From: Avi Kivity <avi@redhat.com>
Date: Sun, 24 Jan 2010 14:26:40 +0000 (+0200)
Subject: KVM: VMX: Pass cr0.mp through to the guest when the fpu is active
X-Git-Tag: v2.6.34-rc1~193^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=81231c698a71af6e1815df72c06685d295e1cc1d;p=pandora-kernel.git

KVM: VMX: Pass cr0.mp through to the guest when the fpu is active

When cr0.mp is clear, the guest doesn't expect a #NM in response to
a WAIT instruction.  Because we always keep cr0.mp set, it will get
a #NM, and potentially be confused.

Fix by keeping cr0.mp set only when the fpu is inactive, and passing
it through when inactive.

Reported-by: Lorenzo Martignoni <martignlo@gmail.com>
Analyzed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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