Messages in this thread | | | Date | Fri, 28 Mar 2014 08:17:16 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH v2] x86: hpet: Don't default CONFIG_HPET_TIMER to be y for X86_64 |
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* Feng Tang <feng.tang@intel.com> 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.
NAK!
If the HPET is unreliable on a specific platform then any of the following solutions would address the problem (in order of preference):
- the hardware should not expose it. Why waste silicon on something that does not work?
- or the firmware should not expose it. Why expose something that does not work?
- 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?
tweaking a default is _NOT_ a solution for an unreliable hpet.
Thanks,
Ingo
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