Re: [RFC PATCH 8/8] svm: Allow AVIC with in-kernel irqchip mode

[Alex Williamson]

On Mon, 4 Feb 2019 14:42:32 +0000
"Suthikulpanit, Suravee" <Suravee.Suthikulpanit@xxxxxxx> wrote:

> Once the IRQ ack notifier for in-kernel PIT is no longer required
> and run-time AVIC activate/deactivate is supported, we can remove
> the kernel irqchip split mode requirement for AVIC.
> 
> Hence, remove the check for irqchip split mode when enabling AVIC.

Yay!  Could we also at this point make avic enabled by default or are
there remaining incompatibilities?  Thanks,

Alex


> Cc: Radim KrÄmÃÅ <rkrcmar@xxxxxxxxxx>
> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
> ---
>  arch/x86/kvm/svm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> index 580ab40ba207..24dfa6a93711 100644
> --- a/arch/x86/kvm/svm.c
> +++ b/arch/x86/kvm/svm.c
> @@ -5157,7 +5157,7 @@ static void svm_set_virtual_apic_mode(struct kvm_vcpu *vcpu)
>  
>  static bool svm_get_enable_apicv(struct kvm_vcpu *vcpu)
>  {
> -	return avic && irqchip_split(vcpu->kvm);
> +	return avic;
>  }
>  
>  static void svm_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr)