Re: [PATCH] i386 rw_semaphores fix

From: H. Peter Anvin (hpa@zytor.com)
Date: Wed Apr 11 2001 - 13:06:13 EST


Followup to: <E14nJjm-0006X8-00@the-village.bc.nu>
By author: Alan Cox <alan@lxorguk.ukuu.org.uk>
In newsgroup: linux.dev.kernel
> >
> > Yes, and with CMPXCHG handler in the kernel it wouldn't be needed
> > (the other 686 optimizations like memcpy also work on 386)
>
> They would still be needed. The 686 built glibc materially improves performance
> on 686 class machines. That one isnt an interesting problem to solve. Install
> the right software instead.
>

Yes, the big 686 optimization is CMOV, and that one is
ultra-pervasive.

        -hpa

-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
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