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| author | Dexuan Cui <dexuan.cui@intel.com> | 2010-06-10 05:27:12 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-01 09:46:31 +0200 |
| commit | 2acf923e38fb6a4ce0c57115decbb38d334902ac (patch) | |
| tree | 51a0fba243c857a3bc373ab152c6374c804df224 /arch/x86/kvm/kvm_cache_regs.h | |
| parent | KVM: VMX: Fix incorrect rcu deref in rmode_tss_base() (diff) | |
| download | linux-2acf923e38fb6a4ce0c57115decbb38d334902ac.tar.xz linux-2acf923e38fb6a4ce0c57115decbb38d334902ac.zip | |
KVM: VMX: Enable XSAVE/XRSTOR for guest
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>
Diffstat (limited to 'arch/x86/kvm/kvm_cache_regs.h')
| -rw-r--r-- | arch/x86/kvm/kvm_cache_regs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kvm/kvm_cache_regs.h b/arch/x86/kvm/kvm_cache_regs.h index d2a98f8f9af5..6491ac8e755b 100644 --- a/arch/x86/kvm/kvm_cache_regs.h +++ b/arch/x86/kvm/kvm_cache_regs.h @@ -71,4 +71,10 @@ static inline ulong kvm_read_cr4(struct kvm_vcpu *vcpu) return kvm_read_cr4_bits(vcpu, ~0UL); } +static inline u64 kvm_read_edx_eax(struct kvm_vcpu *vcpu) +{ + return (kvm_register_read(vcpu, VCPU_REGS_RAX) & -1u) + | ((u64)(kvm_register_read(vcpu, VCPU_REGS_RDX) & -1u) << 32); +} + #endif |