From 27959a4415a5a00881a7b9353ab9b1274da2ca47 Mon Sep 17 00:00:00 2001 From: Junaid Shahid Date: Tue, 6 Dec 2016 16:46:10 -0800 Subject: kvm: x86: mmu: Use symbolic constants for EPT Violation Exit Qualifications This change adds some symbolic constants for VM Exit Qualifications related to EPT Violations and updates handle_ept_violation() to use these constants instead of hard-coded numbers. Signed-off-by: Junaid Shahid Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) (limited to 'arch/x86/kvm/vmx.c') diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index a236decb81e4..81159a3878f4 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6374,14 +6374,20 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu) gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); trace_kvm_page_fault(gpa, exit_qualification); - /* it is a read fault? */ - error_code = (exit_qualification << 2) & PFERR_USER_MASK; - /* it is a write fault? */ - error_code |= exit_qualification & PFERR_WRITE_MASK; - /* It is a fetch fault? */ - error_code |= (exit_qualification << 2) & PFERR_FETCH_MASK; - /* ept page table is present? */ - error_code |= (exit_qualification & 0x38) != 0; + /* Is it a read fault? */ + error_code = (exit_qualification & EPT_VIOLATION_READ) + ? PFERR_USER_MASK : 0; + /* Is it a write fault? */ + error_code |= (exit_qualification & EPT_VIOLATION_WRITE) + ? PFERR_WRITE_MASK : 0; + /* Is it a fetch fault? */ + error_code |= (exit_qualification & EPT_VIOLATION_INSTR) + ? PFERR_FETCH_MASK : 0; + /* ept page table entry is present? */ + error_code |= (exit_qualification & + (EPT_VIOLATION_READABLE | EPT_VIOLATION_WRITABLE | + EPT_VIOLATION_EXECUTABLE)) + ? PFERR_PRESENT_MASK : 0; vcpu->arch.exit_qualification = exit_qualification; -- cgit v1.2.1