linux-kernel - Re: arm-smmu 5000000.iommu: Cannot accommodate DMA offset for IOMMU page tables

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Date:   Thu, 15 Oct 2020 11:17:37 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Christoph Hellwig <hch@....de>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Poonam Aggrwal <poonam.aggrwal@....com>,
        Rob Herring <robh@...nel.org>, Joerg Roedel <jroedel@...e.de>,
        Arnd Bergmann <arnd@...db.de>,
        Richard Weinberger <richard@....at>,
        Naresh Kamboju <naresh.kamboju@...aro.org>,
        "Z.Q. Hou" <Zhiqiang.Hou@....com>,
        open list <linux-kernel@...r.kernel.org>,
        lkft-triage@...ts.linaro.org, Will Deacon <will@...nel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        linux-mtd@...ts.infradead.org,
        Jim Quinlan <james.quinlan@...adcom.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Suram Suram <suram@....com>, masonccyang@...c.com.tw,
        Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>
Subject: Re: arm-smmu 5000000.iommu: Cannot accommodate DMA offset for IOMMU
 page tables

On 10/15/20 12:48 AM, Christoph Hellwig wrote:
> On Sun, Oct 11, 2020 at 05:53:37AM +1100, Stephen Rothwell wrote:
>> Hi Naresh,
>>
>> Just adding Christoph and Jim to cc]
> 
> Well, a Cc doesn't help on its own.  Can you send an actual bug
> report including the setup, warnings and error messages, a bisection
> result and the usual suspects?

I don't believe there is a DMA regression for you to look at, this was
solved a long time ago thanks to Robin, here is the beginning of the thread:

https://lore.kernel.org/lkml/CA+G9fYvuq58q+GsWnzni0sKSHbubuQz-UaK3TASX26V_a7yBVw@mail.gmail.com/
-- 
Florian