[PATCH v5 0/6] [committed] Memory tagging support

[Richard Earnshaw]

Final version, as committed to master.

The following minor tweaks were made:
 - Move some preprocessor definitions from malloc/malloc.h to include/malloc.h
 - Fix a comment in arena.c
 - Fix non-GNU style in sysdeps/aarch64/libc-mtag.h
 - updated one commit message to indicate version of linux that supports MTE.
 - sprinkle some Reviewed-by where appropriate.

With thanks to Szabolcs and Siddhesh for prompt reviews.

R.

Richard Earnshaw (6):
  config: Allow memory tagging to be enabled when configuring glibc
  elf: Add a tunable to control use of tagged memory
  malloc: Basic support for memory tagging in the malloc() family
  linux: Add compatibility definitions to sys/prctl.h for MTE
  aarch64: Add sysv specific enabling code for memory tagging
  aarch64: Add aarch64-specific files for memory tagging support

 INSTALL                                       |  14 +
 config.h.in                                   |   3 +
 config.make.in                                |   2 +
 configure                                     |  22 ++
 configure.ac                                  |  15 +
 elf/dl-tunables.list                          |   9 +
 include/malloc.h                              |   8 +
 malloc/arena.c                                |  59 ++-
 malloc/hooks.c                                |  79 ++--
 malloc/malloc.c                               | 336 ++++++++++++++----
 manual/install.texi                           |  13 +
 manual/tunables.texi                          |  35 ++
 sysdeps/aarch64/Makefile                      |   5 +
 sysdeps/aarch64/__mtag_address_get_tag.S      |  32 ++
 sysdeps/aarch64/__mtag_memset_tag.S           |  53 +++
 sysdeps/aarch64/__mtag_new_tag.S              |  37 ++
 sysdeps/aarch64/__mtag_tag_region.S           |  51 +++
 sysdeps/aarch64/libc-mtag.h                   |  57 +++
 sysdeps/generic/libc-mtag.h                   |  52 +++
 sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h  |   1 +
 sysdeps/unix/sysv/linux/aarch64/bits/mman.h   |   1 +
 .../unix/sysv/linux/aarch64/cpu-features.c    |  30 ++
 .../unix/sysv/linux/aarch64/cpu-features.h    |   2 +
 sysdeps/unix/sysv/linux/sys/prctl.h           |  18 +
 24 files changed, 837 insertions(+), 97 deletions(-)
 create mode 100644 sysdeps/aarch64/__mtag_address_get_tag.S
 create mode 100644 sysdeps/aarch64/__mtag_memset_tag.S
 create mode 100644 sysdeps/aarch64/__mtag_new_tag.S
 create mode 100644 sysdeps/aarch64/__mtag_tag_region.S
 create mode 100644 sysdeps/aarch64/libc-mtag.h
 create mode 100644 sysdeps/generic/libc-mtag.h

-- 
2.29.2