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authorLinus Torvalds <torvalds@osdl.org>2005-05-18 15:39:33 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-19 07:46:36 -0700
commit49a43876b935c811cfd29d8fe998a6912a1cc5c4 (patch)
treec7d7a187a2125518e655dfeadffd38156239ffc3 /drivers
parent05d3794aa8bd3b2c9f7920a05003c331cdeb75c5 (diff)
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[PATCH] prevent NULL mmap in topdown model
Prevent the topdown allocator from allocating mmap areas all the way down to address zero. We still allow a MAP_FIXED mapping of page 0 (needed for various things, ranging from Wine and DOSEMU to people who want to allow speculative loads off a NULL pointer). Tested by Chris Wright. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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