Lendacky, Thomas 13e554fedd dma-direct: do not include SME mask in the DMA supported check ... commit c92a54cfa0 upstream. The dma_direct_supported() function intends to check the DMA mask against specific values. However, the phys_to_dma() function includes the SME encryption mask, which defeats the intended purpose of the check. This results in drivers that support less than 48-bit DMA (SME encryption mask is bit 47) from being able to set the DMA mask successfully when SME is active, which results in the driver failing to initialize. Change the function used to check the mask from phys_to_dma() to __phys_to_dma() so that the SME encryption mask is not part of the check. Fixes: c1d0af1a1d ("kernel/dma/direct: take DMA offset into account in dma_direct_supported") Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-01-13 09:51:05 +01:00
..
coherent.c
contiguous.c	dma-mapping: fix panic caused by passing empty cma command line argument	2018-11-13 11:08:17 -08:00
debug.c
direct.c	dma-direct: do not include SME mask in the DMA supported check	2019-01-13 09:51:05 +01:00
Kconfig	dma-mapping: add the missing ARCH_HAS_SYNC_DMA_FOR_CPU_ALL declaration	2018-09-25 15:11:58 -07:00
Makefile
mapping.c
noncoherent.c
swiotlb.c	swiotlb: clean up reporting	2018-07-25 13:33:05 +02:00
virt.c