Messages in this thread | | | Date | Tue, 02 Feb 2021 13:44:47 +0000 | From | Marc Zyngier <> | Subject | Re: [PATCH v16 9/9] arm64: Add kvm capability check extension for ptp_kvm |
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On 2020-12-09 06:09, Jianyong Wu wrote: > Let userspace check if there is kvm ptp service in host. > Before VMs migrate to another host, VMM may check if this > cap is available to determine the next behavior. > > Signed-off-by: Jianyong Wu <jianyong.wu@arm.com> > Suggested-by: Marc Zyngier <maz@kernel.org> > --- > arch/arm64/kvm/arm.c | 1 + > include/uapi/linux/kvm.h | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c > index f60f4a5e1a22..1bb1f64f9bb5 100644 > --- a/arch/arm64/kvm/arm.c > +++ b/arch/arm64/kvm/arm.c > @@ -199,6 +199,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, > long ext) > case KVM_CAP_ARM_INJECT_EXT_DABT: > case KVM_CAP_SET_GUEST_DEBUG: > case KVM_CAP_VCPU_ATTRIBUTES: > + case KVM_CAP_PTP_KVM: > r = 1; > break; > case KVM_CAP_ARM_SET_DEVICE_ADDR: > diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h > index ca41220b40b8..797c40bbc31f 100644 > --- a/include/uapi/linux/kvm.h > +++ b/include/uapi/linux/kvm.h > @@ -1053,6 +1053,7 @@ struct kvm_ppc_resize_hpt { > #define KVM_CAP_X86_USER_SPACE_MSR 188 > #define KVM_CAP_X86_MSR_FILTER 189 > #define KVM_CAP_ENFORCE_PV_FEATURE_CPUID 190 > +#define KVM_CAP_PTP_KVM 191 > > #ifdef KVM_CAP_IRQ_ROUTING
This really should be squashed with the patch implementing the hypercall.
Thanks,
M. -- Jazz is not dead. It just smells funny...
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