From: Xiao Guangrong <[email protected]> If CR0.PG is changed, the page fault cann't be avoid when the prefault address is accessed later
And it also fix a bug: it can retry a page enabled #PF in page disabled context if mmu is shadow page This idear is from Gleb Natapov Signed-off-by: Xiao Guangrong <[email protected]> Signed-off-by: Avi Kivity <[email protected]> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fc29223..c071d73 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -525,6 +525,9 @@ int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0) kvm_x86_ops->set_cr0(vcpu, cr0); + if ((cr0 ^ old_cr0) & X86_CR0_PG) + kvm_clear_async_pf_completion_queue(vcpu); + if ((cr0 ^ old_cr0) & update_bits) kvm_mmu_reset_context(vcpu); return 0; -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
