Re: [PATCH] KVM: x86: allow TSC deadline timer on all hosts

From: Paolo Bonzini
Date: Thu Jan 08 2015 - 11:24:01 EST




On 08/01/2015 15:59, Radim KrÄmÃÅ wrote:
> Emulation does not utilize the feature.

Indeed... nice :)

Applied to kvm/queue, thanks.

Paolo

> Signed-off-by: Radim KrÄmÃÅ <rkrcmar@xxxxxxxxxx>
> ---
> arch/x86/kvm/x86.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 933a373..ed879f1 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -2743,6 +2743,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
> case KVM_CAP_READONLY_MEM:
> case KVM_CAP_HYPERV_TIME:
> case KVM_CAP_IOAPIC_POLARITY_IGNORED:
> + case KVM_CAP_TSC_DEADLINE_TIMER:
> #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
> case KVM_CAP_ASSIGN_DEV_IRQ:
> case KVM_CAP_PCI_2_3:
> @@ -2781,9 +2782,6 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
> case KVM_CAP_TSC_CONTROL:
> r = kvm_has_tsc_control;
> break;
> - case KVM_CAP_TSC_DEADLINE_TIMER:
> - r = boot_cpu_has(X86_FEATURE_TSC_DEADLINE_TIMER);
> - break;
> default:
> r = 0;
> break;
>
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