Subject: Re: switching linux kernels

From: Dan Malek <[email-masked]>
Date: Wed, 27 Sep 2000 01:59:09 -0400

Graham Stoney wrote:

> Turning off copy-back has a global performance hit, so it's a pretty nasty
> workaround for cache coherency bugs in a single driver.

Yep, you should really fix the driver.....

> ....... does it use insx/outsx &
> friends from asm/io.h, or does it dereference pointers directly, forgetting
> the eieio's?

Please don't use in/out macros on PowerPC....especially on 8xx their
underlying address arithmetic will likely break more things that it
fixes.
Use memory mapped I/O (readb/writeb, etc.) and ioremap().....

	-- Dan

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