[PATCH v2 0/3] target/arm mte fixes

[Richard Henderson]

In addition to re-instating the "is tag checking enabled" test
in gen_mte_checkN, add a fix for a second bug in mprotect.

I have verified that the 5.10 kernel, running in system mode,
allows setting PROT_MTE with mprotect.


r~


Supercedes: 20210402053728.265173-1-richard.henderson@linaro.org
("target/arm: Fix unaligned mte checks")


Richard Henderson (3):
  target/arm: Check PAGE_WRITE_ORG for MTE writeability
  target/arm: Fix unaligned mte checks
  accel/tcg: Preserve PAGE_ANON when changing page permissions

 target/arm/helper-a64.h           |   3 +-
 target/arm/internals.h            |  13 +--
 target/arm/translate-a64.h        |   2 +-
 tests/tcg/aarch64/mte.h           |   3 +-
 accel/tcg/translate-all.c         |   9 +-
 target/arm/mte_helper.c           | 171 ++++++++++++------------------
 target/arm/sve_helper.c           |  96 ++++++-----------
 target/arm/translate-a64.c        |  31 +++---
 target/arm/translate-sve.c        |   9 +-
 tests/tcg/aarch64/mte-5.c         |  44 ++++++++
 tests/tcg/aarch64/mte-6.c         |  43 ++++++++
 tests/tcg/aarch64/Makefile.target |   2 +-
 12 files changed, 222 insertions(+), 204 deletions(-)
 create mode 100644 tests/tcg/aarch64/mte-5.c
 create mode 100644 tests/tcg/aarch64/mte-6.c

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2.25.1