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KVM: VMX: export PFEC.P bit on ept

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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>
This commit is contained in:
Xiao Guangrong 2012-06-20 15:58:04 +08:00 committed by Avi Kivity
parent 8e22f955fb
commit 4f5982a56a
1 changed files with 8 additions and 1 deletions
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9
arch/x86/kvm/vmx.c
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@ -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)