Messages in this thread | | | Subject | Re: non volatile ram disk | From | Erez Doron <> | Date | 21 Jan 2002 15:42:56 +0200 |
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hi
thanks for replying,
I already tried to map an MTD to physical memory, but got an error and an mtd with size 0
dou you know why ?
regards erez
On Mon, 2002-01-21 at 15:41, Peter Wächtler wrote: > 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 > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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