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KVM: x86: Enable AVX for guest
authorSheng Yang <sheng@linux.intel.com>
Tue, 22 Jun 2010 05:49:21 +0000 (13:49 +0800)
committerAvi Kivity <avi@redhat.com>
Sun, 1 Aug 2010 07:47:10 +0000 (10:47 +0300)
commit6c3f6041172b78d5532c6bf3680d304e92ec2e66
tree3a1f358ea1cc29df958a6b3d535114987650e101tree | snapshot (tar.gz zip)
parent7ac77099ce88a0c31b75acd0ec5ef3da4415a6d8commit | diff
KVM: x86: Enable AVX for guest

Enable Intel(R) Advanced Vector Extension(AVX) for guest.

The detection of AVX feature includes OSXSAVE bit testing. When OSXSAVE bit is
not set, even if AVX is supported, the AVX instruction would result in UD as
well. So we're safe to expose AVX bits to guest directly.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
arch/x86/kvm/x86.c diff | blob | blame | history