tree dabc0f82a9fdd62067b6d22b7d49eaeb4bd1bacf
parent 26749b3201ab05e288fbf78fbc8585dfa2da3218
author David Rientjes <rientjes@google.com> 1591903228 -0700
committer Christoph Hellwig <hch@lst.de> 1592378978 +0200

dma-direct: always align allocation size in dma_direct_alloc_pages()

dma_alloc_contiguous() does size >> PAGE_SHIFT and set_memory_decrypted()
works at page granularity.  It's necessary to page align the allocation
size in dma_direct_alloc_pages() for consistent behavior.

This also fixes an issue when arch_dma_prep_coherent() is called on an
unaligned allocation size for dma_alloc_need_uncached() when
CONFIG_DMA_DIRECT_REMAP is disabled but CONFIG_ARCH_HAS_DMA_SET_UNCACHED
is enabled.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>