On 16/04/17 09:53 AM, Dan Williams wrote: > ZONE_DEVICE allows you to redirect via get_dev_pagemap() to retrieve > context about the physical address in question. I'm thinking you can > hang bus address translation data off of that structure. This seems > vaguely similar to what HMM is doing. Thanks! I didn't realize you had the infrastructure to look up a device from a pfn/page. That would really come in handy for us. Logan
