On 2011-05-31 15:47, Anthony Liguori wrote: > On 05/29/2011 04:50 PM, Andreas Färber wrote: >> BeOS and Haiku don't define SIGIO. When undefined, it won't arrive >> and doesn't need to be blocked. >> >> Signed-off-by: Andreas Färber<andreas.faer...@web.de> > > Anything to do with signal masks is never a trivial patch BTW... > > But I actually think explicit handling of SIGIO is unneeded. I think > this is a hold over from the pre-I/O thread days where we selectively > set SIGIO on certain file descriptors to make sure that when an IO fd > became readable, we received a signal to break out of the KVM emulation > loop. > > Can the folks on CC confirm/deny? > > I can't see any use of SIGIO in the current source tree.
At least qemu-timer.c uses SIGIO in HPET mode. That only applies to Linux hosts, though. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux
