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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>
This commit is contained in:
Alexander Graf 2009-06-15 15:21:24 +02:00 committed by Avi Kivity
parent 3c5d0a44b0
commit ff092385e8
1 changed files with 14 additions and 1 deletions
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15
arch/x86/kvm/svm.c
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@ -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,