Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: [patch] 2.1.89, 2GB physical memory, CONFIG_MAX_MEMSIZE | Date | 9 Mar 1998 06:18:32 GMT |
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Followup to: <Pine.LNX.3.96.980309032803.23721A-100000@chiara.csoma.elte.hu> By author: MOLNAR Ingo <mingo@chiara.csoma.elte.hu> In newsgroup: linux.dev.kernel > > > On Sat, 7 Mar 1998, Trevor Johnson wrote: > > > > Does there exist a patch for 2.0.33 that will permit the use of > > > 2GB of physical memory? > > > > Ingo Molnar made a patch for 2.1.77 or so. I think it only works with the > > Pentium Pro. [...] > > the patch works on my 2x P5 SMP board also. Here is a new version against > 2.1.89, it removes all those hardcoded constants and adds > CONFIG_MAX_MEMSIZE, max physical memory is settable: > > (Pentium/K5/5x86/6x86) Processor family > [ ] Math emulation > [*] More than 1 gigabyte physical memory > (0x80000000) Max physical memory > > this constant is properly fed into all other kernel places, there should > be no more 0xc0000000 dependencies left. Both 2G/2G and 3G/1G splits have > been sanity booted and i havent had any problems so far. > > [there still seem to be lots of compile-time dependencies on PAGE_OFFSET, > so that making it a config-time option seems to be the right solution. > There would be too much overhead from a run-time setup i think.] >
Perhaps it would be saner to specify this number in megabytes; it could be decimal then.
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