Messages in this thread |  | | | Date | Mon, 9 Mar 1998 17:22:24 +0100 (CET) | | From | Geert Uytterhoeven <> | | Subject | Re: 2GB physical memory on an Intel/Linux box |
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On Mon, 9 Mar 1998, David Woodhouse wrote: > edo@eosys.com said: > > Does there exist a patch for 2.0.33 that will permit the use of > > 2GB of physical memory? We have been able to get ~768MB so far. > > While I found a discussion of this issue in the Linux-Kernel > > mailing list archives of last July, there was only a hint of a patch. > > I don't know of such a patch, but it should be possible to use the extra memory > as swap space, even if it's not usable directly. This is also useful for people > with broken motherboards where the L2 cache doesn't cache more than the first > 64/512 Mb of RAM, making the remainder unusable as general-purpose memory. > > There was a driver at one point which offered the extra physical memory as a > block device, which could then be used as swap. I can't remember where the > original was, but there's one included as a simple test driver for my MTD > subsystem.
On Linux/m68k (Amiga), we have the z2ram block device, which allows to use the slow 16 bit Zorro II RAM as swapspace.
Greetings,
Geert
-- Geert Uytterhoeven Geert.Uytterhoeven@cs.kuleuven.ac.be Wavelets, Linux/{m68k~Amiga,PPC~CHRP} http://www.cs.kuleuven.ac.be/~geert/ Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium
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