KVM: VMX: export PFEC.P bit on ept

Export the present bit of page fault error code, the later patch
will use it

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index a2b9dd9..5c52a6d 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -4838,6 +4838,7 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu)
 {
        unsigned long exit_qualification;
        gpa_t gpa;
+       u32 error_code;
        int gla_validity;
 
        exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
@@ -4862,7 +4863,13 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu)
 
        gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
        trace_kvm_page_fault(gpa, exit_qualification);
-       return kvm_mmu_page_fault(vcpu, gpa, exit_qualification & 0x3, NULL, 0);
+
+       /* It is a write fault? */
+       error_code = exit_qualification & (1U << 1);
+       /* ept page table is present? */
+       error_code |= (exit_qualification >> 3) & 0x1;
+
+       return kvm_mmu_page_fault(vcpu, gpa, error_code, NULL, 0);
 }
 
 static u64 ept_rsvd_mask(u64 spte, int level)