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| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2015-08-05 12:04:24 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-08-05 12:47:24 +0200 |
| commit | c258b62b264fdc469b6d3610a907708068145e3b (patch) | |
| tree | 57c870353bbb93da102e8e26deb7128357523280 /arch/x86/kvm/svm.c | |
| parent | 81b8eebbc3511bfa21520314b07988a875a4d066 (diff) | |
| download | talos-op-linux-c258b62b264fdc469b6d3610a907708068145e3b.tar.gz talos-op-linux-c258b62b264fdc469b6d3610a907708068145e3b.zip | |
KVM: MMU: introduce the framework to check zero bits on sptes
We have abstracted the data struct and functions which are used to check
reserved bit on guest page tables, now we extend the logic to check
zero bits on shadow page tables
The zero bits on sptes include not only reserved bits on hardware but also
the bits that SPTEs willnever use. For example, shadow pages will never
use GB pages unless the guest uses them too.
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index d1a114d8d22b..74d825716f4f 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2107,6 +2107,7 @@ static void nested_svm_init_mmu_context(struct kvm_vcpu *vcpu) vcpu->arch.mmu.get_pdptr = nested_svm_get_tdp_pdptr; vcpu->arch.mmu.inject_page_fault = nested_svm_inject_npf_exit; vcpu->arch.mmu.shadow_root_level = get_npt_level(); + reset_shadow_zero_bits_mask(vcpu, &vcpu->arch.mmu); vcpu->arch.walk_mmu = &vcpu->arch.nested_mmu; } |
