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From: Ralf Baechle <ralf@linux-mips.org>
To: Juan Quintela <quintela@mandrakesoft.com>
Cc: Andrew Clausen <clausen@melbourne.sgi.com>,
	Linux-MIPS <linux-mips@linux-mips.org>
Subject: Re: weirdness in bootmem_init(), arch/mips64/kernel/setup.c
Date: Tue, 18 Feb 2003 11:33:14 +0100	[thread overview]
Message-ID: <20030218113314.A25047@linux-mips.org> (raw)
In-Reply-To: <86ptpplw8k.fsf@trasno.mitica>; from quintela@mandrakesoft.com on Tue, Feb 18, 2003 at 11:27:23AM +0100

On Tue, Feb 18, 2003 at 11:27:23AM +0100, Juan Quintela wrote:

> andrew> That test looks like it will always succeed... and it looks like the
> andrew> author wanted it to be a sanity check.
> 
> andrew> Why all this business with PFN_UP and PFN_DOWN?  (They are bit
> andrew> shifts... PFN_UP shifts left, PFN_DOWN shifts right)
> 
> Not completely sure, but I think that it is related with the weird
> discontig memory that Origins (and I think other MIPS machines) have.

It's not used on Origins.

  Ralf

  reply	other threads:[~2003-02-18 10:33 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-02-18  6:54 weirdness in bootmem_init(), arch/mips64/kernel/setup.c Andrew Clausen
2003-02-18 10:27 ` Juan Quintela
2003-02-18 10:33   ` Ralf Baechle [this message]
2003-02-18 10:42 ` Ralf Baechle
2003-02-18 22:29   ` Andrew Clausen

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