Re: Long Format VHPT patches

From: Peter Chubb <>
Date: 2004-08-26 08:46:44
>>>>> "Arun" == Arun Sharma <> writes:

Arun> On 8/25/2004 10:01 AM, Jesse Barnes wrote:
>> On Tuesday, August 24, 2004 7:34 pm, Ian Wienand wrote:
>>> 11-lf-VHPT-kconfig.patch
>>  Given your conclusions in the paper, would it make sense to
>> unconditionally switch to long format VHPT?  It would simplify
>> things a little and maybe avoid some trouble in the future.

Arun> When the super page optimizations are implemented, long format
Arun> might be a more attractive option. Without it, the increased
Arun> cache footprint of the long format pte is not compensated by the
Arun> benefits on the workloads we tried.

I suggest that we do like we did for the large block device patch ---
enable it unconditionally in the -mm and other test series, then flip
back to a config option in mainline.  That way, anyone using 2.6 for a
production kernel gets a choice, and while we're in test phase, the
patch gets a good workout.

Dr Peter Chubb  peterc AT
The technical we do immediately,  the political takes *forever*
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Received on Wed Aug 25 19:25:54 2004

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