From: Ralf Baechle <ralf@linux-mips.org>
To: Nils Larson <nlarson@Crossroads.com>
Subject: Re: How to add more memory?
Date: Thu, 22 Jan 2004 01:28:27 +0100 [thread overview]
Message-ID: <20040122002827.GA10415@linux-mips.org> (raw)
In-Reply-To: <CFD808D1D39ACB47ABFF586D484CC52EADE212@hqmailnode1.commstor.crossroads.com>
On Wed, Jan 21, 2004 at 03:58:24PM -0600, Nils Larson wrote:
> We currently have a mips platform running Linux with 256MB of
> RAM starting at 0x8000_0000. We would like to add an additional
> 1GB of RAM, maybe starting at 0x4000_0000, that would be used
> for user apps (user virtual memory). The memory map is:
> 0x8000_0000 - 256MB RAM
> 0xA000_0000 - uncached version of the same 256MB
> 0xB000_0000 - PCI memory windows.
> This is a diskless setup booting from a ramdisk.
> So, the (sort of newbie) questions are:
> 1. How do we tell Linux to use the new memory?
> 2. Is this feasible?
> 3. Is there a better way to add more memory?
> We need more space for user data.
I wrote the highmem code for Linux/MIPS. It's currently limited
to processor configurations that don't suffer from virtual aliases but
that limitation can be removed; depending of your application and hardware
that may be anywhere from trivial to hard. What is your processor?
Ralf
next prev parent reply other threads:[~2004-01-22 0:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-21 21:58 How to add more memory? Nils Larson
2004-01-21 21:58 ` Nils Larson
2004-01-21 22:37 ` Jun Sun
2004-01-22 0:28 ` Ralf Baechle [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-01-23 15:14 Nils Larson
2004-01-23 15:14 ` Nils Larson
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