Received-SPF: pass (google.com: domain of linux-kernel+bounces-199669-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) client-ip=2604:1380:40f1:3f00::1;
Message-ID: <753fd496-ea66-42dd-a607-a879c3cce6b6@oldschoolsolutions.biz>
Date: Mon, 3 Jun 2024 21:49:43 +0200
Precedence: bulk
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: [PATCH v4 5/7] iommu/dma: Make limit checks self-contained
To: Robin Murphy <robin.murphy@arm.com>, Joerg Roedel <joro@8bytes.org>,
 Christoph Hellwig <hch@lst.de>
Cc: Vineet Gupta <vgupta@kernel.org>, Russell King <linux@armlinux.org.uk>,
 Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>,
 Huacai Chen <chenhuacai@kernel.org>, WANG Xuerui <kernel@xen0n.name>,
 Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
 Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt
 <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>,
 Lorenzo Pieralisi <lpieralisi@kernel.org>, Hanjun Guo
 <guohanjun@huawei.com>, Sudeep Holla <sudeep.holla@arm.com>,
 "K. Y. Srinivasan" <kys@microsoft.com>,
 Haiyang Zhang <haiyangz@microsoft.com>, Wei Liu <wei.liu@kernel.org>,
 Dexuan Cui <decui@microsoft.com>,
 Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
 David Woodhouse <dwmw2@infradead.org>, Lu Baolu <baolu.lu@linux.intel.com>,
 Niklas Schnelle <schnelle@linux.ibm.com>,
 Matthew Rosato <mjrosato@linux.ibm.com>,
 Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
 Jean-Philippe Brucker <jean-philippe@linaro.org>,
 Rob Herring <robh+dt@kernel.org>, Frank Rowand <frowand.list@gmail.com>,
 Marek Szyprowski <m.szyprowski@samsung.com>, Jason Gunthorpe <jgg@ziepe.ca>,
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
 linux-acpi@vger.kernel.org, iommu@lists.linux.dev,
 devicetree@vger.kernel.org, Jason Gunthorpe <jgg@nvidia.com>
References: <cover.1713523152.git.robin.murphy@arm.com>
 <e28a114243d1e79eb3609aded034f8529521333f.1713523152.git.robin.murphy@arm.com>
 <aeb13631-7504-4c3c-ba7b-812bf121a60f@oldschoolsolutions.biz>
 <a4105d70-bec5-4fff-b9bf-04d0b03f81d6@arm.com>
Content-Language: en-US
From: Jens Glathe <jens.glathe@oldschoolsolutions.biz>
In-Reply-To: <a4105d70-bec5-4fff-b9bf-04d0b03f81d6@arm.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: quoted-printable
UI-OutboundReport: notjunk:1;M01:P0:qGcpoOb2bMA=;OYMmfwCyP4ATmR7YLDzYf0NQvOT
 Vq4EF7Zw55G8zloA1nBYhi3PnJpDKhr6DQuKVQr3x/OZ4bVovUeOP9Yt8JkF/Y3cuKHRYd3pm
 z4EcOGd2xQWOmhytIzyqyIMwTugk4WHA4YgupoSI1ss7Myt9hMlbYsWlRzM3OScGnvMS+UoGb
 85l5GjXASHV/+xZMzoM6p+FGBmXvmTDYF/19wfEPLgPQgUwiwgn0esCVk1U2P2+j3SWunOhkO
 BiT6hEAASzaCLrCGWU+YcKfGZaLrBXIACblUeG+jswWpEWNOrFotuhFFZvyD53sAJpqX493Uo
 RwJKpMm5DOvg8pEw0YqLojiX34HiIKBwZNUFhtu/mUXR0n5InMvQnYnX/U6uuuySmdovXF0y7
 2r7d6YthJBJD03qjdVn0/V7C8YoLzH6jOWNXhF0vKkw6oMAbh2hCOgCLqReGEcgt+M/4D9F9K
 nfzg//8+1S/scX2BM1ehQRkwh8TwpKYkML4JgnLavGn/9ip6PmTXKuwq/6K1W4sXNnNRxKVyq
 s0Yp07QJy+Qh5Z7VDbTO8oCxx5Yh+p07HDY03lTpxYjerStd4Si+JiqgDPWwnYjn5wbZXoS8u
 EbH9hA1EUtv6nU1AfKSZz3WaDCCSBkvdbKGvcmcMOOq/X64/O4yyJOlRFwLHBqpf3XkEVVasK
 BUOxk3YQFpJRwFmpdawerEUUjoxOvJEPg1NzAFRaW45XQGnAIaKA9KuFwTxAmHyr1msW30x/l
 h0Pf1q34pySadLyjOAfbs/cNEk2HLfWCTQtmVOKYuIwDbsfKzG6Z8M=

Hi Robin,

oh that was fast. Will test, thanks!

with best regards

Jens

On 6/3/24 21:46, Robin Murphy wrote:
> Hi Jens,
>
> On 2024-06-03 8:37 pm, Jens Glathe wrote:
>> Hi Robin,
>>
>> an observation from 6.10-rc1: On sc8280xp (Lenovo X13s, Windows Dev Kit
>> 2023), when booted to EL2 with the arm-smmuv3 under control of Linux, i=
t
>> fails to set up DMA transfers to nvme. My box boots from nvme, so I onl=
y
>> got a black screen. @craftyguy booted from USB, and got this:
>
> Indeed, I see there's a dma-ranges property with a base of 0 in that
> DT, so all manner of hilarity may ensue. The fix is here, just waiting
> to be picked up:
>
> https://lore.kernel.org/linux-iommu/159193e80b6a7701c61b32d6119ac68989d4=
57bd.1716997607.git.robin.murphy@arm.com/
>
>
> Thanks,
> Robin.