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author | Avi Kivity | 2010-12-05 17:56:11 +0100 |
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committer | Avi Kivity | 2011-01-12 10:31:16 +0100 |
commit | aff48baa34c033318ad322ecbf2e4bcd891b29ca (patch) | |
tree | 84955c55c812dd540cd0c54e5bdf6d3f5bfd08be /arch/x86/kvm/svm.c | |
parent | KVM: Replace reads of vcpu->arch.cr3 by an accessor (diff) | |
download | kernel-qcow2-linux-aff48baa34c033318ad322ecbf2e4bcd891b29ca.tar.gz kernel-qcow2-linux-aff48baa34c033318ad322ecbf2e4bcd891b29ca.tar.xz kernel-qcow2-linux-aff48baa34c033318ad322ecbf2e4bcd891b29ca.zip |
KVM: Fetch guest cr3 from hardware on demand
Instead of syncing the guest cr3 every exit, which is expensince on vmx
with ept enabled, sync it only on demand.
[sheng: fix incorrect cr3 seen by Windows XP]
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
-rw-r--r-- | arch/x86/kvm/svm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index a7b04c0bd7a5..25bd1bc5aad2 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1327,6 +1327,10 @@ static void svm_decache_cr0_guest_bits(struct kvm_vcpu *vcpu) { } +static void svm_decache_cr3(struct kvm_vcpu *vcpu) +{ +} + static void svm_decache_cr4_guest_bits(struct kvm_vcpu *vcpu) { } @@ -3871,6 +3875,7 @@ static struct kvm_x86_ops svm_x86_ops = { .get_cpl = svm_get_cpl, .get_cs_db_l_bits = kvm_get_cs_db_l_bits, .decache_cr0_guest_bits = svm_decache_cr0_guest_bits, + .decache_cr3 = svm_decache_cr3, .decache_cr4_guest_bits = svm_decache_cr4_guest_bits, .set_cr0 = svm_set_cr0, .set_cr3 = svm_set_cr3, |