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From: Paul Mackerras <paulus@samba.org>
To: Andrew Morton <akpm@osdl.org>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] fix gcc4 warning in asm-ppc/time.h
Date: Fri, 5 Aug 2005 08:19:04 +1000	[thread overview]
Message-ID: <17138.37976.125149.720836@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20050803221517.21b54d7e.akpm@osdl.org>

Andrew Morton writes:

> Do we really want to do this?  The above implies that mfspr(SPRN_PVR) will
> return the same value across the entire uptime of the kernel.  Is that
> true?

Yes, the PVR is the processor version register, and it would be quite
disturbing if the silicon changed underneath us. :)

> Why is this function paying with const anyway?

It seemed like a good idea at the time? :)

Paul.

  parent reply	other threads:[~2005-08-04 22:19 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-08-02  9:55 [PATCH] fix gcc4 warning in asm-ppc/time.h Christoph Hellwig
2005-08-04  5:15 ` Andrew Morton
2005-08-04  5:54   ` Gabriel Paubert
2005-08-04  9:46     ` Benjamin Herrenschmidt
2005-08-04 10:19       ` Gabriel Paubert
2005-08-04 22:19   ` Paul Mackerras [this message]
2005-08-04  5:17 ` Andrew Morton

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