diff options
| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2015-05-13 14:42:27 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-19 20:52:42 +0200 |
| commit | efdfe536d8c643391e19d5726b072f82964bfbdb (patch) | |
| tree | 050f927bab93b172f01f5d872762eacd811560be /arch/x86/kvm/mmu.h | |
| parent | d69afbc6b1b5d0579f13d1a6339d952c4f60a9f4 (diff) | |
KVM: MMU: fix MTRR update
Currently, whenever guest MTRR registers are changed
kvm_mmu_reset_context is called to switch to the new root shadow page
table, however, it's useless since:
1) the cache type is not cached into shadow page's attribute so that
the original root shadow page will be reused
2) the cache type is set on the last spte, that means we should sync
the last sptes when MTRR is changed
This patch fixs this issue by drop all the spte in the gfn range which
is being updated by MTRR
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.h')
| -rw-r--r-- | arch/x86/kvm/mmu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index 72bb33f70c16..398d21c0f6dd 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -171,4 +171,5 @@ static inline bool permission_fault(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, } void kvm_mmu_invalidate_zap_all_pages(struct kvm *kvm); +void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end); #endif |