On Thu, 2022-09-29 at 13:20 -0400, Paolo Bonzini wrote:
> This ensures that all the relevant code is compiled out, in fact
> the process_smi stub can be removed too.
>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> ---
> arch/x86/include/asm/kvm_host.h | 2 ++
> arch/x86/kvm/smm.h | 1 -
> arch/x86/kvm/x86.c | 6 ++++++
> 3 files changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index d11697504471..d58d4a62b227 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -81,7 +81,9 @@
> #define KVM_REQ_NMI KVM_ARCH_REQ(9)
> #define KVM_REQ_PMU KVM_ARCH_REQ(10)
> #define KVM_REQ_PMI KVM_ARCH_REQ(11)
> +#ifdef CONFIG_KVM_SMM
> #define KVM_REQ_SMI KVM_ARCH_REQ(12)
> +#endif
> #define KVM_REQ_MASTERCLOCK_UPDATE KVM_ARCH_REQ(13)
> #define KVM_REQ_MCLOCK_INPROGRESS \
> KVM_ARCH_REQ_FLAGS(14, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
> diff --git a/arch/x86/kvm/smm.h b/arch/x86/kvm/smm.h
> index 7ccce6b655ca..a6795b93ba30 100644
> --- a/arch/x86/kvm/smm.h
> +++ b/arch/x86/kvm/smm.h
> @@ -28,7 +28,6 @@ void process_smi(struct kvm_vcpu *vcpu);
> static inline int kvm_inject_smi(struct kvm_vcpu *vcpu) { return -ENOTTY; }
> static inline bool is_smm(struct kvm_vcpu *vcpu) { return false; }
> static inline void kvm_smm_changed(struct kvm_vcpu *vcpu, bool in_smm) { WARN_ON_ONCE(1); }
> -static inline void process_smi(struct kvm_vcpu *vcpu) { WARN_ON_ONCE(1); }
>
> /*
> * emulator_leave_smm is used as a function pointer, so the
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index e22184bad92b..ba5661ee3fd7 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -5020,8 +5020,10 @@ static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu,
>
> process_nmi(vcpu);
>
> +#ifdef CONFIG_KVM_SMM
> if (kvm_check_request(KVM_REQ_SMI, vcpu))
> process_smi(vcpu);
> +#endif
>
> /*
> * KVM's ABI only allows for one exception to be migrated. Luckily,
> @@ -10194,8 +10196,10 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
> }
> if (kvm_check_request(KVM_REQ_STEAL_UPDATE, vcpu))
> record_steal_time(vcpu);
> +#ifdef CONFIG_KVM_SMM
> if (kvm_check_request(KVM_REQ_SMI, vcpu))
> process_smi(vcpu);
> +#endif
> if (kvm_check_request(KVM_REQ_NMI, vcpu))
> process_nmi(vcpu);
> if (kvm_check_request(KVM_REQ_PMU, vcpu))
> @@ -12539,7 +12543,9 @@ bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu)
> return true;
>
> if (kvm_test_request(KVM_REQ_NMI, vcpu) ||
> +#ifdef CONFIG_KVM_SMM
> kvm_test_request(KVM_REQ_SMI, vcpu) ||
> +#endif
> kvm_test_request(KVM_REQ_EVENT, vcpu))
> return true;
>
Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
Best regards,
Maxim Levitsky
