Re: [PATCH] Athlon bug stomper. Pls apply.

VDA (VDA@port.imtp.ilyichevsk.odessa.ua)
Thu, 20 Sep 2001 12:03:35 +0300

Hello Arjan,
Wednesday, September 19, 2001, 9:55:00 PM, you wrote:
>> AFAIK noone has even tested it yet to see what it does to performance! Eg
>> it might slow down memory access so that athlon-optimized memcopy is now
>> slower than non-athlon-optimized memcopy. And if it turns out to be the
>> case, we might as well just use the non-athlon-optimized memcopy instead
>> of twiddling undocumented northbridge bits...

AvdV> Ok but that part is simple: run
AvdV> http://www.fenrus.demon.nl/athlon.c

Well, this tester is really useful.
Some bugs though:
* fast_copy_page() does fsave instead of frstor
* do we need femms before frstor?
My PII at work does not even execute femms...

-- 
Best regards, VDA
mailto:VDA@port.imtp.ilyichevsk.odessa.ua
http://port.imtp.ilyichevsk.odessa.ua/vda/




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