[PATCH 0/3] coroutine: use QEMU_DEFINE_STATIC_CO_TLS()

[Stefan Hajnoczi]

The coroutine implementation uses __thread variables internally. Compiler
optimizations may cache Thread-Local Storage values across
qemu_coroutine_yield(), leading to stale values being used after the coroutine
is re-entered from another thread.

Kevin pointed out that the coroutine implementation itself is vulnerable to
this problem. As a follow-up to my coroutine TLS patch series I'm sending these
patches to convert __thread variables to the new "qemu/coroutine-tls.h" macros
so they are safe.

Stefan Hajnoczi (3):
  coroutine-ucontext: use QEMU_DEFINE_STATIC_CO_TLS()
  coroutine: use QEMU_DEFINE_STATIC_CO_TLS()
  coroutine-win32: use QEMU_DEFINE_STATIC_CO_TLS()

 util/coroutine-ucontext.c | 38 +++++++++++++++++++++++-------------
 util/coroutine-win32.c    | 18 ++++++++++++-----
 util/qemu-coroutine.c     | 41 +++++++++++++++++++++++----------------
 3 files changed, 61 insertions(+), 36 deletions(-)

-- 
2.35.1