From: "Peter Wächtler" <pwaechtler@loewe-komp.de>
To: Erez Doron <erez@savan.com>
Cc: linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: non volatile ram disk
Date: Mon, 21 Jan 2002 14:41:42 +0100 [thread overview]
Message-ID: <3C4C1A96.3504174D@loewe-komp.de> (raw)
In-Reply-To: <1011618928.2825.5.camel@hal.savan.com>
Erez Doron schrieb:
>
> hi
>
> I'm looking for a way to make a ramdisk which is not erased on reboot
> this is for use with ipaq/linux.
>
> i tought of booting with mem=32m and map a block device to the rest of
> the 32M ram i have.
>
> the probelm is that giving mem=32m to the kernel will cause the kernel
> to map only the first 32m of physical memory to virtual one, so using
> __pa(ptr) on the top 32m causes a kernel oops.
>
> any idea ?
>
a MTD is the way to go, which uses the "reserved" mem area.
I assume that the RAM is battery backed
next prev parent reply other threads:[~2002-01-21 13:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-21 13:15 Erez Doron
2002-01-21 13:41 ` Peter Wächtler [this message]
2002-01-21 14:10 ` Erez Doron
2002-01-21 15:21 ` Peter Wächtler
2002-01-22 9:39 ` Erez Doron
2002-01-21 13:42 ` Erez Doron
2002-01-21 23:54 ` David Woodhouse
2002-01-22 13:53 ` solved: ( was Re: non volatile ram disk) Erez Doron
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