Thread (39 messages) 39 messages, 7 authors, 2020-11-27

Re: [PATCH v6 00/17] follow_pfn and other iomap races

From: Jason Gunthorpe <jgg@ziepe.ca>
Date: 2020-11-27 13:12:39
Also in: dri-devel, kvm, linux-media, linux-mm, linux-samsung-soc, lkml

On Thu, Nov 19, 2020 at 03:41:29PM +0100, Daniel Vetter wrote:
I feel like this is ready for some wider soaking. Since the remaining bits
are all kinda connnected probably simplest if it all goes through -mm.
Did you figure out a sumbission plan for this stuff?
Daniel Vetter (17):
  drm/exynos: Stop using frame_vector helpers
  drm/exynos: Use FOLL_LONGTERM for g2d cmdlists
  misc/habana: Stop using frame_vector helpers
  misc/habana: Use FOLL_LONGTERM for userptr
  mm/frame-vector: Use FOLL_LONGTERM
  media: videobuf2: Move frame_vector into media subsystem
At the very least it would be good to get those in right away.
  mm: Add unsafe_follow_pfn
  media/videbuf1|2: Mark follow_pfn usage as unsafe
  vfio/type1: Mark follow_pfn as unsafe
I'm surprised nobody from VFIO has remarked on this, I think thety
won't like it
  mm: Close race in generic_access_phys
  PCI: Obey iomem restrictions for procfs mmap
  /dev/mem: Only set filp->f_mapping
  resource: Move devmem revoke code to resource framework
  sysfs: Support zapping of binary attr mmaps
  PCI: Revoke mappings like devmem
This sequence seems fairly stand alone, and in good shape as well

My advice is to put the done things on a branch and get Stephen to put
them in linux-next. You can send a PR to Lins. There is very little mm
stuff in here, and cross subsystem stuff works better in git land,
IMHO.

Jason

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