This is a refresh of the user-only patch set from March.

I do not attempt to implement any part of a kernel abi wrt mmap
and/or mprotect.  Instead, it uses a x-tagged-pages property to
assume that all anonymous pages have tags.

The tests added are disabled by default, but do pass if you have
binutils 2.32 installed.


r~


Based-on: <20191011134744.2477-1-richard.henderson@linaro.org>
("target/arm: Implement ARMv8.5-MemTag, system mode")

Based-on: <20190803210803.5701-1-richard.henderson@linaro.org>
("target/arm: Implement ARMv8.5-BTI for linux-user")

Complete tree: https://github.com/rth7680/qemu/tree/tgt-arm-mte-user


Richard Henderson (3):
  tcg: Introduce target-specific page data for user-only
  target/arm: Add allocation tag storage for user mode
  tests/tcg/aarch64: Add mte smoke tests

 include/exec/cpu-all.h            | 10 ++++++--
 target/arm/cpu.h                  |  4 ++++
 accel/tcg/translate-all.c         | 28 ++++++++++++++++++++++
 linux-user/mmap.c                 |  8 ++++++-
 linux-user/syscall.c              |  4 ++--
 target/arm/cpu64.c                | 20 ++++++++++++++++
 target/arm/mte_helper.c           | 35 +++++++++++++++++++++++++--
 tests/tcg/aarch64/mte-1.c         | 27 +++++++++++++++++++++
 tests/tcg/aarch64/mte-2.c         | 39 +++++++++++++++++++++++++++++++
 tests/tcg/aarch64/Makefile.target |  5 ++++
 10 files changed, 173 insertions(+), 7 deletions(-)
 create mode 100644 tests/tcg/aarch64/mte-1.c
 create mode 100644 tests/tcg/aarch64/mte-2.c

-- 
2.17.1