On Mon, May 28, 2012 at 02:48:10PM +0200, Jan Kiszka wrote: > On 2012-05-28 14:44, Michael S. Tsirkin wrote: > > On Fri, May 25, 2012 at 05:35:03PM +1000, Alexey Kardashevskiy wrote: > >> Some adapters (like NEC PCI USB controller) do not flush their config > >> on a sioftware reset and remember DMA config, etc. > >> > >> If we use such an adapter with QEMU, then crash QEMU (stop it with > >> ctrl-A ctrl-X), and try to use it in QEMU again, it may start working > >> immediately with previous config when pci_enable_device() is called > >> on that PCI function. > >> > >> To eliminate such effect, some quirk should be called. The proposed > >> pci_fixup_final does its job well for mentioned NEC PCI USB but not > >> sure if it is 100% correct. > >> > >> Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx> > > > > Won't current kvm device assignment be affected by this? > > Would be surprising if not. > > > If yes need to address that not just vfio. > > A reason to solve this at PCI level? > > Jan > Sure, and I think this is what Benjamin Herren was suggesting. I just wanted to add another reason. -- MST -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
