KVM: MMU: fix permission_fault()

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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>

...

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Xiao Guangrong 2016-03-25 21:19:35 +08:00 • committed by Paolo Bonzini

parent 4a6cd3ba6f

commit 7a98205dee

2 changed files with 5 additions and 6 deletions

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9

arch/x86/kvm/mmu.h

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2

arch/x86/kvm/paging_tmpl.h

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