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Re: [Qemu-devel] [QEMU PATCH] target-i386: Disable rdtscp on Opteron_G*
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From: |
Eduardo Habkost |
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Subject: |
Re: [Qemu-devel] [QEMU PATCH] target-i386: Disable rdtscp on Opteron_G* CPU models |
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Date: |
Tue, 17 Nov 2015 12:42:01 -0200 |
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User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Fri, Nov 13, 2015 at 05:07:13PM -0200, Eduardo Habkost wrote:
> KVM can't virtualize rdtscp on AMD CPUs yet, so there's no point
> in enabling it by default on AMD CPU models, as all we are
> getting are confused users because of the "host doesn't support
> requested feature" warnings.
>
> Disable rdtscp on Opteron_G* models, but keep compatibility on
> pc-*-2.4 and older (just in case there are people are doing funny
> stuff using AMD CPU models on Intel hosts).
>
> Signed-off-by: Eduardo Habkost <address@hidden>
Applied to x86 tree.
--
Eduardo