Re: [HMM 09/15] mm/hmm/devmem: device memory hotplug using ZONE_DEVICE v5

On 05/24/2017 10:20 AM, Jérôme Glisse wrote: [...] +/* + * hmm_devmem_fault_range() - migrate back a virtual range of memory + * + * @devmem: hmm_devmem struct use to track and manage the ZONE_DEVICE memory + * @vma: virtual memory area containing the range to be migrated + * @ops: migration call

[HMM 09/15] mm/hmm/devmem: device memory hotplug using ZONE_DEVICE v5

This introduce a simple struct and associated helpers for device driver to use when hotpluging un-addressable device memory as ZONE_DEVICE. It will find a unuse physical address range and trigger memory hotplug for it which allocates and initialize struct page for the device memory. Changed since