On Fri, Jun 16, 2017 at 01:54:24PM -0500, Tom Lendacky wrote:
> Since DMA addresses will effectively look like 48-bit addresses when the
> memory encryption mask is set, SWIOTLB is needed if the DMA mask of the
> device performing the DMA does not support 48-bits. SWIOTLB will be
> initialized to create decrypted bounce buffers for use by these devices.
>
> Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
> ---
> arch/x86/include/asm/dma-mapping.h | 5 ++-
> arch/x86/include/asm/mem_encrypt.h | 5 +++
> arch/x86/kernel/pci-dma.c | 11 +++++--
> arch/x86/kernel/pci-nommu.c | 2 +
> arch/x86/kernel/pci-swiotlb.c | 15 +++++++++-
> arch/x86/mm/mem_encrypt.c | 22 +++++++++++++++
> include/linux/swiotlb.h | 1 +
> init/main.c | 10 +++++++
> lib/swiotlb.c | 54 +++++++++++++++++++++++++++++++-----
> 9 files changed, 108 insertions(+), 17 deletions(-)
Reviewed-by: Borislav Petkov <bp@xxxxxxx>
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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