From: Roland McGrath <roland@redhat.com>
To: benh@kernel.crashing.org
Cc: linuxppc-dev@ozlabs.org
Subject: Re: how to check for "optional" ppc chip features (MSR_BE)
Date: Sun, 4 May 2008 16:12:07 -0700 (PDT) [thread overview]
Message-ID: <20080504231207.8377E26FA08@magilla.localdomain> (raw)
In-Reply-To: Benjamin Herrenschmidt's message of Monday, 5 May 2008 07:45:49 +1000 <1209937549.21644.2.camel@pasglop>
> Oh and classic pitfall: If you define a new feature bit, make sure
> CPU_FTRS_POSSIBLE is updated to contain it in cputable.h
Yeah, all that stuff I could figure out as needed. What I really meant
was, where is the big official table of which chips behave which ways that
you base all code that on? Actually, I don't really care as long as you
all are happy to be responsible for figuring out what matters. With the
patch I posted to use MSR_BE, I took Kumar Gala's word as gospel that all
the chips on which we use MSR_SE also have MSR_BE. If that's not right,
then I hope you'd like to pick a feature bit, populate the tables, etc.,
and fix the definition of arch_has_block_step() as appropriate.
Thanks,
Roland
next prev parent reply other threads:[~2008-05-04 23:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-02 1:21 how to check for "optional" ppc chip features (MSR_BE) Roland McGrath
2008-05-02 3:48 ` Kumar Gala
2008-05-04 21:45 ` Benjamin Herrenschmidt
2008-05-04 23:12 ` Roland McGrath [this message]
2008-05-05 0:49 ` Benjamin Herrenschmidt
2008-05-13 11:55 ` Paul Mackerras
2008-05-13 13:47 ` Kumar Gala
2008-05-13 19:33 ` Roland McGrath
2008-06-11 16:05 ` Kumar Gala
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