From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org, paulus@samba.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/mm: setting mmaped page cache property through device tree
Date: Fri, 04 Dec 2009 13:38:51 +1100 [thread overview]
Message-ID: <1259894331.2076.1245.camel@pasglop> (raw)
In-Reply-To: <E389CC83-307F-4A7D-B90B-CD928A1D1D1D@kernel.crashing.org>
On Tue, 2009-12-01 at 15:35 +0100, Segher Boessenkool wrote:
> So make the memory known to the kernel, just tell the kernel not to
> use it. If it's normal system RAM, just put it in the "memory" node
> and do a memreserve on it (or do something in your platform code); if
> it's some other memory, do a device driver for it, map it there.
Right, if he's going to map it cachable he shouldn't bother with using
mem= or crap like that. And /dev/mem should just work.
Cheers,
Ben
next prev parent reply other threads:[~2009-12-04 2:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-01 10:30 [PATCH] powerpc/mm: setting mmaped page cache property through device tree Li Yang
2009-12-01 10:58 ` Benjamin Herrenschmidt
2009-12-01 11:34 ` Li Yang
2009-12-01 14:35 ` Segher Boessenkool
2009-12-02 6:25 ` Li Yang
2009-12-03 4:15 ` Segher Boessenkool
2009-12-03 6:15 ` Li Yang
2009-12-04 2:38 ` Benjamin Herrenschmidt [this message]
2009-12-04 2:37 ` Benjamin Herrenschmidt
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