On Mon, Mar 15, 2010 at 09:36:52AM +0200, Avi Kivity wrote: > On 03/03/2010 09:12 PM, Joerg Roedel wrote: >> This patch implements logic to make sure that either a >> page-fault/page-fault-vmexit or a nested-page-fault-vmexit >> is propagated back to the guest. >> >> Signed-off-by: Joerg Roedel<joerg.roedel@xxxxxxx> >> --- >> arch/x86/kvm/mmu.h | 1 + >> arch/x86/kvm/paging_tmpl.h | 2 ++ >> arch/x86/kvm/x86.c | 15 ++++++++++++++- >> 3 files changed, 17 insertions(+), 1 deletions(-) >> >> diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h >> index 64f619b..b42b27e 100644 >> --- a/arch/x86/kvm/mmu.h >> +++ b/arch/x86/kvm/mmu.h >> @@ -47,6 +47,7 @@ >> #define PFERR_USER_MASK (1U<< 2) >> #define PFERR_RSVD_MASK (1U<< 3) >> #define PFERR_FETCH_MASK (1U<< 4) >> +#define PFERR_NESTED_MASK (1U<< 31) >> > > > Why is this needed? Queue an ordinary page fault page; the injection > code should check the page fault intercept and #VMEXIT if needed. This is needed because we could have a nested page fault or an ordinary page fault which need to be propagated. Joerg -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
