* Gregory Haskins (gregory.haskins@xxxxxxxxx) wrote: > Arnd Bergmann wrote: > > pci_iomap could look at the bus device that the PCI function sits on. > > If it detects a PCI bridge that has a certain property (config space > > setting, vendor/device ID, ...), it assumes that the device itself > > will be emulated and it should set the address flag for IO_COND. > > > > This implies that all pass-through devices need to be on a different > > PCI bridge from the emulated devices, which should be fairly > > straightforward to enforce. Hmm, this gets to the grey area of the ABI. I think this would mean an upgrade of the host would suddenly break when the mgmt tool does: (qemu) pci_add pci_addr=0:6 host host=01:10.0 > Thats actually a pretty good idea. > > Chris, is that issue with the non ioread/iowrite access of a mangled > pointer still an issue here? I would think so, but I am a bit fuzzy on > whether there is still an issue of non-wrapped MMIO ever occuring. Arnd was saying it's a bug for other reasons, so perhaps it would work out fine. thanks, -chris -- 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
