switching linux kernels

[Dan Malek]

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

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/