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KVM: x86: Explicitly pass an exception struct to check_intercept

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Explicitly pass an exception struct when checking for intercept from
the emulator, which eliminates the last reference to arch.emulate_ctxt
in vendor specific code.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2020-02-18 15:29:42 -08:00 committed by Paolo Bonzini
parent 2e3bb4d886
commit 21f1b8f29e
4 changed files with 10 additions and 7 deletions
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3
arch/x86/include/asm/kvm_host.h
View file

@ -1170,7 +1170,8 @@ struct kvm_x86_ops {
int (*check_intercept)(struct kvm_vcpu *vcpu,
struct x86_instruction_info *info,
enum x86_intercept_stage stage);
enum x86_intercept_stage stage,
struct x86_exception *exception);
void (*handle_exit_irqoff)(struct kvm_vcpu *vcpu,
enum exit_fastpath_completion *exit_fastpath);
bool (*mpx_supported)(void);

3
arch/x86/kvm/svm.c
View file

@ -6175,7 +6175,8 @@ static const struct __x86_intercept {
static int svm_check_intercept(struct kvm_vcpu *vcpu,
struct x86_instruction_info *info,
enum x86_intercept_stage stage)
enum x86_intercept_stage stage,
struct x86_exception *exception)
{
struct vcpu_svm *svm = to_svm(vcpu);
int vmexit, ret = X86EMUL_CONTINUE;

8
arch/x86/kvm/vmx/vmx.c
View file

@ -7174,10 +7174,10 @@ static int vmx_check_intercept_io(struct kvm_vcpu *vcpu,
static int vmx_check_intercept(struct kvm_vcpu *vcpu,
struct x86_instruction_info *info,
enum x86_intercept_stage stage)
enum x86_intercept_stage stage,
struct x86_exception *exception)
{
struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
switch (info->intercept) {
/*
@ -7186,8 +7186,8 @@ static int vmx_check_intercept(struct kvm_vcpu *vcpu,
*/
case x86_intercept_rdtscp:
if (!nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDTSCP)) {
ctxt->exception.vector = UD_VECTOR;
ctxt->exception.error_code_valid = false;
exception->vector = UD_VECTOR;
exception->error_code_valid = false;
return X86EMUL_PROPAGATE_FAULT;
}
break;

3
arch/x86/kvm/x86.c
View file

@ -6212,7 +6212,8 @@ static int emulator_intercept(struct x86_emulate_ctxt *ctxt,
struct x86_instruction_info *info,
enum x86_intercept_stage stage)
{
return kvm_x86_ops->check_intercept(emul_to_vcpu(ctxt), info, stage);
return kvm_x86_ops->check_intercept(emul_to_vcpu(ctxt), info, stage,
&ctxt->exception);
}
static bool emulator_get_cpuid(struct x86_emulate_ctxt *ctxt,