From: Clemens Ladisch <clemens@ladisch.de>
To: Feng Tang <feng.tang@intel.com>, Ingo Molnar <mingo@kernel.org>
Cc: tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com,
linux-kernel@vger.kernel.org,
John Stultz <john.stultz@linaro.org>,
Andy Lutomirski <luto@amacapital.net>
Subject: Re: [PATCH v2] x86: hpet: Don't default CONFIG_HPET_TIMER to be y for X86_64
Date: Fri, 28 Mar 2014 09:08:05 +0100 [thread overview]
Message-ID: <53352DE5.2090600@ladisch.de> (raw)
In-Reply-To: <20140328073718.GA12762@feng-snb>
Feng Tang wrote:
> On Fri, Mar 28, 2014 at 08:17:16AM +0100, Ingo Molnar wrote:
>> * Feng Tang <feng.tang@intel.com> wrote:
>> - or the kernel should have a quirk to reliably disable it. Why
>> should we crash or misbehave if a driver is built into the
>> kernel?
>
> I thought about this before, HPET doesn't have PCI ID like stuff,
HPET does have the PCI vendor ID in the first register.
> only thing I can think of to identify them may be the CPU family/ID.
The HPET is implemented by some actual chip, and that chip also has lots
of PCI devices. (In the case of a SoC, the CPU ID would work, too).
Regards,
Clemens
next prev parent reply other threads:[~2014-03-28 8:08 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-28 2:55 [PATCH v2] x86: hpet: Don't default CONFIG_HPET_TIMER to be y for X86_64 Feng Tang
2014-03-28 7:17 ` Ingo Molnar
2014-03-28 7:37 ` Feng Tang
2014-03-28 8:08 ` Clemens Ladisch [this message]
2014-03-28 8:11 ` Ingo Molnar
2014-03-28 8:20 ` Feng Tang
2014-04-15 7:44 ` Feng Tang
2014-04-15 9:00 ` Ingo Molnar
2014-04-15 9:55 ` Feng Tang
2014-04-15 10:42 ` Ingo Molnar
2014-04-15 14:12 ` Feng Tang
2014-04-16 6:51 ` Ingo Molnar
2014-04-18 7:18 ` Feng Tang
2014-04-18 7:49 ` [RFC PATCH] x86, hpet: Add quirk to disable HPET for baytrail platform Feng Tang
2014-04-18 8:15 ` Ingo Molnar
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