linux-kernel - Re: [PATCH v11 0/3] Enhance IOMMU default DMA mode build options

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Message-ID: <YMB4tCrkZv1b44qM@8bytes.org>
Date:   Wed, 9 Jun 2021 10:15:48 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     John Garry <john.garry@...wei.com>
Cc:     will@...nel.org, dwmw2@...radead.org, baolu.lu@...ux.intel.com,
        robin.murphy@....com, linux-kernel@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linuxarm@...wei.com,
        thunder.leizhen@...wei.com, chenxiang66@...ilicon.com,
        rdunlap@...radead.org
Subject: Re: [PATCH v11 0/3] Enhance IOMMU default DMA mode build options

Hi John,

On Tue, Jun 08, 2021 at 09:18:25PM +0800, John Garry wrote:
> Zhen Lei (3):
>   iommu: Enhance IOMMU default DMA mode build options
>   iommu/vt-d: Add support for IOMMU default DMA mode build options
>   iommu/amd: Add support for IOMMU default DMA mode build options

So I like the idea, but can we go a step further and get (mostly) rid of
the driver-specific setup code for lazy/non-lazy mode? This can happen
in the dma-iommu code and the drivers only need to keep the support for
their legacy command line options.

Regards,

	Joerg