Jens Axboe wrote:
My explanation was for the block layer part of course, I'm hoping (did not check) that the iommu has similar sane defaults.
Part of the problem is that the iommu doesn't know as much as the block layer.
But this still really wants a unification of the dma restrictions...
Strongly agreed. ISTR JamesB had some concrete thoughts in that direction, but they never made it beyond an IRC channel and/or a few emails.
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