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| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2016-03-25 21:19:35 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-04-10 21:53:49 +0200 |
| commit | 7a98205deebfff9fc96f90d9e7b1a334b0bd3e2b (patch) | |
| tree | 8947affb0accc9dd791d980a3395a1dbb3e8fae5 /arch/x86/kvm/paging_tmpl.h | |
| parent | 4a6cd3ba6fc4993f1805613098d7b032a7aa937b (diff) | |
| download | linux-7a98205deebfff9fc96f90d9e7b1a334b0bd3e2b.tar.bz2 | |
KVM: MMU: fix permission_fault()
kvm-unit-tests complained about the PFEC is not set properly, e.g,:
test pte.rw pte.d pte.nx pde.p pde.rw pde.pse user fetch: FAIL: error code 15
expected 5
Dump mapping: address: 0x123400000000
------L4: 3e95007
------L3: 3e96007
------L2: 2000083
It's caused by the reason that PFEC returned to guest is copied from the
PFEC triggered by shadow page table
This patch fixes it and makes the logic of updating errcode more clean
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
[Do not assume pfec.p=1. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 1d971c7553c3..bc019f70e0b6 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -360,7 +360,7 @@ retry_walk: goto error; if (unlikely(is_rsvd_bits_set(mmu, pte, walker->level))) { - errcode |= PFERR_RSVD_MASK | PFERR_PRESENT_MASK; + errcode = PFERR_RSVD_MASK | PFERR_PRESENT_MASK; goto error; } |