Re: [PATCH v15 00/11] migrate on fault for device pages

[Jason Gunthorpe]

On Fri, Sep 25, 2026 at 01:23:52PM +0300, Mika Penttilä wrote:
> 
> On 9/25/26 12:07, Christoph Hellwig wrote:
> > Who is going to use this? The series seems to lack an actual user for it.
> 
> Two users:
> 
> For one, existing migrate_vma_setup() callers, unchanged. The series
> reworks migrate_vma_setup() to collect via hmm_range_fault() internally
> (it sets HMM_PFN_REQ_MIGRATE and calls migrate_hmm_range_setup(),
> mm/migrate_device.c). So every in-tree migrate_vma consumer — nouveau,
> amdgpu/amdkfd, drm/xe via drm_pagemap, lib/test_hmm — runs on the new path.

So split the series so you don't add unused interfaces for now?

Jason