linux-kernel - Re: [PATCH v5 4/6] psci: Add hvc call service for ptp

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Message-ID: <5e344920-1460-337c-9950-858165d37d14@redhat.com>
Date:   Wed, 16 Oct 2019 09:42:59 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Jianyong Wu <jianyong.wu@....com>, netdev@...r.kernel.org,
        yangbo.lu@....com, john.stultz@...aro.org,
        sean.j.christopherson@...el.com, maz@...nel.org,
        richardcochran@...il.com, Mark.Rutland@....com, will@...nel.org,
        suzuki.poulose@....com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        kvm@...r.kernel.org, Steve.Capper@....com, Kaly.Xin@....com,
        justin.he@....com, nd@....com
Subject: Re: [PATCH v5 4/6] psci: Add hvc call service for ptp_kvm.

On 16/10/19 09:31, Thomas Gleixner wrote:
>> 3) move the implementation of the hypercall to
>> drivers/clocksource/arm_arch_timer.c, so that it can call
>> ktime_get_snapshot(&systime_snapshot, &clocksource_counter);
>
> And then you implement a gazillion of those functions for every
> arch/subarch which has a similar requirement. Pointless exercise.
>
> Having the ID is trivial enough and the storage space is not really a
> concern.

Ok, good.

Paolo