diff mbox series

[RFC,10/11] KVM: nVMX: hyper-v: Hide more stuff under CONFIG_KVM_HYPERV

Message ID 20231010160300.1136799-11-vkuznets@redhat.com
State New
Headers
Series KVM: x86: Make Hyper-V emulation optional (AKA introduce CONFIG_KVM_HYPERV) |

Commit Message

Vitaly Kuznetsov Oct. 10, 2023, 4:02 p.m. UTC 
  'hv_evmcs_vmptr'/'hv_evmcs_map'/'hv_evmcs' fields in 'struct nested_vmx'
should not be used when !CONFIG_KVM_HYPERV, hide them when
!CONFIG_KVM_HYPERV.

No functional change intended.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
 arch/x86/kvm/vmx/nested.c | 2 ++
 arch/x86/kvm/vmx/vmx.c    | 3 +++
 arch/x86/kvm/vmx/vmx.h    | 2 ++
 3 files changed, 7 insertions(+)

Comments

Maxim Levitsky Oct. 12, 2023, 7:51 p.m. UTC | #1 
У вт, 2023-10-10 у 18:02 +0200, Vitaly Kuznetsov пише:
> 'hv_evmcs_vmptr'/'hv_evmcs_map'/'hv_evmcs' fields in 'struct nested_vmx'
> should not be used when !CONFIG_KVM_HYPERV, hide them when
> !CONFIG_KVM_HYPERV.
> 
> No functional change intended.
> 
> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
> ---
>  arch/x86/kvm/vmx/nested.c | 2 ++
>  arch/x86/kvm/vmx/vmx.c    | 3 +++
>  arch/x86/kvm/vmx/vmx.h    | 2 ++
>  3 files changed, 7 insertions(+)
> 
> diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
> index d539904d8f1e..10cb35cd7a19 100644
> --- a/arch/x86/kvm/vmx/nested.c
> +++ b/arch/x86/kvm/vmx/nested.c
> @@ -6650,6 +6650,7 @@ static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
>  			return -EINVAL;
>  
>  		set_current_vmptr(vmx, kvm_state->hdr.vmx.vmcs12_pa);
> +#ifdef CONFIG_KVM_HYPERV
>  	} else if (kvm_state->flags & KVM_STATE_NESTED_EVMCS) {
>  		/*
>  		 * nested_vmx_handle_enlightened_vmptrld() cannot be called
> @@ -6659,6 +6660,7 @@ static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
>  		 */
>  		vmx->nested.hv_evmcs_vmptr = EVMPTR_MAP_PENDING;
>  		kvm_make_request(KVM_REQ_GET_NESTED_STATE_PAGES, vcpu);
> +#endif
>  	} else {
>  		return -EINVAL;
>  	}
> diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
> index 04eb5d4d28bc..3b1bd3d97150 100644
> --- a/arch/x86/kvm/vmx/vmx.c
> +++ b/arch/x86/kvm/vmx/vmx.c
> @@ -4834,7 +4834,10 @@ static void __vmx_vcpu_reset(struct kvm_vcpu *vcpu)
>  	vmx->nested.posted_intr_nv = -1;
>  	vmx->nested.vmxon_ptr = INVALID_GPA;
>  	vmx->nested.current_vmptr = INVALID_GPA;
> +
> +#ifdef CONFIG_KVM_HYPERV
>  	vmx->nested.hv_evmcs_vmptr = EVMPTR_INVALID;
> +#endif
>  
>  	vcpu->arch.microcode_version = 0x100000000ULL;
>  	vmx->msr_ia32_feature_control_valid_bits = FEAT_CTL_LOCKED;
> diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
> index c2130d2c8e24..55addb8eef01 100644
> --- a/arch/x86/kvm/vmx/vmx.h
> +++ b/arch/x86/kvm/vmx/vmx.h
> @@ -241,9 +241,11 @@ struct nested_vmx {
>  		bool guest_mode;
>  	} smm;
>  
> +#ifdef CONFIG_KVM_HYPERV
>  	gpa_t hv_evmcs_vmptr;
>  	struct kvm_host_map hv_evmcs_map;
>  	struct hv_enlightened_vmcs *hv_evmcs;
> +#endif
>  };
>  
>  struct vcpu_vmx {
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>

Best regards,
	Maxim Levitsky
diff mbox series

Patch

diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index d539904d8f1e..10cb35cd7a19 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -6650,6 +6650,7 @@  static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
 			return -EINVAL;
 
 		set_current_vmptr(vmx, kvm_state->hdr.vmx.vmcs12_pa);
+#ifdef CONFIG_KVM_HYPERV
 	} else if (kvm_state->flags & KVM_STATE_NESTED_EVMCS) {
 		/*
 		 * nested_vmx_handle_enlightened_vmptrld() cannot be called
@@ -6659,6 +6660,7 @@  static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
 		 */
 		vmx->nested.hv_evmcs_vmptr = EVMPTR_MAP_PENDING;
 		kvm_make_request(KVM_REQ_GET_NESTED_STATE_PAGES, vcpu);
+#endif
 	} else {
 		return -EINVAL;
 	}
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 04eb5d4d28bc..3b1bd3d97150 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -4834,7 +4834,10 @@  static void __vmx_vcpu_reset(struct kvm_vcpu *vcpu)
 	vmx->nested.posted_intr_nv = -1;
 	vmx->nested.vmxon_ptr = INVALID_GPA;
 	vmx->nested.current_vmptr = INVALID_GPA;
+
+#ifdef CONFIG_KVM_HYPERV
 	vmx->nested.hv_evmcs_vmptr = EVMPTR_INVALID;
+#endif
 
 	vcpu->arch.microcode_version = 0x100000000ULL;
 	vmx->msr_ia32_feature_control_valid_bits = FEAT_CTL_LOCKED;
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
index c2130d2c8e24..55addb8eef01 100644
--- a/arch/x86/kvm/vmx/vmx.h
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -241,9 +241,11 @@  struct nested_vmx {
 		bool guest_mode;
 	} smm;
 
+#ifdef CONFIG_KVM_HYPERV
 	gpa_t hv_evmcs_vmptr;
 	struct kvm_host_map hv_evmcs_map;
 	struct hv_enlightened_vmcs *hv_evmcs;
+#endif
 };
 
 struct vcpu_vmx {