On Wed, Aug 26, 2020 at 01:16:28PM +0200, Thomas Gleixner wrote: > This is the second version of providing a base to support device MSI (non > PCI based) and on top of that support for IMS (Interrupt Message Storm) > based devices in a halfways architecture independent way. > > The first version can be found here: > > https://lore.kernel.org/r/20200821002424.119492231@xxxxxxxxxxxxx > > It's still a mixed bag of bug fixes, cleanups and general improvements > which are worthwhile independent of device MSI. > > There are quite a bunch of issues to solve: > > - X86 does not use the device::msi_domain pointer for historical reasons > and due to XEN, which makes it impossible to create an architecture > agnostic device MSI infrastructure. > > - X86 has it's own msi_alloc_info data type which is pointlessly > different from the generic version and does not allow to share code. > > - The logic of composing MSI messages in an hierarchy is busted at the > core level and of course some (x86) drivers depend on that. > > - A few minor shortcomings as usual > > This series addresses that in several steps: For all IOMMU changes: Acked-by: Joerg Roedel <jroedel@xxxxxxx>
