mbox series

[0/3] target/arm: Implement ARMv8.5-MemTag, user mode

Message ID 20191015163507.12153-1-richard.henderson@linaro.org
Headers show
Series target/arm: Implement ARMv8.5-MemTag, user mode | expand

Message

Richard Henderson Oct. 15, 2019, 4:35 p.m. UTC 
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

Comments

Peter Maydell Dec. 6, 2019, 1:23 p.m. UTC | #1 
On Tue, 15 Oct 2019 at 17:47, Richard Henderson
<richard.henderson@linaro.org> wrote:
>

> 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.


I'm going to skip reviewing this until we have a defined
kernel ABI to compare against.

thanks
-- PMM