linux-kernel - Re: [PATCH v2 00/10] iommu/vt-d: Bounce buffer for untrusted devices

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Message-ID: <20190328161134.GA27879@infradead.org>
Date:   Thu, 28 Mar 2019 09:11:34 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Lu Baolu <baolu.lu@...ux.intel.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Joerg Roedel <joro@...tes.org>, ashok.raj@...el.com,
        jacob.jun.pan@...el.com, alan.cox@...el.com, kevin.tian@...el.com,
        mika.westerberg@...ux.intel.com, pengfei.xu@...el.com,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 00/10] iommu/vt-d: Bounce buffer for untrusted devices

On Thu, Mar 28, 2019 at 02:33:04PM +0800, Lu Baolu wrote:
> For the swiotlb APIs, I am thinking about keeping current APIs untouched
> and adding below new ones for bounce page.

In the lon run I'd like tow avoid duplicate APIs, especially as the
current low-level swiotlb APIs only two callers.  But please go ahead
with the new APIs for now, I will try to see if we can do something
on top later.