From: Andy Lutomirski <luto@amacapital.net>
To: Clemens Ladisch <clemens@ladisch.de>,
Feng Tang <feng.tang@intel.com>,
tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: hpet: Don't default CONFIG_HPET_TIMER to be y for X86_64
Date: Thu, 27 Mar 2014 12:52:57 -0700 [thread overview]
Message-ID: <53348199.7070207@mit.edu> (raw)
In-Reply-To: <53340561.4050708@ladisch.de>
On 03/27/2014 04:02 AM, Clemens Ladisch wrote:
> Feng Tang wrote:
>> On many new phone/tablet platforms like Baytrail/Merrifield etc,
>> the HPET are either defeatured or has some problem to be used
>> as a reliable timer. As these platforms also have X86_64, we
>> should not make HPET_TIMER default y for all X86_64.
Wouldn't it be better to fix the hpet driver so that the hpet doesn't
used on these platforms?
>
> The help text still says:
> | You can safely choose Y here. [...]
> | Choose N to continue using the legacy 8254 timer.
>
> Are these statements still true for those platforms?
They aren't true for modern desktop and server platforms -- the TSC is
used regardless of hpet availability.
>
>
> Regards,
> Clemens
>
next prev parent reply other threads:[~2014-03-27 19:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-27 7:45 [PATCH] x86: hpet: Don't default CONFIG_HPET_TIMER to be y for X86_64 Feng Tang
2014-03-27 11:02 ` Clemens Ladisch
2014-03-27 19:52 ` Andy Lutomirski [this message]
2014-03-27 21:27 ` John Stultz
2014-03-27 21:33 ` Andy Lutomirski
2014-03-27 21:52 ` John Stultz
2014-03-28 2:43 ` Feng Tang
2014-03-28 2:48 ` Feng Tang
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