lkml.org 
[lkml]   [2010]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[PATCH 3/5] KVM MMU: fix for got gfn when sync shadow pages
    sp->gfns[] are not mapping gfn since it has cooked by unalias_gfn()

    Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
    ---
    arch/x86/kvm/paging_tmpl.h | 7 ++++---
    1 files changed, 4 insertions(+), 3 deletions(-)

    diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
    index 11d8a16..71c73fe 100644
    --- a/arch/x86/kvm/paging_tmpl.h
    +++ b/arch/x86/kvm/paging_tmpl.h
    @@ -588,7 +588,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
    unsigned pte_access;
    pt_element_t gpte;
    gpa_t pte_gpa;
    - gfn_t gfn = sp->gfns[i];
    + gfn_t gfn;

    if (!is_shadow_present_pte(sp->spt[i]))
    continue;
    @@ -599,8 +599,9 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
    sizeof(pt_element_t)))
    return -EINVAL;

    - if (gpte_to_gfn(gpte) != gfn || !is_present_gpte(gpte) ||
    - !(gpte & PT_ACCESSED_MASK)) {
    + gfn = gpte_to_gfn(gpte);
    + if (unalias_gfn(vcpu->kvm, gfn) != sp->gfns[i] ||
    + !is_present_gpte(gpte) || !(gpte & PT_ACCESSED_MASK)) {
    u64 nonpresent;

    rmap_remove(vcpu->kvm, &sp->spt[i]);
    --
    1.6.1.2



    \
     
     \ /
      Last update: 2010-05-13 04:13    [W:0.020 / U:6.396 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site