linux-kernel - Re: [PATCH] swiotlb: Allow swiotlb to live at pre-defined address

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Message-ID: <c53de6bf8718f05c8e1bfcb06c8dea99c1c693ca.camel@infradead.org>
Date:   Thu, 26 Mar 2020 17:16:12 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     Alexander Graf <graf@...zon.com>, Christoph Hellwig <hch@....de>
Cc:     iommu@...ts.linux-foundation.org,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        x86@...nel.org, Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, Mark Rutland <mark.rutland@....com>,
        dwmw@...zon.com, benh@...zon.com,
        Jan Kiszka <jan.kiszka@...mens.com>, alcioa@...zon.com,
        aggh@...zon.com, aagch@...zon.com, dhr@...zon.com
Subject: Re: [PATCH] swiotlb: Allow swiotlb to live at pre-defined address

On Thu, 2020-03-26 at 18:11 +0100, Alexander Graf wrote:
> I'm with you on that sentiment, but in the environment I'm currently 
> looking at, we have neither DT nor ACPI: The kernel gets purely 
> configured via kernel command line. For other unenumerable artifacts on 
> the system, such as virtio-mmio platform devices, that works well enough 
> and also basically "hacks a kernel parameter" to specify the system layout.

Well... maybe it should also feed in a DT for those too?


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