From: Segher Boessenkool <segher@kernel•crashing.org>
To: Benjamin Herrenschmidt <benh@kernel•crashing.org>
Cc: Tejun Heo <htejun@gmail•com>,
linuxppc-dev@lists•ozlabs.org, Christoph Lameter <cl@gentwo•org>
Subject: Re: power and percpu: Could we move the paca into the percpu area?
Date: Thu, 12 Jun 2014 17:15:13 -0500 [thread overview]
Message-ID: <20140612221513.GB28378@gate.crashing.org> (raw)
In-Reply-To: <1402610228.14780.84.camel@pasglop>
On Fri, Jun 13, 2014 at 07:57:08AM +1000, Benjamin Herrenschmidt wrote:
> On Thu, 2014-06-12 at 07:26 -0500, Segher Boessenkool wrote:
> > But, indeed, it does look like GCC doesn't use it. It seems to me
> > that
> > some ABI forbade userland (or non-libraries or whatever) from using
> > it.
> > I'll see what I can find out.
>
> I can still use -ffixed-cr5 for safety no ?
Yes, definitely, and in fact you have to if GCC changes to not have cr5
fixed by default (which may or may not happen). It will be good
documentation in either case :-)
Segher
next prev parent reply other threads:[~2014-06-12 22:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-11 19:37 power and percpu: Could we move the paca into the percpu area? Christoph Lameter
2014-06-11 20:22 ` Benjamin Herrenschmidt
2014-06-11 21:03 ` Gabriel Paubert
2014-06-12 12:26 ` Segher Boessenkool
2014-06-12 21:57 ` Benjamin Herrenschmidt
2014-06-12 22:15 ` Segher Boessenkool [this message]
2014-06-13 11:55 ` Gabriel Paubert
2014-06-13 14:16 ` Segher Boessenkool
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