Bjorn, Yijing, I've just realized that patch c167caf8d174 (PCI/MSI: Remove useless bus->msi assignment) completely breaks MSI on arm64 when using the new MSI stacked domain: This patch relies on architectures to implement either pcibios_msi_controller() or arch_setup_msi_irq(). It turns out that with stacked domains, none of this is actually necessary, as long as you can access to the msi_controller. And everything was fine until this patch came around (and managed to test on a system where the PCI devices are not directly attached to the root bus). Of course, everything now breaks, as we cannot get to the MSI controller (which contains the domain we allocate the MSIs from). In short, this patch breaks an important feature on which arm64 relies, and I believe this patch should be reverted ASAP. Thanks, M. -- Jazz is not dead. It just smells funny... -- 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
