> On 02/10/2012 01:26 AM, Paul Brook wrote: > > The reason we have this is because there are bits of code that rely on > > polling. IIRC slirp and the floppy DMA engine were the main culprits. > > qemu_calculate_timeout is an ugly hack to poll at least once a second, > > allowing the guest to make forward progress when we miss an event. > > At least the floppy DMA engine is fine with it, it uses idle bottom > halves (which are a hack and could be replaced by timers, but that's not > relevant now).
I thought idle bottom halves were one of the things that made this timout necessary. How else are they going to get run? Paul
