iommu/iova: Make dma_32bit_pfn implicit

Now that the cached node optimisation can apply to all allocations, the
couple of users which were playing tricks with dma_32bit_pfn in order to
benefit from it can stop doing so. Conversely, there is also no need for
all the other users to explicitly calculate a 'real' 32-bit PFN, when
init_iova_domain() can happily do that itself from the page granularity.

CC: Thierry Reding <[email protected]>
CC: Jonathan Hunter <[email protected]>
CC: David Airlie <[email protected]>
CC: Sudeep Dutt <[email protected]>
CC: Ashutosh Dixit <[email protected]>
Signed-off-by: Zhen Lei <[email protected]>
Tested-by: Ard Biesheuvel <[email protected]>
Tested-by: Zhen Lei <[email protected]>
Tested-by: Nate Watterson <[email protected]>
[rm: use iova_shift(), rewrote commit message]
Signed-off-by: Robin Murphy <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>

0 files changed, 0 insertions, 0 deletions