Subject: Re: audio problems with -current/GCC4?
To: Jason Thorpe <firstname.lastname@example.org>
From: Timo Schoeler <email@example.com>
Date: 07/11/2006 19:00:24
thus Jason Thorpe spake:
> On Jul 11, 2006, at 7:11 AM, Garrett D'Amore wrote:
>> AFAIK, MMX and SSE have _nothing_ to do with floating point. It may be
>> true that these are _also_ unsafe in the kernel, for the same reasons
>> that floating point is unsafe (i.e. they aren't saved on context
>> switches) -- maybe someone familiar with the i386 port can verify?
> Their registers overlap the FPU.
hm, putting my PowerPC hat aside, IIRC this is obsolete since SSE2 .
with SSE4 intel seems to have the same efficiency as a G4 has since 1999 ;)
> They are also unsafe to use.
as is hyperthreading (cache snooping between cores).
 -- http://en.wikipedia.org/wiki/SSE2