On Mon, 2017-04-03 at 09:51:44 UTC, Alistair Popple wrote: > Nvlink2 supports address translation services (ATS) allowing devices > to request address translations from an mmu known as the nest MMU > which is setup to walk the CPU page tables. > > To access this functionality certain firmware calls are required to > setup and manage hardware context tables in the nvlink processing unit > (NPU). The NPU also manages forwarding of TLB invalidates (known as > address translation shootdowns/ATSDs) to attached devices. > > This patch exports several methods to allow device drivers to register > a process id (PASID/PID) in the hardware tables and to receive > notification of when a device should stop issuing address translation > requests (ATRs). It also adds a fault handler to allow device drivers > to demand fault pages in. > > Signed-off-by: Alistair Popple <alist...@popple.id.au>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/1ab66d1fbadad86b1f4a9c7857e193 cheers
