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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-09-27 18:03:27 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-10-24 10:53:10 +0200 |
| commit | 20bd40dc6492da293993559555df07d467fd202e (patch) | |
| tree | 08396e178fa473a2d70a9797282d81315ce74b9c /arch/x86/kvm/paging_tmpl.h | |
| parent | 6292757fb0e758748fdb441861f8c50d397de9f0 (diff) | |
| download | blackbird-op-linux-20bd40dc6492da293993559555df07d467fd202e.tar.gz blackbird-op-linux-20bd40dc6492da293993559555df07d467fd202e.zip | |
KVM: MMU: cleanup for error mask set while walk guest page table
Small cleanup for set page fault error code
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 2bdd843ad63f..a83ff3794055 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -224,9 +224,7 @@ walk: is_cpuid_PSE36()) gfn += pse36_gfn_delta(pte); - access |= write_fault ? PFERR_WRITE_MASK : 0; - access |= fetch_fault ? PFERR_FETCH_MASK : 0; - access |= user_fault ? PFERR_USER_MASK : 0; + access |= write_fault | fetch_fault | user_fault; real_gpa = mmu->translate_gpa(vcpu, gfn_to_gpa(gfn), access); @@ -268,10 +266,9 @@ error: walker->error_code = 0; if (present) walker->error_code |= PFERR_PRESENT_MASK; - if (write_fault) - walker->error_code |= PFERR_WRITE_MASK; - if (user_fault) - walker->error_code |= PFERR_USER_MASK; + + walker->error_code |= write_fault | user_fault; + if (fetch_fault && mmu->nx) walker->error_code |= PFERR_FETCH_MASK; if (rsvd_fault) @@ -673,9 +670,9 @@ static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t vaddr, u32 access, int r; r = FNAME(walk_addr)(&walker, vcpu, vaddr, - !!(access & PFERR_WRITE_MASK), - !!(access & PFERR_USER_MASK), - !!(access & PFERR_FETCH_MASK)); + access & PFERR_WRITE_MASK, + access & PFERR_USER_MASK, + access & PFERR_FETCH_MASK); if (r) { gpa = gfn_to_gpa(walker.gfn); |
