Commit f9a4d621 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

KVM: x86: introduce complete_emulated_msr callback 



This will be used by SEV-ES to inject MSR failure via the GHCB.

Reviewed-by: default avatarTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 8b474427

arch/x86/include/asm/kvm_host.h

+1 −0
Original line number Diff line number Diff line
@@ -1285,6 +1285,7 @@ struct kvm_x86_ops { 


	void (*migrate_timers)(struct kvm_vcpu *vcpu);

	void (*msr_filter_changed)(struct kvm_vcpu *vcpu);

	int (*complete_emulated_msr)(struct kvm_vcpu *vcpu, int err);

};



struct kvm_x86_nested_ops {

arch/x86/kvm/svm/svm.c

+1 −0
Original line number Diff line number Diff line
@@ -4306,6 +4306,7 @@ static struct kvm_x86_ops svm_x86_ops __initdata = { 
	.apic_init_signal_blocked = svm_apic_init_signal_blocked,



	.msr_filter_changed = svm_msr_filter_changed,

	.complete_emulated_msr = kvm_complete_insn_gp,

};



static struct kvm_x86_init_ops svm_init_ops __initdata = {

arch/x86/kvm/vmx/vmx.c

+1 −0
Original line number Diff line number Diff line
@@ -7701,6 +7701,7 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = { 
	.migrate_timers = vmx_migrate_timers,



	.msr_filter_changed = vmx_msr_filter_changed,

	.complete_emulated_msr = kvm_complete_insn_gp,

	.cpu_dirty_log_size = vmx_cpu_dirty_log_size,

};

arch/x86/kvm/x86.c

+4 −4
Original line number Diff line number Diff line
@@ -1642,12 +1642,12 @@ static int complete_emulated_rdmsr(struct kvm_vcpu *vcpu) 
		kvm_rdx_write(vcpu, vcpu->run->msr.data >> 32);

	}



	return kvm_complete_insn_gp(vcpu, err);

	return kvm_x86_ops.complete_emulated_msr(vcpu, err);

}



static int complete_emulated_wrmsr(struct kvm_vcpu *vcpu)

{

	return kvm_complete_insn_gp(vcpu, vcpu->run->msr.error);

	return kvm_x86_ops.complete_emulated_msr(vcpu, vcpu->run->msr.error);

}



static u64 kvm_msr_reason(int r)
@@ -1719,7 +1719,7 @@ int kvm_emulate_rdmsr(struct kvm_vcpu *vcpu) 
		trace_kvm_msr_read_ex(ecx);

	}



	return kvm_complete_insn_gp(vcpu, r);

	return kvm_x86_ops.complete_emulated_msr(vcpu, r);

}

EXPORT_SYMBOL_GPL(kvm_emulate_rdmsr);
@@ -1745,7 +1745,7 @@ int kvm_emulate_wrmsr(struct kvm_vcpu *vcpu) 
	else

		trace_kvm_msr_write_ex(ecx, data);



	return kvm_complete_insn_gp(vcpu, r);

	return kvm_x86_ops.complete_emulated_msr(vcpu, r);

}

EXPORT_SYMBOL_GPL(kvm_emulate_wrmsr);

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