From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: Anton Blanchard <anton@samba.org>, linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] powerpc: Use lwarx hint bit in spinlocks
Date: Wed, 10 Feb 2010 13:41:41 -0500 [thread overview]
Message-ID: <20100210184141.GC16178@zod.rchland.ibm.com> (raw)
In-Reply-To: <3941DE04-15C3-4E44-9278-923E874FE23E@kernel.crashing.org>
On Wed, Feb 10, 2010 at 09:40:34AM -0600, Kumar Gala wrote:
>> In the off chance that someone actually does an SMP 44x, I think the hint bit
>> here would just be ignored (I could test possibly if we want to verify).
>> However, I thought the FSL parts didn't like toggling the reserved bits and
>> those already are SMP in some cases.
>>
>> Kumar?
>>
>> josh
>
>Yeah, I need to test this on some older SMP parts that didn't treated reserved bits being set in the opcode as ignored but illegal.
It looks like Anton just did a v2 of the patch targeted at ppc64 instead.
josh
prev parent reply other threads:[~2010-02-10 18:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-10 2:50 [PATCH] powerpc: Use lwarx hint bit in spinlocks Anton Blanchard
2010-02-10 3:19 ` Josh Boyer
2010-02-10 15:40 ` Kumar Gala
2010-02-10 18:41 ` Josh Boyer [this message]
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