From: Xiao Guangrong Date: Wed, 13 May 2015 06:42:28 +0000 (+0800) Subject: KVM: x86: do not reset mmu if CR0.CD and CR0.NW are changed X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d81135a57aa66e5bec55cdfe4dda79633f9082dd;p=linux-beck.git 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 Signed-off-by: Paolo Bonzini --- 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;