linux-kernel - Re: [PATCH] powerpc 8xx: Fixing issue with CONFIG_PIN

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Date:	Thu, 12 Sep 2013 07:57:26 +0200
From:	leroy christophe <christophe.leroy@....fr>
To:	Scott Wood <scottwood@...escale.com>
CC:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc 8xx: Fixing issue with CONFIG_PIN_TLB


Le 12/09/2013 02:15, Benjamin Herrenschmidt a écrit :
> On Wed, 2013-09-11 at 17:36 -0500, Scott Wood wrote:
>> I wonder why we don't start from entry 31 so we can actually make use of
>> that autodecrement.  What will happen when we load the first normal TLB
>> entry later on?  I don't see any setting of SPRN_MD_CTR after this code,
>> so won't it overwrite entry 30 (the middle 8M) in the CONFIG_PIN_TLB
>> case?
>>
>> Ben, would patches like this be considered bugfixes as far as merging
>> goes, or would they be for next given that it's something that's never
>> really worked right and hasn't been touched in years?
> Since they don't affect anything outside of 8xx, I'm happy to take them
> until around -rc2 or 3. But it's your call really.
>
>
Scott, you're right, I didn't see that other consequence.
I'll come with a more complete patch this afternoon.
Thanks
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