Re: [PATCH hmm v2 0/5] Adjust hmm_range_fault() API

[Jason Gunthorpe]

On Fri, May 01, 2020 at 03:20:43PM -0300, Jason Gunthorpe wrote:
> From: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
> 
> The API is a bit complicated for the uses we actually have, and
> disucssions for simplifying have come up a number of times.
> 
> This small series removes the customizable pfn format and simplifies the
> return code of hmm_range_fault()
> 
> All the drivers are adjusted to process in the simplified format.
> I would appreciated tested-by's for the two drivers, thanks!
> 
> v2:
>  - Move call chain to commit message
>  - Fix typo of HMM_PFN_REQ_FAULT
>  - Move nouveau_hmm_convert_pfn() to nouveau_svm.c
>  - Add acks and tested-bys
> v1: https://lore.kernel.org/r/0-v1-4eb72686de3c+5062-hmm_no_flags_jgg@xxxxxxxxxxxx
> 
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: John Hubbard <jhubbard@xxxxxxxxxx>
> Cc: JÃrÃme Glisse <jglisse@xxxxxxxxxx>
> Cc: Ben Skeggs <bskeggs@xxxxxxxxxx>
> To: Ralph Campbell <rcampbell@xxxxxxxxxx>
> Cc: nouveau@xxxxxxxxxxxxxxxxxxxxx
> Cc: Niranjana Vishwanathapura <niranjana.vishwanathapura@xxxxxxxxx>
> Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: "Kuehling, Felix" <Felix.Kuehling@xxxxxxx>
> Cc: Alex Deucher <alexander.deucher@xxxxxxx>
> Cc: "Christian KÃnig" <christian.koenig@xxxxxxx>
> Cc: "David (ChunMing) Zhou" <David1.Zhou@xxxxxxx>
> Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: "Yang, Philip" <Philip.Yang@xxxxxxx>
> To: linux-mm@xxxxxxxxx
> 
> Jason Gunthorpe (5):
>   mm/hmm: make CONFIG_DEVICE_PRIVATE into a select
>   mm/hmm: make hmm_range_fault return 0 or -1
>   drm/amdgpu: remove dead code after hmm_range_fault()
>   mm/hmm: remove HMM_PFN_SPECIAL
>   mm/hmm: remove the customizable pfn format from hmm_range_fault

Applied to hmm.git, thanks

Jason