Hello, [this patch series touches a few subsystems; hopefully I got all the right maintainers] Recently, Matthew Wilcox sent out the following mail about PCI slots: http://marc.info/?l=linux-pci&m=119432330418980&w=2 The following patch series is a rough first cut at implementing the ideas he outlined, namely, that PCI slots are physical objects that we care about, independent of their hotplug capabilities. We introduce a struct pci_slot as a first-class citizen, and turn hotplug_slot into a subsidiary structure. A brief glimpse at the potential for cleanup is given, as we modify the existing hotplug drivers and remove the multiple get_address() methods. Certainly more cleanup can be done with this new structure. Additionally, we introduce an ACPI PCI slot driver, which will detect all physical PCI slots in the system (as described by ACPI). De-coupling the notion of a physical slot from its hotplug capability allows users to understand the physical geography of their machines, whether their slots are hotpluggable or not. This patch series builds heavily on Willy's prior work (with a bit of the typical refresh needed when aiming at the moving target of the kernel). The ACPI PCI slot driver is new. I have tested this series on both ia64 (hp rx6600) and x86 (hp dl380g). On ia64, system firmware provides _SUN methods for the PCI slots and we get entries in /sys/bus/pci/slots/. On my x86 machine, firmware didn't seem to provide a _SUN, so we don't get any entries in /sys/bus/pci/slots/, but nothing really bad happens either. ;) Comments/feedback are appreciated. Thanks. /ac - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
