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KVM: VMX: Enable XSAVE/XRSTOR for guest

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This patch enable guest to use XSAVE/XRSTOR instructions.

We assume that host_xcr0 would use all possible bits that OS supported.

And we loaded xcr0 in the same way we handled fpu - do it as late as we can.

Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Dexuan Cui
2010-06-10 11:27:12 +08:00
committed by Avi Kivity
parent f495c6e5e8
commit 2acf923e38
6 changed files with 146 additions and 8 deletions
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include/linux/kvm_host.h
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@@ -88,7 +88,7 @@ struct kvm_vcpu {
int srcu_idx;
int fpu_active;
int guest_fpu_loaded;
int guest_fpu_loaded, guest_xcr0_loaded;
wait_queue_head_t wq;
int sigset_active;
sigset_t sigset;