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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2008-09-23 16:18:35 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-10-15 12:25:21 (GMT) |
| commit | a7052897b3bcd568a9f5bfaa558957039e7e7ec0 (patch) | |
| tree | 5495e806032f0fddf4de1ad4381c9b3f5d49dfbc /arch/x86/kvm/mmu.c | |
| parent | 0ba73cdadb8ac172f396df7e23c4a9cebd59b550 (diff) | |
| download | linux-a7052897b3bcd568a9f5bfaa558957039e7e7ec0.tar.xz | |
KVM: x86: trap invlpg
With pages out of sync invlpg needs to be trapped. For now simply nuke
the entry.
Untested on AMD.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 9d8c4bb..e89af1d 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -877,6 +877,10 @@ static int nonpaging_sync_page(struct kvm_vcpu *vcpu, return 1; } +static void nonpaging_invlpg(struct kvm_vcpu *vcpu, gva_t gva) +{ +} + static struct kvm_mmu_page *kvm_mmu_lookup_page(struct kvm *kvm, gfn_t gfn) { unsigned index; @@ -1589,6 +1593,7 @@ static int nonpaging_init_context(struct kvm_vcpu *vcpu) context->free = nonpaging_free; context->prefetch_page = nonpaging_prefetch_page; context->sync_page = nonpaging_sync_page; + context->invlpg = nonpaging_invlpg; context->root_level = 0; context->shadow_root_level = PT32E_ROOT_LEVEL; context->root_hpa = INVALID_PAGE; @@ -1637,6 +1642,7 @@ static int paging64_init_context_common(struct kvm_vcpu *vcpu, int level) context->gva_to_gpa = paging64_gva_to_gpa; context->prefetch_page = paging64_prefetch_page; context->sync_page = paging64_sync_page; + context->invlpg = paging64_invlpg; context->free = paging_free; context->root_level = level; context->shadow_root_level = level; @@ -1659,6 +1665,7 @@ static int paging32_init_context(struct kvm_vcpu *vcpu) context->free = paging_free; context->prefetch_page = paging32_prefetch_page; context->sync_page = paging32_sync_page; + context->invlpg = paging32_invlpg; context->root_level = PT32_ROOT_LEVEL; context->shadow_root_level = PT32E_ROOT_LEVEL; context->root_hpa = INVALID_PAGE; @@ -1679,6 +1686,7 @@ static int init_kvm_tdp_mmu(struct kvm_vcpu *vcpu) context->free = nonpaging_free; context->prefetch_page = nonpaging_prefetch_page; context->sync_page = nonpaging_sync_page; + context->invlpg = nonpaging_invlpg; context->shadow_root_level = kvm_x86_ops->get_tdp_level(); context->root_hpa = INVALID_PAGE; @@ -2071,6 +2079,16 @@ out: } EXPORT_SYMBOL_GPL(kvm_mmu_page_fault); +void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva) +{ + spin_lock(&vcpu->kvm->mmu_lock); + vcpu->arch.mmu.invlpg(vcpu, gva); + spin_unlock(&vcpu->kvm->mmu_lock); + kvm_mmu_flush_tlb(vcpu); + ++vcpu->stat.invlpg; +} +EXPORT_SYMBOL_GPL(kvm_mmu_invlpg); + void kvm_enable_tdp(void) { tdp_enabled = true; |