Merge tag 'pull-lu-20230901' of https://gitlab.com/rth7680/qemu into staging

linux-user: Rewrite and improve /proc/pid/maps
linux-user: Fix shmdt and improve shm region tracking
linux-user: Remove ELF_START_MMAP and image_info.start_mmap

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* tag 'pull-lu-20230901' of https://gitlab.com/rth7680/qemu:
  linux-user: Track shm regions with an interval tree
  linux-user: Fix shmdt
  linux-user: Use WITH_MMAP_LOCK_GUARD in target_{shmat,shmdt}
  linux-user: Move shmat and shmdt implementations to mmap.c
  linux-user: Remove ELF_START_MMAP and image_info.start_mmap
  linux-user: Emulate the Anonymous: keyword in /proc/self/smaps
  linux-user: Show heap address in /proc/pid/maps
  linux-user: Adjust brk for load_bias
  linux-user: Use walk_memory_regions for open_self_maps
  util/selfmap: Use dev_t and ino_t in MapInfo
  linux-user: Emulate /proc/cpuinfo for Alpha
  linux-user: Emulate /proc/cpuinfo on aarch64 and arm
  linux-user: Split out cpu/target_proc.h

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

diff --cc linux-user/syscall.c
Simple merge