On Wed, Apr 08, 2020 at 01:59:15PM +0200, Christoph Hellwig wrote:

This is always GFP_KERNEL - for long term mappings with other properties vmap should be used.

PAGE_KERNEL != GFP_KERNEL :-)

• return vm_map_ram(mock->pages, mock->npages, 0, PAGE_KERNEL);

• return vm_map_ram(mock->pages, mock->npages, 0);