Re: [PATCH v2 03/11] mm/gup: migrate PIN_LONGTERM dev coherent pages to system

Alistair Popple
2021-12-09T01:45:36Z

On Thursday, 9 December 2021 12:53:45 AM AEDT Jason Gunthorpe wrote:
> > I think a similar problem exists for device private fault handling as well and
> > it has been on my list of things to fix for a while. I think the solution is to
> > call try_get_page(), except it doesn't work with device pages due to the whole
> > refcount thing. That issue is blocking a fair bit of work now so I've started
> > looking into it.
>
> Where is this?

Nothing posted yet. I've been going through the mailing list and the old
thread[1] to get an understanding of what is left to do. If you have any
suggestions they would be welcome.

[1] https://lore.kernel.org/all/20211014153928.16805-3-alex.sierra@amd.com/