On Wed, Sep 20, 2023 at 09:02:22AM -0700, Andrew Morton wrote: > On Wed, 20 Sep 2023 19:32:06 +0530 <ankita@xxxxxxxxxx> wrote: > > > The kernel MM currently handles ECC errors / poison only on memory page > > backed by struct page. As part of [1], the nvgrace-gpu-vfio-pci module > > maps the device memory to user VA (Qemu) using remap_pfn_range without > > being added to the kernel. These pages are not backed by struct page. > > Are you able to identify any other drivers which can (or will) use > this? Or is it likely that this feature will only ever be for > nvgrace-gpu-vfio-pci? I think a future vfio-cxl will have a similar desire at least. Jason
