1. 17 Dec, 2018 1 commit
    • Lendacky, Thomas's avatar
      dma-direct: do not include SME mask in the DMA supported check · c92a54cf
      Lendacky, Thomas authored
      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: c1d0af1a ("kernel/dma/direct: take DMA offset into account in dma_direct_supported")
      Signed-off-by: default avatarTom Lendacky <thomas.lendacky@amd.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      c92a54cf
  2. 14 Dec, 2018 20 commits
  3. 13 Dec, 2018 13 commits
  4. 12 Dec, 2018 6 commits