Hi, > >> 2. Why do we bother providing these devices when CONFIG_MIXEMU off? > >> > >> Why would anyone want hda audio devices without a mixer? Why > >> wouldn't anyone who wants hda audio devices also want CONFIG_MIXEMU > >> enabled? > > > > It'll actually work just fine with HDA. The guest figures there is no > > volume control and will fallback to do volume control in software then. > > Net effect is that the audio sample processing to change volume is done > > by the guest instead of mixemu, so you don't actually save cpu time by > > turning off mixemu ... > > I don't doubt it works, I doubt anybody would want the software mixing > done in the guest instead of mixemu so badly that he wants to use a > special device that makes that possible.
Backward compatibility is the only reason. > > I think AC97 has broken volume control with CONFIG_MIXEMU=n, because the > > guest tries to use the non-functional volume controls. > > > > So, yes, for serious sound support you want CONFIG_MIXEMU=y. > > Which brings me back to question 1: why is non-serious sound support the > default? Last attempt to flip the default was vetoed by malc. cheers, Gerd
