linux-kernel - Re: [PATCH 3/8] iommu/vt-d: Remove IOVA handling code from non-dma

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Message-ID: <46bf21e2-bb3e-1c1e-8dae-2c5bd8c5274f@linux.intel.com>
Date:   Fri, 20 Mar 2020 15:06:24 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Tom Murphy <murphyt7@....ie>, iommu@...ts.linux-foundation.org
Cc:     baolu.lu@...ux.intel.com,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Clark <robdclark@...il.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Gerald Schaefer <gerald.schaefer@...ibm.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>,
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        Julien Grall <julien.grall@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
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        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
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Subject: Re: [PATCH 3/8] iommu/vt-d: Remove IOVA handling code from
 non-dma_ops path

On 2020/3/20 14:30, Tom Murphy wrote:
> Could we merge patch 1-3 from this series? it just cleans up weird
> code and merging these patches will cover some of the work needed to
> move the intel iommu driver to the dma-iommu api in the future.

Can you please take a look at this patch series?

https://lkml.org/lkml/2020/3/13/1162

It probably makes this series easier.

Best regards,
baolu

> 
> On Sat, 21 Dec 2019 at 07:04, Tom Murphy<murphyt7@....ie>  wrote:
>> Remove all IOVA handling code from the non-dma_ops path in the intel
>> iommu driver.
>>
>> There's no need for the non-dma_ops path to keep track of IOVAs. The
>> whole point of the non-dma_ops path is that it allows the IOVAs to be
>> handled separately. The IOVA handling code removed in this patch is
>> pointless.
>>
>> Signed-off-by: Tom Murphy<murphyt7@....ie>