Caching in the MPC107, linux 2.6
trini at kernel.crashing.org
Tue Mar 16 07:38:49 EST 2004
On Mon, Mar 15, 2004 at 08:03:16PM +0000, Adrian Cox wrote:
> On Sat, 2004-03-13 at 17:07, Tom Rini wrote:
> > Instead do:
> > BEGIN_FTR_SECTION
> > ori r8,r8,_PAGE_COHERENT
> > END_FTR_SECTION_IFSET(CPU_FTR_745X_MPC107)
> > And have the code that sets SPEC7450 also check for an MPC107.
> Something like this?
Actually, I was thinking that having an extra nop there on the !SMP &&
!(745x && MPC107) case wouldn't hurt much / at all, and having this
feature bit be done unconditionally. But in cpu_setup_6xx.S we would
compare the host bridge vendor / device ID to that of an mpc107. Or am
I not thinking right, and doing that comparison at that time would be a
bad idea? If so, I can live with it being an unconditional option, iff
it's only required when MPC10X_STORE_GATHERING is enabled.
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