KVM: x86: trap invlpg

[mirror_ubuntu-artful-kernel.git] / arch / x86 / kvm / mmu.c

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 9d8c4bb68a816a62d78281153999929e6c4794fa..e89af1df4fcd940b54855968a0cd3cfa250cd5ed 100644 (file)
--- 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;