From: Jianyong Wu <jianyong.wu@arm.com>
To: netdev@vger.kernel.org, pbonzini@redhat.com,
sean.j.christopherson@intel.com, maz@kernel.org,
richardcochran@gmail.com, Mark.Rutland@arm.com,
Will.Deacon@arm.com, suzuki.poulose@arm.com
Cc: linux-kernel@vger.kernel.org, Steve.Capper@arm.com,
Kaly.Xin@arm.com, justin.he@arm.com, jianyong.wu@arm.com,
nd@arm.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/6] kvm: add kvm ptp capability extension for arm64
Date: Tue, 17 Sep 2019 07:24:30 -0400 [thread overview]
Message-ID: <20190917112430.45680-7-jianyong.wu@arm.com> (raw)
In-Reply-To: <20190917112430.45680-1-jianyong.wu@arm.com>
Let userspace check if there is kvm ptp service in host.
before VMs migrate to a another host, VMM may check if this
cap is available to determine the migration behaviour.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Suggested-by: Marc Zyngier <maz@kernel.org>
---
include/uapi/linux/kvm.h | 1 +
virt/kvm/arm/arm.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 2fe12b40d503..a0bff6002bd9 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -993,6 +993,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_ARM_SVE 170
#define KVM_CAP_ARM_PTRAUTH_ADDRESS 171
#define KVM_CAP_ARM_PTRAUTH_GENERIC 172
+#define KVM_CAP_ARM_KVM_PTP 173
#ifdef KVM_CAP_IRQ_ROUTING
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index bd5c55916d0d..80999985160b 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -201,6 +201,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_MP_STATE:
case KVM_CAP_IMMEDIATE_EXIT:
case KVM_CAP_VCPU_EVENTS:
+ case KVM_CAP_ARM_KVM_PTP:
r = 1;
break;
case KVM_CAP_ARM_SET_DEVICE_ADDR:
--
2.17.1
prev parent reply other threads:[~2019-09-17 11:25 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 11:24 [RFC PATCH v2 0/6] Enable ptp_kvm for arm64 Jianyong Wu
2019-09-17 11:24 ` [RFC PATCH v2 1/6] Export psci_ops.conduit symbol as modules will use it Jianyong Wu
2019-09-17 11:24 ` [RFC PATCH v2 2/6] reorganize ptp_kvm modules to make it arch-independent Jianyong Wu
2019-09-17 11:24 ` [PATCH 3/6] Timer: expose monotonic clock and counter value Jianyong Wu
2019-09-17 17:10 ` Marc Zyngier
2019-09-18 2:50 ` Jianyong Wu (Arm Technology China)
2019-09-18 3:42 ` Richard Cochran
2019-09-18 6:01 ` Jianyong Wu (Arm Technology China)
2019-09-17 11:24 ` [RFC PATCH v2 4/6] arm64: Add hvc call service for ptp_kvm Jianyong Wu
2019-09-17 11:24 ` [RFC PATCH V2 5/6] Enable ptp_kvm for arm64 Jianyong Wu
2019-09-17 11:24 ` Jianyong Wu [this message]
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