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Subject[patch for-5.8 0/4] dma-direct: dma_direct_alloc_pages() fixes for AMD SEV
While debugging recently reported issues concerning DMA allocation
practices when CONFIG_AMD_MEM_ENCRYPT is enabled, some curiosities arose
when looking at dma_direct_alloc_pages() behavior.

Fix these up. These are likely all stable material, so proposing for 5.8.
---
kernel/dma/direct.c | 42 ++++++++++++++++++++++++++++++++----------
1 file changed, 32 insertions(+), 10 deletions(-)

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