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authorAlexander Graf <agraf@suse.de>2009-06-15 15:21:24 +0200
committerAvi Kivity <avi@redhat.com>2009-09-10 08:32:58 +0300
commitff092385e8285c03d8b148f42f46f98c5f4becd5 (patch)
treeb011de50b5802e20b7b0d39385b29e999f1b3023 /arch
parent3c5d0a44b011e0a1d857452f05c698e1008b4b4a (diff)
downloadop-kernel-dev-ff092385e8285c03d8b148f42f46f98c5f4becd5.zip
op-kernel-dev-ff092385e8285c03d8b148f42f46f98c5f4becd5.tar.gz
KVM: SVM: Implement INVLPGA
SVM adds another way to do INVLPG by ASID which Hyper-V makes use of, so let's implement it! For now we just do the same thing invlpg does, as asid switching means we flush the mmu anyways. That might change one day though. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/svm.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 146c17d..be69979 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1880,6 +1880,19 @@ static int clgi_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
return 1;
}
+static int invlpga_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
+{
+ struct kvm_vcpu *vcpu = &svm->vcpu;
+ nsvm_printk("INVLPGA\n");
+
+ /* Let's treat INVLPGA the same as INVLPG (can be optimized!) */
+ kvm_mmu_invlpg(vcpu, vcpu->arch.regs[VCPU_REGS_RAX]);
+
+ svm->next_rip = kvm_rip_read(&svm->vcpu) + 3;
+ skip_emulated_instruction(&svm->vcpu);
+ return 1;
+}
+
static int invalid_op_interception(struct vcpu_svm *svm,
struct kvm_run *kvm_run)
{
@@ -2227,7 +2240,7 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm,
[SVM_EXIT_INVD] = emulate_on_interception,
[SVM_EXIT_HLT] = halt_interception,
[SVM_EXIT_INVLPG] = invlpg_interception,
- [SVM_EXIT_INVLPGA] = invalid_op_interception,
+ [SVM_EXIT_INVLPGA] = invlpga_interception,
[SVM_EXIT_IOIO] = io_interception,
[SVM_EXIT_MSR] = msr_interception,
[SVM_EXIT_TASK_SWITCH] = task_switch_interception,
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