tree 09b1b3e331d91ff94b84cf9b56ffe7aa16870211
parent 1c4eb93aa72b008984f13823c5d8a245a00c5c23
author Joshua Peraza <jperaza@chromium.org> 1634079303 -0700
committer Copybara-Service <copybara-worker@google.com> 1634160255 -0700

linux,arm: support memory tagging

64-bit ARM's Top-Byte-Ignore enables features such as memory tagging.
https://www.kernel.org/doc/html/latest/arm64/tagged-address-abi.html

Android 11 will start using memory tagging on some devices.
https://source.android.com/devices/tech/debug/tagged-pointers

Crashpad needs to remove the tags from pointers before comparing to
addresses or using with system calls.

Bug: crashpad:364
Change-Id: I38e7f89c7280f89bc4166baebfca8a6967ec4e09
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3078500
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
GitOrigin-RevId: 0a8985cd20d3d287a4a425c091448e926896513a