diff mbox series

[v15,9/9] arm64: Add kvm capability check extension for ptp_kvm

Message ID 20201111062211.33144-10-jianyong.wu@arm.com (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series Enable ptp_kvm for arm/arm64 | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Jianyong Wu Nov. 11, 2020, 6:22 a.m. UTC
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 mbox series

Patch

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 5750ec34960e..c05279de507d 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -182,6 +182,7 @@  int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 	case KVM_CAP_ARM_IRQ_LINE_LAYOUT_2:
 	case KVM_CAP_ARM_NISV_TO_USER:
 	case KVM_CAP_ARM_INJECT_EXT_DABT:
+	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