03 20:15 Glauber Costa
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