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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-16 19:23:36 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-16 19:31:52 +0100 |
| commit | b6fd6f26733e864fba2ea3eb1d716e23d2e66f3a (patch) | |
| tree | 6b76b47a3366d502cbb8a740c15e9d2f46aea645 /arch/x86/kernel/cpu/intel_cacheinfo.c | |
| parent | cfc319833b5b359bf3bce99564dbac00af7925ac (diff) | |
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>
Diffstat (limited to 'arch/x86/kernel/cpu/intel_cacheinfo.c')
0 files changed, 0 insertions, 0 deletions