On Tue, May 16, 2023, Yan Zhao wrote: > hi Sean > > Do you think it's necessary to double check that struct page pointers > are also contiguous? No, the virtual address space should be irrelevant. The only way it would be problematic is if something in dma_map_page() expected to be able to access the entire chunk of memory by getting the virtual address of only the first page, but I can't imagine that code is reading or writing memory, let alone doing so across a huge range of memory. > And do you like to also include a fix as below, which is to remove the > warning in vfio_device_container_unpin_pages() when npage is 0? > > @ -169,7 +173,8 @@ static int gvt_pin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn, > *page = base_page; > return 0; > err: > - gvt_unpin_guest_page(vgpu, gfn, npage * PAGE_SIZE); > + if (npage) > + gvt_unpin_guest_page(vgpu, gfn, npage * PAGE_SIZE); > return ret; > } Sure. Want to give your SoB? I'll write a changelog. Thanks again!
