Re: [Qemu-devel] [PATCH] char: kick main loop after adding a watch

[Paolo Bonzini]

On 31/03/2017 19:31, Richard W.M. Jones wrote:
> On Fri, Mar 31, 2017 at 06:53:56PM +0200, Paolo Bonzini wrote:
>> glib is expecting QEMU to use g_main_context_acquire around accesses to 
>> GMainContext.  However QEMU is not doing that, instead it is taking its 
>> own mutex.  So we should add g_main_context_acquire and
>> g_main_context_release in the two implementations of 
>> os_host_main_loop_wait; these should undo the effect of Frediano's 
>> glib patch.
> 
> Based on this paragraph, I'm testing the attached patch, and it does
> also appear to solve the hanging serial port problem.

Turn out that it may actually be a glib bug.  Your patch would enable
Frediano's optimizations so it's worth applying anyway.

https://bugzilla.gnome.org/show_bug.cgi?id=761102

Paolo