On Tue, 2021-05-18 at 16:43 +0200, Vitaly Kuznetsov wrote:
> Now that APICv/AVIC enablement is kept in common 'enable_apicv' variable,
> there's no need to call kvm_apicv_init() from vendor specific code.
>
> No functional change intended.
Minor nitpick: I don't see any invert here, but rather
a unification of SVM/VMX virtual apic enablement code.
Maybe update the subject a bit?
For the code:
Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
Best regards,
Maxim Levitsky
>
> Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
> ---
> arch/x86/include/asm/kvm_host.h | 1 -
> arch/x86/kvm/svm/svm.c | 1 -
> arch/x86/kvm/vmx/vmx.c | 1 -
> arch/x86/kvm/x86.c | 6 +++---
> 4 files changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index a2197fcf0e7c..bf5807d35339 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -1662,7 +1662,6 @@ gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
> struct x86_exception *exception);
>
> bool kvm_apicv_activated(struct kvm *kvm);
> -void kvm_apicv_init(struct kvm *kvm, bool enable);
> void kvm_vcpu_update_apicv(struct kvm_vcpu *vcpu);
> void kvm_request_apicv_update(struct kvm *kvm, bool activate,
> unsigned long bit);
> diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
> index 0d6ec34d1e4b..84f58e8b2f49 100644
> --- a/arch/x86/kvm/svm/svm.c
> +++ b/arch/x86/kvm/svm/svm.c
> @@ -4438,7 +4438,6 @@ static int svm_vm_init(struct kvm *kvm)
> return ret;
> }
>
> - kvm_apicv_init(kvm, enable_apicv);
> return 0;
> }
>
> diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
> index 5e9ba10e9c2d..697dd54c7df8 100644
> --- a/arch/x86/kvm/vmx/vmx.c
> +++ b/arch/x86/kvm/vmx/vmx.c
> @@ -7000,7 +7000,6 @@ static int vmx_vm_init(struct kvm *kvm)
> break;
> }
> }
> - kvm_apicv_init(kvm, enable_apicv);
> return 0;
> }
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 23fdbba6b394..22a1e2b438c3 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -8345,16 +8345,15 @@ bool kvm_apicv_activated(struct kvm *kvm)
> }
> EXPORT_SYMBOL_GPL(kvm_apicv_activated);
>
> -void kvm_apicv_init(struct kvm *kvm, bool enable)
> +static void kvm_apicv_init(struct kvm *kvm)
> {
> - if (enable)
> + if (enable_apicv)
> clear_bit(APICV_INHIBIT_REASON_DISABLE,
> &kvm->arch.apicv_inhibit_reasons);
> else
> set_bit(APICV_INHIBIT_REASON_DISABLE,
> &kvm->arch.apicv_inhibit_reasons);
> }
> -EXPORT_SYMBOL_GPL(kvm_apicv_init);
>
> static void kvm_sched_yield(struct kvm_vcpu *vcpu, unsigned long dest_id)
> {
> @@ -10739,6 +10738,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
> INIT_DELAYED_WORK(&kvm->arch.kvmclock_update_work, kvmclock_update_fn);
> INIT_DELAYED_WORK(&kvm->arch.kvmclock_sync_work, kvmclock_sync_fn);
>
> + kvm_apicv_init(kvm);
> kvm_hv_init_vm(kvm);
> kvm_page_track_init(kvm);
> kvm_mmu_init_vm(kvm);
