Ingo Molnar b6fd6f2673 x86, mm: limit MAXMEM on 64-bit ... on 64-bit x86 the physical memory limit is controlled by the sparsemem bits - which are 44 bits right now. But MAXMEM (the max pfn number e820 parsing will allow to enter our sizing routines) is set to 0x00003fffffffffff, i.e. 46 bits - that's too large because it overlaps into the vmalloc range. So couple MAXMEM to MAX_PHYSMEM_BITS, and add a comment that the maximum of MAX_PHYSMEM_BITS is 45 bits. Signed-off-by: Ingo Molnar <mingo@elte.hu>		2008-12-16 19:31:52 +01:00
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asm	x86, mm: limit MAXMEM on 64-bit	2008-12-16 19:31:52 +01:00