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[PowerPC][msan] Update msan to handle changed memory layouts in newer kernels

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In more recent Linux kernels (including those with 47 bit VMAs) the layout of
virtual memory for powerpc64 changed causing the memory sanitizer to not
work properly. This patch adjusts a bit mask in the memory sanitizer to work
on the newer kernels while continuing to work on the older ones as well.

This is the non-runtime part of the patch and finishes it. ref: r317802

Tested on several 4.x and 3.x kernel releases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318045 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Seurer 2017-11-13 15:43:19 +00:00
parent c95900468d
commit 71f0575da1
1 changed files with 1 additions and 1 deletions
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2
lib/Transforms/Instrumentation/MemorySanitizer.cpp
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@ -290,7 +290,7 @@ static const MemoryMapParams Linux_MIPS64_MemoryMapParams = {
// ppc64 Linux
static const MemoryMapParams Linux_PowerPC64_MemoryMapParams = {
0x200000000000, // AndMask
0xE00000000000, // AndMask
0x100000000000, // XorMask
0x080000000000, // ShadowBase
0x1C0000000000, // OriginBase