lkml.org 
[lkml]   [2010]   [Mar]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 15/18] KVM: MMU: Propagate the right fault back to the guest after gva_to_gpa
    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@amd.com>
    > ---
    > 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.

    --
    Do not meddle in the internals of kernels, for they are subtle and quick to panic.



    \
     
     \ /
      Last update: 2010-03-15 08:39    [W:0.023 / U:0.300 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site