Re: [RFC PATCH v4 19/28] swiotlb: Add warnings for use of bounce buffers with SME

From	Borislav Petkov <bp@alien8.de>
Newsgroups	linux.kernel
Subject	Re: [RFC PATCH v4 19/28] swiotlb: Add warnings for use of bounce buffers with SME
Date	2017-03-01 12:50 +0100
Message-ID	<tgaVz-2rn-7@gated-at.bofh.it> (permalink)
References	<tbyvy-1iO-79@gated-at.bofh.it> <tbTgD-6tv-29@gated-at.bofh.it> <tfxKx-vQ-9@gated-at.bofh.it> <tgaVz-2rn-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Tue, Feb 28, 2017 at 05:19:51PM -0600, Tom Lendacky wrote:
> Device drivers don't supply set_dma_mask() since that is part of the
> dma_map_ops structure. The fm10k_pf.c file function is unrelated to this
> (it's part of an internal driver structure). The dma_map_ops structure
> is setup by the arch or an iommu.

That was certainly a brainfart, sorry.

Joerg explained to me on IRC how the whole dma_map_ops handling is
supposed to be happening.

Thanks.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Re: [RFC PATCH v4 19/28] swiotlb: Add warnings for use of bounce  buffers with SME Borislav Petkov <bp@alien8.de> - 2017-02-27 19:00 +0100
  Re: [RFC PATCH v4 19/28] swiotlb: Add warnings for use of bounce  buffers with SME Borislav Petkov <bp@alien8.de> - 2017-03-01 12:50 +0100

csiph-web