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[scudo] Check if MADV_DONTNEED zeroes memory
authorVitaly Buka <vitalybuka@google.com>
Thu, 22 Apr 2021 08:45:36 +0000 (01:45 -0700)
committerVitaly Buka <vitalybuka@google.com>
Thu, 22 Apr 2021 17:40:18 +0000 (10:40 -0700)
commitd423509b8036c29bbf94dab192d12097555ce0f8
treed8b6e39cfbdc20a28f5214d700e66b4e622d5792tree | snapshot
parente25082961cb5aaafc817cb55593cf0ea8d3c4c22commit | diff
[scudo] Check if MADV_DONTNEED zeroes memory

QEMU just ignores MADV_DONTNEED
https://github.com/qemu/qemu/blob/b1cffefa1b163bce9aebc3416f562c1d3886eeaa/linux-user/syscall.c#L11941

Depends on D100998.

Differential Revision: https://reviews.llvm.org/D101031
compiler-rt/lib/scudo/standalone/linux.cpp diff | blob | history
Domain: System / Toolchain;