From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Alan Modra <amodra@gmail.com>
Cc: linuxppc-dev@ozlabs.org, Anton Blanchard <anton@samba.org>
Subject: Re: [PATCH] powerpc: Optimise per cpu accesses on 64bit
Date: Wed, 02 Jun 2010 09:50:21 +1000 [thread overview]
Message-ID: <1275436221.1931.725.camel@pasglop> (raw)
In-Reply-To: <20100601224026.GG5631@bubble.grove.modra.org>
On Wed, 2010-06-02 at 08:10 +0930, Alan Modra wrote:
> Not r12. It is used in function prologue and epilogue code. If you
> want a dedicated gpr I think you'll need to use (and lose) one of the
> non-volatile regs.
Which would probably not be a big deal...
Cheers,
Ben.
prev parent reply other threads:[~2010-06-01 23:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-01 4:45 [PATCH] powerpc: Optimise per cpu accesses on 64bit Anton Blanchard
2010-06-01 7:05 ` Benjamin Herrenschmidt
2010-06-01 22:40 ` Alan Modra
2010-06-01 23:50 ` Benjamin Herrenschmidt [this message]
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