Re: [PATCH 2/8] qemu-thread-posix: cleanup, fix, document QemuEvent

[Richard Henderson]

On 3/3/23 09:19, Paolo Bonzini wrote:
> QemuEvent is currently broken on ARM due to missing memory barriers
> after qatomic_*().  Apart from adding the memory barrier, a closer look
> reveals some unpaired memory barriers too.  Document more clearly what
> is going on, and remove optimizations that I couldn't quite prove to
> be correct.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>   util/qemu-thread-posix.c | 64 ++++++++++++++++++++++++++++------------
>   1 file changed, 45 insertions(+), 19 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~