I have a few patches queued up for the next merge window that change the way we allocate PCI resources. They are targeted at x86, but some of the changes will affect other architectures, and it's possible other arches may want to do something similar to the x86-specific part. The LKML posting starts here: http://marc.info/?l=linux-kernel&m=128476278029918&w=2 Here's the general description, and the individual patches have specific examples: When we move PCI devices, we currently allocate space bottom-up, i.e., we look at PCI bus resources in the order we found them, we look at gaps between child resources bottom-up, and we align the new space at the bottom of an available region. ... These patches change Linux to allocate space more like Windows does: 1) The x86 pcibios_align_resource() will choose space from the end of an available area, not the beginning. 2) In the generic allocate_resource() path, we'll look for space between existing children from the top, not from the bottom. 3) When pci_bus_alloc_resource() looks for available space, it will start from the highest window, not the first one we found. This is just FYI; no action required unless you want to do something similar in your pcibios_align_resource(), or you see an issue with the generic changes on your arch. Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
