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From: Marc Zyngier <maz@kernel.org>
To: Jianyong Wu <Jianyong.Wu@arm.com>
Cc: Mark Rutland <Mark.Rutland@arm.com>,
	Justin He <Justin.He@arm.com>,
	kvm@vger.kernel.org, Suzuki Poulose <Suzuki.Poulose@arm.com>,
	netdev@vger.kernel.org, richardcochran@gmail.com,
	Steve Capper <Steve.Capper@arm.com>,
	linux-kernel@vger.kernel.org, sean.j.christopherson@intel.com,
	Steven Price <Steven.Price@arm.com>,
	Andre Przywara <Andre.Przywara@arm.com>,
	john.stultz@linaro.org, yangbo.lu@nxp.com, pbonzini@redhat.com,
	tglx@linutronix.de, nd <nd@arm.com>,
	will@kernel.org, kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v15 6/9] arm64/kvm: Add hypercall service for kvm ptp.
Date: Tue, 24 Nov 2020 09:07:06 +0000	[thread overview]
Message-ID: <9133f26699c5fc08d0ea72acfa9aca3b@kernel.org> (raw)
In-Reply-To: <HE1PR0802MB255534CF7A04FB5A6CE99A67F4FB0@HE1PR0802MB2555.eurprd08.prod.outlook.com>

On 2020-11-24 05:20, Jianyong Wu wrote:
> Hi Marc,

[...]

>> > +/* ptp_kvm counter type ID */
>> > +#define ARM_PTP_VIRT_COUNTER			0
>> > +#define ARM_PTP_PHY_COUNTER			1
>> > +#define ARM_PTP_NONE_COUNTER			2
>> 
>> The architecture definitely doesn't have this last counter.
> 
> Yeah, this is just represent no counter data needed from guest.
> Some annotation should be added here.

I'd rather you remove it entirely, or explain why you really cannot
do without a fake counter.

         M.
-- 
Jazz is not dead. It just smells funny...

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  reply	other threads:[~2020-11-24  9:08 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 [this message]
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 ` [PATCH v15 9/9] arm64: Add kvm capability check extension for ptp_kvm Jianyong Wu
2020-11-23  9:26 ` [PATCH v15 0/9] Enable ptp_kvm for arm/arm64 Jianyong Wu

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