[libvirt] [QEMU PATCH] target-i386: Disable rdtscp on Opteron_G* CPU models

Paolo Bonzini pbonzini at redhat.com
Mon Nov 16 09:44:59 UTC 2015

On 13/11/2015 20:07, 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 <ehabkost at redhat.com>

Can we do it only on KVM and not on TCG?


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