Re: [PATCH] x86: hpet: Don't default CONFIG_HPET_TIMER to be y for X86_64

[Andy Lutomirski]

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
> 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/