x86: introduce max_low_pfn_mapped for 64-bit
authorYinghai Lu <yhlu.kernel@gmail.com>
Fri, 11 Jul 2008 03:38:26 +0000 (20:38 -0700)
committerIngo Molnar <mingo@elte.hu>
Fri, 11 Jul 2008 08:24:04 +0000 (10:24 +0200)
when more than 4g memory is installed, don't map the big hole below 4g.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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