Re: [PATCH v6 3/3] mm/gup: disallow FOLL_LONGTERM GUP-fast writing to file-backed mappings
From: Jason Gunthorpe <jgg@nvidia.com>
Date: 2023-05-02 13:11:36
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On Tue, May 02, 2023 at 03:04:27PM +0200, Christian Borntraeger wrote: \> > We can reintroduce a flag to permit exceptions if this is really broken, are you
quoted
able to test? I don't have an s390 sat around :)Matt (Rosato on cc) probably can. In the end, it would mean having <memoryBacking> <source type="file"/> </memoryBacking>
This s390 code is the least of the problems, after this series VFIO won't startup at all with this configuration. Jason