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| author | Paolo Bonzini <pbonzini@redhat.com> | 2013-09-09 13:52:33 +0200 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-09-17 12:52:31 +0300 |
| commit | ba6a3541545542721ce821d1e7e5ce35752e6fdf (patch) | |
| tree | b53ff602454f383dc8148d38d7d870972d7866db /arch/x86/kvm/vmx.c | |
| parent | 3261107ebfd8f6bba57cfcdb89385779fd149a00 (diff) | |
| download | op-kernel-dev-ba6a3541545542721ce821d1e7e5ce35752e6fdf.zip op-kernel-dev-ba6a3541545542721ce821d1e7e5ce35752e6fdf.tar.gz | |
KVM: mmu: allow page tables to be in read-only slots
Page tables in a read-only memory slot will currently cause a triple
fault because the page walker uses gfn_to_hva and it fails on such a slot.
OVMF uses such a page table; however, real hardware seems to be fine with
that as long as the accessed/dirty bits are set. Save whether the slot
is readonly, and later check it when updating the accessed and dirty bits.
Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
0 files changed, 0 insertions, 0 deletions
