From: Marc Zyngier <maz@kernel•org>
To: Jianyong Wu <jianyong.wu@arm•com>
Cc: netdev@vger•kernel.org, yangbo.lu@nxp•com,
john.stultz@linaro•org, tglx@linutronix•de, pbonzini@redhat•com,
sean.j.christopherson@intel•com, richardcochran@gmail•com,
Mark.Rutland@arm•com, will@kernel•org, suzuki.poulose@arm•com,
Andre.Przywara@arm•com, steven.price@arm•com,
linux-kernel@vger•kernel.org,
linux-arm-kernel@lists•infradead.org,
kvmarm@lists•cs.columbia.edu, kvm@vger•kernel.org,
Steve.Capper@arm•com, justin.he@arm•com, nd@arm•com
Subject: Re: [PATCH v16 9/9] arm64: Add kvm capability check extension for ptp_kvm
Date: Tue, 02 Feb 2021 13:44:47 +0000 [thread overview]
Message-ID: <13893254f802799ba44b9a35317b32f5@kernel.org> (raw)
In-Reply-To: <20201209060932.212364-10-jianyong.wu@arm.com>
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...
next prev parent reply other threads:[~2021-02-02 19:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-09 6:09 [PATCH v16 0/9] Enable ptp_kvm for arm/arm64 Jianyong Wu
2020-12-09 6:09 ` [PATCH v16 1/9] arm64: Probe for the presence of KVM hypervisor Jianyong Wu
2021-02-02 13:18 ` Marc Zyngier
2020-12-09 6:09 ` [PATCH v16 2/9] arm/arm64: KVM: Advertise KVM UID to guests via SMCCC Jianyong Wu
2020-12-09 6:09 ` [PATCH v16 3/9] ptp: Reorganize ptp_kvm module to make it arch-independent Jianyong Wu
2020-12-09 10:23 ` kernel test robot
2020-12-09 10:23 ` [RFC PATCH] ptp: clock_pair_gpa can be static kernel test robot
2021-02-02 13:23 ` [PATCH v16 3/9] ptp: Reorganize ptp_kvm module to make it arch-independent Marc Zyngier
2020-12-09 6:09 ` [PATCH v16 4/9] time: Add mechanism to recognize clocksource in time_get_snapshot Jianyong Wu
2020-12-09 6:09 ` [PATCH v16 5/9] clocksource: Add clocksource id for arm arch counter Jianyong Wu
2020-12-09 6:09 ` [PATCH v16 6/9] arm64/kvm: Add hypercall service for kvm ptp Jianyong Wu
2021-02-02 13:32 ` Marc Zyngier
2020-12-09 6:09 ` [PATCH v16 7/9] ptp: arm/arm64: Enable ptp_kvm for arm/arm64 Jianyong Wu
2021-02-02 13:37 ` Marc Zyngier
2020-12-09 6:09 ` [PATCH v16 8/9] doc: add ptp_kvm introduction for arm64 support Jianyong Wu
2021-02-02 13:43 ` Marc Zyngier
2020-12-09 6:09 ` [PATCH v16 9/9] arm64: Add kvm capability check extension for ptp_kvm Jianyong Wu
2021-02-02 13:44 ` Marc Zyngier [this message]
2021-01-06 8:29 ` [PATCH v16 0/9] Enable ptp_kvm for arm/arm64 Jianyong Wu
2021-02-02 14:15 ` Marc Zyngier
2021-02-03 2:40 ` Jianyong Wu
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