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[for-8.1?,00/24] linux-user: mmap range fixes

Message ID 20230630132159.376995-1-richard.henderson@linaro.org
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Series linux-user: mmap range fixes | expand

Message

Richard Henderson June 30, 2023, 1:21 p.m. UTC 
Supercedes: 20230629080835.71371-1-richard.henderson@linaro.org

While the above should make its way back into 8.0.N, we can do better
than simply avoiding the last page for automatically placed pages.
After this patch set, nothing in linux-user/mmap.c uses "end".

In the process, this fixes a couple of inefficiencies, where we
were probing pages one by one instead of walking the interval tree.

This also passes MJT's hppa fenics-basix test case.


r~


Richard Henderson (24):
  linux-user: Use assert in mmap_fork_start
  linux-user: Fix formatting of mmap.c
  linux-user/strace: Expand struct flags to hold a mask
  linux-user: Split TARGET_MAP_* out of syscall_defs.h
  linux-user: Split TARGET_PROT_* out of syscall_defs.h
  linux-user: Populate more bits in mmap_flags_tbl
  accel/tcg: Introduce page_check_range_empty
  bsd-user: Use page_check_range_empty for MAP_EXCL
  linux-user: Implement MAP_FIXED_NOREPLACE
  linux-user: Split out target_to_host_prot
  linux-user: Widen target_mmap offset argument to off_t
  linux-user: Rewrite target_mprotect
  linux-user: Rewrite mmap_frag
  accel/tcg: Introduce page_find_range_empty
  bsd-user: Use page_find_range_empty for mmap_find_vma_reserved
  linux-user: Use page_find_range_empty for mmap_find_vma_reserved
  linux-user: Use 'last' instead of 'end' in target_mmap
  linux-user: Rewrite mmap_reserve
  linux-user: Rename mmap_reserve to mmap_reserve_or_unmap
  linux-user: Simplify target_munmap
  accel/tcg: Accept more page flags in page_check_range
  accel/tcg: Return bool from page_check_range
  linux-user: Remove can_passthrough_madvise
  linux-user: Simplify target_madvise

 bsd-user/qemu.h                  |   2 +-
 include/exec/cpu-all.h           |  39 +-
 linux-user/aarch64/target_mman.h |   3 +
 linux-user/alpha/target_mman.h   |  13 +
 linux-user/generic/target_mman.h |  58 +++
 linux-user/hppa/target_mman.h    |  10 +
 linux-user/mips/target_mman.h    |  13 +
 linux-user/mips64/target_mman.h  |   2 +-
 linux-user/ppc/target_mman.h     |   3 +
 linux-user/qemu.h                |   2 +-
 linux-user/sparc/target_mman.h   |   4 +
 linux-user/syscall_defs.h        |  96 +----
 linux-user/user-mmap.h           |   2 +-
 linux-user/xtensa/target_mman.h  |  13 +
 accel/tcg/user-exec.c            |  72 +++-
 bsd-user/mmap.c                  |  49 +--
 linux-user/mmap.c                | 702 ++++++++++++++++---------------
 linux-user/strace.c              |  61 +--
 linux-user/syscall.c             |  22 +-
 target/hppa/op_helper.c          |   2 +-
 target/riscv/vector_helper.c     |   2 +-
 target/sparc/ldst_helper.c       |   2 +-
 accel/tcg/ldst_atomicity.c.inc   |   4 +-
 23 files changed, 638 insertions(+), 538 deletions(-)