linux-kernel - Re: [PATCH 2/7] [RFC] add bluegene entry to cputable

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Message-ID: <BANLkTimEqYnTn10rV2=gfDkXfgxX+2OSCg@mail.gmail.com>
Date:	Thu, 19 May 2011 20:08:46 -0500
From:	Eric Van Hensbergen <ericvh@...il.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	bg-linux@...ts.anl-external.org
Subject: Re: [PATCH 2/7] [RFC] add bluegene entry to cputable

On Thu, May 19, 2011 at 7:35 PM, Benjamin Herrenschmidt
<benh@...nel.crashing.org> wrote:
> On Wed, 2011-05-18 at 16:24 -0500, Eric Van Hensbergen wrote:
>> +             .dcache_bsize           = 32,
>> +             .cpu_setup              = __setup_cpu_460gt,
>                                            ^^^^^^^^^^^^^^^^^^
> Are you sure ?
>

That surprised me too, I figured it must have been a close enough
match (at least in the 2.6.29.1 time frame which is where I'm trying
to merge the BG/P patches up from.  The kittyhawk patches don't even
use this, so its possible we could just remove it.


_GLOBAL(__setup_cpu_460ex)
_GLOBAL(__setup_cpu_460gt)
        mflr    r4
        bl      __init_fpu_44x
        bl      __fixup_440A_mcheck
        mtlr    r4
        blr

Looks like the 460 setup invokes a bunch of 440 calls!  Would you
prefer I setup my own entry point (setup_cpu_bgp or setup_cpu_450)
which makes the same calls?

     -eric
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