From: Jianyong Wu <jianyong.wu@arm.com>
To: netdev@vger.kernel.org, yangbo.lu@nxp.com,
john.stultz@linaro.org, tglx@linutronix.de, pbonzini@redhat.com,
sean.j.christopherson@intel.com, maz@kernel.org,
richardcochran@gmail.com, Mark.Rutland@arm.com, will@kernel.org,
suzuki.poulose@arm.com, steven.price@arm.com
Cc: justin.he@arm.com, Wei.Chen@arm.com, kvm@vger.kernel.org,
Steve.Capper@arm.com, jianyong.wu@arm.com,
linux-kernel@vger.kernel.org, Kaly.Xin@arm.com, nd@arm.com,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v12 11/11] arm64: Add kvm capability check extension for ptp_kvm
Date: Fri, 22 May 2020 16:37:24 +0800 [thread overview]
Message-ID: <20200522083724.38182-12-jianyong.wu@arm.com> (raw)
In-Reply-To: <20200522083724.38182-1-jianyong.wu@arm.com>
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>
---
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 428c7dde6b4b..668049ad78e1 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1017,6 +1017,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_S390_VCPU_RESETS 179
#define KVM_CAP_S390_PROTECTED 180
#define KVM_CAP_PPC_SECURE_GUEST 181
+#define KVM_CAP_ARM_KVM_PTP 182
#ifdef KVM_CAP_IRQ_ROUTING
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 48d0ec44ad77..4726a88949f5 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -195,6 +195,7 @@ 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_ARM_KVM_PTP:
r = 1;
break;
case KVM_CAP_ARM_SET_DEVICE_ADDR:
--
2.17.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
prev parent reply other threads:[~2020-05-22 8:42 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-22 8:37 [RFC PATCH v12 0/11] Enable ptp_kvm for arm64 Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 01/11] arm64: Probe for the presence of KVM hypervisor services during boot Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 02/11] arm/arm64: KVM: Advertise KVM UID to guests via SMCCC Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 03/11] psci: export smccc conduit get helper Jianyong Wu
2020-05-22 13:12 ` Sudeep Holla
2020-05-25 1:37 ` Jianyong Wu
2020-05-26 10:10 ` Sudeep Holla
2020-05-27 1:18 ` Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 04/11] ptp: Reorganize ptp_kvm modules to make it arch-independent Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 05/11] time: Add mechanism to recognize clocksource in time_get_snapshot Jianyong Wu
2020-05-28 16:36 ` Thomas Gleixner
2020-05-29 1:05 ` Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 06/11] clocksource: Add clocksource id for arm arch counter Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 07/11] psci: Add hypercall service for kvm ptp Jianyong Wu
2020-05-22 14:18 ` Steven Price
2020-05-25 2:11 ` Jianyong Wu
2020-05-26 11:02 ` Steven Price
2020-05-27 6:06 ` Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 08/11] ptp: arm64: Enable ptp_kvm for arm/arm64 Jianyong Wu
2020-05-22 8:37 ` [RFC PATCH v12 09/11] ptp: extend input argument for getcrosstimestamp API Jianyong Wu
2020-05-24 1:42 ` Richard Cochran
2020-05-22 8:37 ` [RFC PATCH v12 10/11] arm64: add mechanism to let user choose which counter to return Jianyong Wu
2020-05-24 1:47 ` Richard Cochran
2020-05-24 2:11 ` Richard Cochran
2020-05-25 4:50 ` Jianyong Wu
2020-05-25 6:16 ` Richard Cochran
2020-05-25 6:29 ` Jianyong Wu
2020-05-25 9:17 ` Marc Zyngier
2020-05-25 14:18 ` Jianyong Wu
2020-05-25 15:28 ` Marc Zyngier
2020-05-22 8:37 ` Jianyong Wu [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200522083724.38182-12-jianyong.wu@arm.com \
--to=jianyong.wu@arm.com \
--cc=Kaly.Xin@arm.com \
--cc=Mark.Rutland@arm.com \
--cc=Steve.Capper@arm.com \
--cc=Wei.Chen@arm.com \
--cc=john.stultz@linaro.org \
--cc=justin.he@arm.com \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maz@kernel.org \
--cc=nd@arm.com \
--cc=netdev@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=richardcochran@gmail.com \
--cc=sean.j.christopherson@intel.com \
--cc=steven.price@arm.com \
--cc=suzuki.poulose@arm.com \
--cc=tglx@linutronix.de \
--cc=will@kernel.org \
--cc=yangbo.lu@nxp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).