xen/gntdev: use mmu_interval_notifier_insert

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gntdev simply wants to monitor a specific VMA for any notifier events,
this can be done straightforwardly using mmu_interval_notifier_insert()
over the VMA's VA range.

The notifier should be attached until the original VMA is destroyed.

It is unclear if any of this is even sane, but at least a lot of duplicate
code is removed.

Link: https://lore.kernel.org/r/20191112202231.3856-15-jgg@ziepe.ca
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

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This commit is contained in:

Jason Gunthorpe 2019-11-12 16:22:31 -04:00

parent a22dd50640

commit d3eeb1d77c

2 changed files with 49 additions and 138 deletions

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8

drivers/xen/gntdev-common.h

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179

drivers/xen/gntdev.c

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