swiotlb: add arch hook to force mapping
Impact: generalize the sw-IOTLB range checks Some architectures require special rules to determine whether a range needs mapping or not. This adds a weak function for architectures to override. Signed-off-by:Ian Campbell <ian.campbell@citrix.com> Signed-off-by:
Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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