linux-kernel - Re: [PATCH 1/3] iommu/dma: Clean up Kconfig

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Message-ID: <YxJINWLzESn/Rwhp@arm.com>
Date:   Fri, 2 Sep 2022 19:15:17 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Robin Murphy <robin.murphy@....com>
Cc:     joro@...tes.org, will@...nel.org, jean-philippe@...aro.org,
        inki.dae@...sung.com, sw0312.kim@...sung.com,
        kyungmin.park@...sung.com, tglx@...utronix.de, maz@...nel.org,
        alex.williamson@...hat.com, cohuck@...hat.com,
        iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        linux-acpi@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH 1/3] iommu/dma: Clean up Kconfig

On Tue, Aug 16, 2022 at 06:28:03PM +0100, Robin Murphy wrote:
> Although iommu-dma is a per-architecture chonce, that is currently
> implemented in a rather haphazard way. Selecting from the arch Kconfig
> was the original logical approach, but is complicated by having to
> manage dependencies; conversely, selecting from drivers ends up hiding
> the architecture dependency *too* well. Instead, let's just have it
> enable itself automatically when IOMMU API support is enabled for the
> relevant architectures. It can't get much clearer than that.
> 
> Signed-off-by: Robin Murphy <robin.murphy@....com>
> ---
>  arch/arm64/Kconfig          | 1 -

For this change:

Acked-by: Catalin Marinas <catalin.marinas@....com>