On Fri, Feb 06, 2015 at 07:02:25PM +0000, Peter Maydell wrote: > On 6 February 2015 at 18:55, Will Deacon <will.deacon@xxxxxxx> wrote: > > On Wed, Feb 04, 2015 at 03:39:50PM +0000, Andre Przywara wrote: > >> In PCI config space there is an interrupt line field (offset 0x3f), > >> which is used to initially communicate the IRQ line number from > >> firmware to the OS. _Hardware_ should never use this information, > >> as the OS is free to write any information in there. > > > > Is this true even with probe-only? I appreciate that this isn't a BAR, > > but it still feels odd for Linux to write this in that case. > > The hardware (model) shouldn't be doing anything with the value > in this register anyway, so I think this change to kvmtool is > correct regardless of Linux's behaviour. Well, kvmtool is also pretending to be firmware in this case, which is why it passes things like probe-only and PSCI nodes. Will -- 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
