[PATCH v2 00/11] linux-user changes to run docker

[YAMAMOTO Takashi]

These patches allowed me to run arm64 and armv7 version of
dind image on amd64.

This patchset includes a few patches marked [!MERGE],
which are not for the upsteam merge. They are included here just to
show the context to reviewers.

You can find my test setup here:
https://github.com/yamt/garbage/tree/master/binfmt-aarch64-install

YAMAMOTO Takashi (11):
  linux-user: handle /proc/self/exe for execve
  linux-user: Fix the execfd case of /proc/self/exe open
  linux-user: dup the execfd on start up
  linux-user: make exec_path realpath
  linux-user: Implement pivot_root
  linux-user: add get_exe_path
  linux-user: simplify is_proc_myself
  linux-user: Implement exec of /proc/$pid/exe of qemu process
  linux-user: Make the qemu detection for /proc/$pid/exe a bit
    conservative
  linux-user: a crude hack for libcontainer (CLONE_PARENT) [!MERGE]
  linux-user: always assume preserve_argv0 for now [!MERGE]

 linux-user/main.c    |  57 ++++++++++++++-
 linux-user/qemu.h    |   2 +
 linux-user/syscall.c | 171 ++++++++++++++++++++++++++++++++++++++++---
 3 files changed, 219 insertions(+), 11 deletions(-)

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