Re: [PATCH v7 04/15] swiotlb: Add restricted DMA pool initialization

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Subject: Re: [PATCH v7 04/15] swiotlb: Add restricted DMA pool initialization
From: Christoph Hellwig <hch@xxxxxx>
Date: Thu, 27 May 2021 15:27:11 +0200
Cc: Claire Chang <tientzu@xxxxxxxxxxxx>, Rob Herring <robh+dt@xxxxxxxxxx>, mpe@xxxxxxxxxxxxxx, Joerg Roedel <joro@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Frank Rowand <frowand.list@xxxxxxxxx>, boris.ostrovsky@xxxxxxxxxx, jgross@xxxxxxxx, Christoph Hellwig <hch@xxxxxx>, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>, benh@xxxxxxxxxxxxxxxxxxx, paulus@xxxxxxxxx, "list@xxxxxxx:IOMMU DRIVERS" <iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx>, sstabellini@xxxxxxxxxx, Robin Murphy <robin.murphy@xxxxxxx>, grant.likely@xxxxxxx, xypron.glpk@xxxxxx, Thierry Reding <treding@xxxxxxxxxx>, mingo@xxxxxxxxxx, bauerman@xxxxxxxxxxxxx, peterz@xxxxxxxxxxxxx, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>, Saravana Kannan <saravanak@xxxxxxxxxx>, "Rafael J . Wysocki" <rafael.j.wysocki@xxxxxxxxx>, heikki.krogerus@xxxxxxxxxxxxxxx, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>, Randy Dunlap <rdunlap@xxxxxxxxxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>, linux-devicetree <devicetree@xxxxxxxxxxxxxxx>, lkml <linux-kernel@xxxxxxxxxxxxxxx>, linuxppc-dev@xxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, Nicolas Boichat <drinkcat@xxxxxxxxxxxx>, Jim Quinlan <james.quinlan@xxxxxxxxxxxx>, Tomasz Figa <tfiga@xxxxxxxxxxxx>, bskeggs@xxxxxxxxxx, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, chris@xxxxxxxxxxxxxxxxxx, Daniel Vetter <daniel@xxxxxxxx>, airlied@xxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, intel-gfx@xxxxxxxxxxxxxxxxxxxxx, jani.nikula@xxxxxxxxxxxxxxx, Jianxiong Gao <jxgao@xxxxxxxxxx>, joonas.lahtinen@xxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, maarten.lankhorst@xxxxxxxxxxxxxxx, matthew.auld@xxxxxxxxx, rodrigo.vivi@xxxxxxxxx, thomas.hellstrom@xxxxxxxxxxxxxxx
In-reply-to: <YKvLDlnns3TWEZ5l@0xbeefdead.lan>
References: <20210518064215.2856977-1-tientzu@chromium.org> <20210518064215.2856977-5-tientzu@chromium.org> <CALiNf2_AWsnGqCnh02ZAGt+B-Ypzs1=-iOG2owm4GZHz2JAc4A@mail.gmail.com> <YKvLDlnns3TWEZ5l@0xbeefdead.lan>
User-agent: Mutt/1.5.17 (2007-11-01)

On Mon, May 24, 2021 at 11:49:34AM -0400, Konrad Rzeszutek Wilk wrote:
> rmem_swiotlb_setup
> 
> ?
> 
> Which is ARM specific and inside the generic code?

I don't think it is arm specific at all.  It is OF specific, but just
about every platform but x86 uses OF.  And I can think of an ACPI version
of this as well.

References:
- [PATCH v7 00/15] Restricted DMA
  - From: Claire Chang
- [PATCH v7 04/15] swiotlb: Add restricted DMA pool initialization
  - From: Claire Chang
- Re: [PATCH v7 04/15] swiotlb: Add restricted DMA pool initialization
  - From: Claire Chang
- Re: [PATCH v7 04/15] swiotlb: Add restricted DMA pool initialization
  - From: Konrad Rzeszutek Wilk

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