diff options
| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2015-05-13 14:42:28 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-19 20:52:43 +0200 |
| commit | d81135a57aa66e5bec55cdfe4dda79633f9082dd (patch) | |
| tree | ce0f3cf0b521e7c742e6915e160205f84987e5f0 /arch/x86/kvm/x86.c | |
| parent | efdfe536d8c643391e19d5726b072f82964bfbdb (diff) | |
| download | lwn-d81135a57aa66e5bec55cdfe4dda79633f9082dd.tar.gz lwn-d81135a57aa66e5bec55cdfe4dda79633f9082dd.zip | |
KVM: x86: do not reset mmu if CR0.CD and CR0.NW are changed
CR0.CD and CR0.NW are not used by shadow page table so that need
not adjust mmu if these two bit are changed
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index bbe184f07bf9..457b908244f2 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -572,8 +572,7 @@ out: int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0) { unsigned long old_cr0 = kvm_read_cr0(vcpu); - unsigned long update_bits = X86_CR0_PG | X86_CR0_WP | - X86_CR0_CD | X86_CR0_NW; + unsigned long update_bits = X86_CR0_PG | X86_CR0_WP; cr0 |= X86_CR0_ET; |