* [PATCH] KVM: x86: allow TSC deadline timer on all hosts
@ 2015-01-08 14:59 Radim Krčmář
2015-01-08 16:23 ` Paolo Bonzini
0 siblings, 1 reply; 2+ messages in thread
From: Radim Krčmář @ 2015-01-08 14:59 UTC (permalink / raw)
To: linux-kernel; +Cc: kvm, Paolo Bonzini, Marcelo Tosatti
Emulation does not utilize the feature.
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
---
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;
--
2.2.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] KVM: x86: allow TSC deadline timer on all hosts
2015-01-08 14:59 [PATCH] KVM: x86: allow TSC deadline timer on all hosts Radim Krčmář
@ 2015-01-08 16:23 ` Paolo Bonzini
0 siblings, 0 replies; 2+ messages in thread
From: Paolo Bonzini @ 2015-01-08 16:23 UTC (permalink / raw)
To: Radim Krčmář, linux-kernel; +Cc: kvm, Marcelo Tosatti
On 08/01/2015 15:59, Radim Krčmář wrote:
> Emulation does not utilize the feature.
Indeed... nice :)
Applied to kvm/queue, thanks.
Paolo
> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
> ---
> 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;
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-01-08 16:23 ` Paolo Bonzini
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