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, Andre.Przywara@arm.com,
steven.price@arm.com
Cc: justin.he@arm.com, kvm@vger.kernel.org, Steve.Capper@arm.com,
jianyong.wu@arm.com, linux-kernel@vger.kernel.org, nd@arm.com,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v15 9/9] arm64: Add kvm capability check extension for ptp_kvm
Date: Wed, 11 Nov 2020 14:22:11 +0800 [thread overview]
Message-ID: <20201111062211.33144-10-jianyong.wu@arm.com> (raw)
In-Reply-To: <20201111062211.33144-1-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>
---
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 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
--
2.17.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-11-11 6:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-11 6:22 [PATCH v15 0/9] Enable ptp_kvm for arm/arm64 Jianyong Wu
2020-11-11 6:22 ` [PATCH v15 1/9] arm64: Probe for the presence of KVM hypervisor Jianyong Wu
2020-11-11 6:22 ` [PATCH v15 2/9] arm/arm64: KVM: Advertise KVM UID to guests via SMCCC Jianyong Wu
2020-11-11 6:22 ` [PATCH v15 3/9] ptp: Reorganize ptp_kvm module to make it arch-independent Jianyong Wu
2020-11-11 6:22 ` [PATCH v15 4/9] time: Add mechanism to recognize clocksource in time_get_snapshot Jianyong Wu
2020-11-11 6:22 ` [PATCH v15 5/9] clocksource: Add clocksource id for arm arch counter Jianyong Wu
2020-11-11 6:22 ` [PATCH v15 6/9] arm64/kvm: Add hypercall service for kvm ptp Jianyong Wu
2020-11-23 10:44 ` Marc Zyngier
2020-11-23 11:59 ` Marc Zyngier
2020-11-24 5:11 ` Jianyong Wu
2020-11-24 5:20 ` Jianyong Wu
2020-11-24 9:07 ` Marc Zyngier
2020-11-24 10:14 ` Jianyong Wu
2020-11-11 6:22 ` [PATCH v15 7/9] ptp: arm/arm64: Enable ptp_kvm for arm/arm64 Jianyong Wu
2020-11-23 10:49 ` Marc Zyngier
2020-11-24 5:37 ` Jianyong Wu
2020-11-24 9:04 ` Marc Zyngier
2020-11-24 10:18 ` Jianyong Wu
2020-11-11 6:22 ` [PATCH v15 8/9] doc: add ptp_kvm introduction for arm64 support Jianyong Wu
2020-11-23 10:58 ` Marc Zyngier
2020-11-24 5:21 ` Jianyong Wu
2020-11-11 6:22 ` Jianyong Wu [this message]
2020-11-23 9:26 ` [PATCH v15 0/9] Enable ptp_kvm for arm/arm64 Jianyong Wu
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=20201111062211.33144-10-jianyong.wu@arm.com \
--to=jianyong.wu@arm.com \
--cc=Andre.Przywara@arm.com \
--cc=Mark.Rutland@arm.com \
--cc=Steve.Capper@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).