Subject: Re: Please Revert newlock2
To: None <email@example.com>
From: Matt Thomas <firstname.lastname@example.org>
Date: 02/18/2007 18:40:04
Bucky Katz wrote:
> "Thomas E. Spanjaard" <email@example.com> writes:
>> Bucky Katz wrote:
>>> Thor Lancelot Simon <firstname.lastname@example.org> writes:
>>>> 2) Either cause them to perform acceptably for your application, or else
>>>> endeavor to get M:N back in a supported state for uniprocessors.
>>> It has to be the later. The context switch overhead of 1:1 on ARM will
>>> cause a severe performance degradation.
>> Doesn't OMAP support the v4/v5 hyped fast address space switching?
> I dunno. I don't recognize it by that name and can't find any term
> like that in the processor TRM.
> If you mean (and I suspect you do) The "Fast Context Switch Extention"
> FCSE, then yes the OMAP processors we are currently using support it.
Except that FCSE is useless for NetBSD. It reduces each process to a 64MB
(25 bit address space).