]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
KVM: MMU: fix permission_fault()
authorXiao Guangrong <guangrong.xiao@linux.intel.com>
Fri, 25 Mar 2016 13:19:35 +0000 (21:19 +0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Sun, 10 Apr 2016 19:53:49 +0000 (21:53 +0200)
commit7a98205deebfff9fc96f90d9e7b1a334b0bd3e2b
tree8947affb0accc9dd791d980a3395a1dbb3e8fae5
parent4a6cd3ba6fc4993f1805613098d7b032a7aa937b
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>
arch/x86/kvm/mmu.h
arch/x86/kvm/paging_tmpl.h