[all-commits] [llvm/llvm-project] 01472d: [NFC][asan] Update shadow mapping comments for AAr...

[Thurston Dang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 01472d8e357caa10964241ab50b3449014d1be12
      https://github.com/llvm/llvm-project/commit/01472d8e357caa10964241ab50b3449014d1be12
  Author: Thurston Dang <thurston at google.com>
  Date:   2025-08-06 (Wed, 06 Aug 2025)

  Changed paths:
    M compiler-rt/lib/asan/asan_mapping.h

  Log Message:
  -----------
  [NFC][asan] Update shadow mapping comments for AArch64 non-Android Linux (#152412)

This adds commentary to explain why ASan does not work for AArch64
non-Android Linux with 39-bit and 42-bit VMAs (e.g.,
https://github.com/llvm/llvm-project/issues/145259).

Additionally, it updates the 42-bit VMA shadow map comment, which has
been outdated for the last 10 years
(18b2258c92df93c83bc7fce94c20baff3c06e2c6 changed 39-bit and 42-bit to
use the same offset), and adds a comment for the 48-bit VMA shadow map.



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