Avi Kivity wrote: > Anders wrote: > >>>> Why not enable SIGIO on stdio input, like the rest of the fd handling in >>>> qemu? >>>> >>>> >>> Thats a possibility, but I think we've now agreed that doing select() with >>> a timeout is cleaner and possibly half a cent faster. >>> >>> >> Since I can only follow this list as a hobby, I managed to miss that >> discussion. Can somebody point me to the relevant thread, as I would find >> it interesting? >> >> >> > > This was off-list. The point is, that with the iothread we don't need > to rely on signals at all (qemu needs signals to break out of the > emulation loop, kvm without iothread needs them to exit guest mode, but > the iothread can simply sit in select() waiting for an fd to become > active (or for aio to complete via a signal). >
Why did we ever need sigtimedwait() anyway? Even if we were select()ing within the VCPU context, we should break out of the select() on signal delivery. Regards, Anthony Liguori ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
