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SubjectRe: [PATCH v6 00/17] follow_pfn and other iomap races
On Fri, Nov 27, 2020 at 09:12:25AM -0400, Jason Gunthorpe wrote:
> 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?

I was kinda hoping Andrew would pick it all up.

> > 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

Same here tbh :-)

> > 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

Yeah your split makes sense. I'll reorder them for the next round (which
I'm prepping right now).
> 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,

Yeah could do. Andrew, any preferences?
Daniel Vetter
Software Engineer, Intel Corporation

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