Gerd Hoffmann wrote: > On 02/08/11 00:26, Alexander Graf wrote: >> The new ISA infrastructure checks for potential irq sharing bugs on >> interrupt lines, because usually irq lines on isa can't be shared. >> >> The PREP spec however mandates that the irq lines for both IDE ports >> are shared and according to Aurelien this also used to work just fine. >> >> So let's add a way to enable this sharing again, so we don't introduce >> unnecessary regressions over older versions of Qemu. > > Had a patch for that, got shoot down for reasons I don't remember, > attached for reference. It basically allows IRQ sharing in case the > two devices sharing the IRQ are of the same kind. In that case you > usually have a single guest driver handling both devices and IRQ > sharing works most of the time. > > I don't mind much which approach we take ...
I'm very indifferent myself :). This is not an issue we should waste too much time/effort on. Alex
