Merge tag 'pull-tcg-plugin-memory-190924-1' of https://gitlab.com/stsquad/qemu into...

Merge tag 'pull-tcg-plugin-memory-190924-1' of https://gitlab.com/stsquad/qemu into staging

TCG plugin memory instrumentation updates

  - deprecate plugins on 32 bit hosts
  - deprecate plugins with TCI
  - extend memory API to save value
  - add check-tcg tests to exercise new memory API
  - fix timer deadlock with non-changing timer
  - add basic block vector plugin to contrib
  - add cflow plugin to contrib
  - extend syscall plugin to dump write memory
  - validate ips plugin arguments meet minimum slice value

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* tag 'pull-tcg-plugin-memory-190924-1' of https://gitlab.com/stsquad/qemu:
  contrib/plugins: avoid hanging program
  plugins: add option to dump write argument to syscall plugin
  plugins: add plugin API to read guest memory
  contrib/plugins: Add a plugin to generate basic block vectors
  util/timer: avoid deadlock when shutting down
  tests/tcg: add a system test to check memory instrumentation
  tests/tcg: ensure s390x-softmmu output redirected
  tests/tcg: only read/write 64 bit words on 64 bit systems
  tests/tcg: clean up output of memory system test
  tests/tcg/multiarch: add test for plugin memory access
  tests/tcg/plugins/mem: add option to print memory accesses
  tests/tcg: allow to check output of plugins
  tests/tcg: add mechanism to run specific tests with plugins
  plugins: extend API to get latest memory value accessed
  plugins: save value during memory accesses
  contrib/plugins: control flow plugin
  deprecation: don't enable TCG plugins by default with TCI
  deprecation: don't enable TCG plugins by default on 32 bit hosts

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>