Commit ff092385 authored by Alexander Graf's avatar Alexander Graf Committed by Avi Kivity
Browse files

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: default avatarAlexander Graf <agraf@suse.de>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 3c5d0a44

arch/x86/kvm/svm.c

+14 −1
Original line number Diff line number Diff line
@@ -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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