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From: Paolo Bonzini <pbonzini@redhat.com>
To: "Jianyong Wu (Arm Technology China)" <Jianyong.Wu@arm.com>,
	Marc Zyngier <maz@kernel.org>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"yangbo.lu@nxp.com" <yangbo.lu@nxp.com>,
	"john.stultz@linaro.org" <john.stultz@linaro.org>,
	"tglx@linutronix.de" <tglx@linutronix.de>,
	"sean.j.christopherson@intel.com"
	<sean.j.christopherson@intel.com>,
	"richardcochran@gmail.com" <richardcochran@gmail.com>,
	Mark Rutland <Mark.Rutland@arm.com>,
	Will Deacon <Will.Deacon@arm.com>,
	Suzuki Poulose <Suzuki.Poulose@arm.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	Steve Capper <Steve.Capper@arm.com>,
	"Kaly Xin (Arm Technology China)" <Kaly.Xin@arm.com>,
	"Justin He (Arm Technology China)" <Justin.He@arm.com>,
	nd <nd@arm.com>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [RFC PATCH v3 4/6] psci: Add hvc call service for ptp_kvm.
Date: Mon, 14 Oct 2019 08:58:54 +0200	[thread overview]
Message-ID: <fc847a82-49cb-c931-617c-82ef5531963e@redhat.com> (raw)
In-Reply-To: <HE1PR0801MB167635A4AA59FD93C45872E4F4900@HE1PR0801MB1676.eurprd08.prod.outlook.com>

On 14/10/19 07:50, Jianyong Wu (Arm Technology China) wrote:
>>
>> John (Stultz), does that sound good to you?  The context is that Jianyong
>> would like to add a hypercall that returns a (cycles,
>> nanoseconds) pair to the guest.  On x86 we're relying on the vclock_mode
>> field that is already there for the vDSO, but being able to just use
>> ktime_get_snapshot would be much nicer.
>>
> Could I add struct clocksource to system_time_snapshot struct in next version of my patch set?

Yes, I say go ahead.  At least it will get closer to a final design.

Paolo


  reply	other threads:[~2019-10-14  6:59 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-18  8:07 [RFC PATCH v3 0/6] Enable ptp_kvm for arm64 Jianyong Wu
2019-09-18  8:07 ` [RFC PATCH v3 1/6] psci: Export psci_ops.conduit symbol as modules will use it Jianyong Wu
2019-09-18  8:07 ` [RFC PATCH v3 2/6] ptp: Reorganize ptp_kvm modules to make it arch-independent Jianyong Wu
2019-09-18  8:07 ` [RFC PATCH v3 3/6] timekeeping: Expose API allowing retrival of current clocksource and counter value Jianyong Wu
2019-09-18  8:29   ` Paolo Bonzini
2019-09-18  8:07 ` [RFC PATCH v3 4/6] psci: Add hvc call service for ptp_kvm Jianyong Wu
2019-09-18  8:25   ` Paolo Bonzini
2019-09-18  9:57     ` Jianyong Wu (Arm Technology China)
2019-09-18 10:23       ` Paolo Bonzini
2019-09-19  9:46         ` Jianyong Wu (Arm Technology China)
2019-09-19 11:07           ` Paolo Bonzini
2019-09-19 11:39             ` Marc Zyngier
2019-09-19 12:13               ` Paolo Bonzini
2019-09-23  3:19                 ` Jianyong Wu (Arm Technology China)
2019-10-09  5:21                 ` Jianyong Wu (Arm Technology China)
2019-10-09  6:36                   ` Paolo Bonzini
2019-10-09  8:18                     ` Jianyong Wu (Arm Technology China)
2019-10-09  9:13                       ` Paolo Bonzini
2019-10-09 16:05                         ` John Stultz
2019-10-09 20:56                           ` Paolo Bonzini
2019-10-14  5:50                         ` Jianyong Wu (Arm Technology China)
2019-10-14  6:58                           ` Paolo Bonzini [this message]
2019-09-23  4:57             ` Jianyong Wu (Arm Technology China)
2019-09-24 14:20               ` Paolo Bonzini
2019-09-25 10:27                 ` Jianyong Wu (Arm Technology China)
2019-09-18  8:07 ` [RFC PATCH v3 5/6] ptp: arm64: Enable ptp_kvm for arm64 Jianyong Wu
2019-09-18  8:07 ` [RFC PATCH v3 6/6] kvm: arm64: Add capability check extension for ptp_kvm Jianyong Wu

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