Re: [PATCH v5 22/32] x86, swiotlb: DMA support for memory encryption

On 5/16/2017 9:27 AM, Borislav Petkov wrote:

On Tue, Apr 18, 2017 at 04:20:10PM -0500, Tom Lendacky wrote:

quoted

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.

Use a verb in the subject:

Subject: x86, swiotlb: Add memory encryption support

or similar.

Will do.

Thanks,
Tom

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