>>> On 25.04.13 at 18:42, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote: > On Thu, Apr 25, 2013 at 10:40:57AM +0100, Jan Beulich wrote: >> Recent hypervisors will actually >> only consume this to issue a warning if not matching what gets >> read from the corresponding BAR. Earlier hypervisors used this >> instead of reading the BAR. > > Note that pci_resource_start() gives you a CPU address, and what you > read from the BAR is a PCI bus address. These are not in the same > address space and can't be directly compared. I assume the > hypervisors take that into account and do the appropriate > conversions? I suppose Xen has never been run on a system where the two would differ, and it's quite likely that it would break on such systems. Question is - are there any x86-based systems where this is the case? Jan -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
