Re: [PATCH v2 04/40] iommu/sva: Add a mm_exit callback for device drivers

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On 05/09/2018 14:23, Auger Eric wrote:
>> + * If the driver intends to share process address spaces, it should pass a valid
>> + * @mm_exit handler. Otherwise @mm_exit can be NULL.
> I don't get case where mm_exit is allowed to be NULL.

Right, this comment is a bit premature. Next version adds a "private
PASID" patch to allocate private address spaces per PASID (modifiable
with map/unmap). That mode doesn't require mm_exit, and I can move the
comment there

Thanks,
Jean



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