Re: [PATCH v8 00/11] Fix BUG_ON in vfio_iommu_group_notifier()

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On Fri, Apr 08, 2022 at 11:17:47AM -0300, Jason Gunthorpe wrote:
> You might consider using a linear tree instead of the topic branches,
> topics are tricky and I'm not sure it helps a small subsystem so much.
> Conflicts between topics are a PITA for everyone, and it makes
> handling conflicts with rc much harder than it needs to be.

I like the concept of a branch per driver, because with that I can just
exclude that branch from my next-merge when there are issues with it.
Conflicts between branches happen too, but they are quite manageable
when the branches have the same base.

Overall I am thinking of reorganizing the IOMMU tree, but it will likely
not end up to be a single-branch tree, although the number of patches
per cycle _could_ just be carried in a single branch.

> At least I haven't felt a need for topics while running larger trees,
> and would find it stressful to try and squeeze the entire patch flow
> into only 3 weeks out of the 7 week cycle.

Yeah, so it is 4 weeks in an 9 weeks cycle :) The merge window is 2
weeks and not a lot happens. The 2 weeks after are for stabilization and
I usually only pick up fixes. Then come the 4 weeks were new code gets
into the tree. In the last week everything gets testing in linux-next to
be ready for the merge window. I will pickup fixes in that week, of
course.

> In any event, I'd like this on a branch so Alex can pull it too, I
> guess it means Alex has to merge rc3 to VFIO as well?

Sure, I can put these patches in a separate branch for Alex to pull into
the VFIO tree.

Regards,

	Joerg



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