linux-kernel - [RFC PATCH 0/2] powerpc: CPU cache op cleanup

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Date:	Mon, 14 Nov 2011 21:32:09 -0500
From:	Kyle Moffett <Kyle.D.Moffett@...ing.com>
To:	<linuxppc-dev@...ts.ozlabs.org>
Cc:	<linux-kernel@...r.kernel.org>, <benh@...nel.crashing.org>,
	<galak@...nel.crashing.org>, <scottwood@...escale.com>,
	<B04825@...escale.com>, <paul.gortmaker@...driver.com>
Subject: [RFC PATCH 0/2] powerpc: CPU cache op cleanup

Ok, so I have a work-in-progress patch for cleaning up the CPU cache
handling, and I'd like some comments on the approach.

It's not really split up, and it's kind of a huge patch because it
tries to tackle a lot of things at once.  Unfortunately, I'm having a
hard time finding good clean places to break things apart.

Furthermore, I know 100% that it is not complete on PPC32 yet, and it
almost certainly does not build on PPC64 yet either.

These are the only files in arch/powerpc/ which have known-incorrect
references to L1_CACHE_* variables:
  arch/powerpc/lib/copy_32.S
  arch/powerpc/kernel/misc_32.S

Unfortunately, I've been staring at PPC asm for long enough that I
have a migraine headache and I'm going to have to stop here for now.
If somebody else wants to tackle fixing up the 32-bit copy_page() and
__copy_tofrom_user() routines it would be highly appreciated.

Cheers,
Kyle Moffett

--
Curious about my work on the Debian powerpcspe port?
I'm keeping a blog here: http://pureperl.blogspot.com/

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