From: Will Deacon <will@kernel.org>
To: Rob Clark <robdclark@gmail.com>, iommu@lists.linux-foundation.org
Cc: catalin.marinas@arm.com, kernel-team@android.com,
Will Deacon <will@kernel.org>,
"open list:IOMMU SUBSYSTEM" <iommu@lists.linux.dev>,
Manivannan Sadhasivam <mani@kernel.org>,
open list <linux-kernel@vger.kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Rob Clark <robdclark@chromium.org>,
Johan Hovold <johan@kernel.org>, Joerg Roedel <joro@8bytes.org>,
linux-arm-msm@vger.kernel.org, stable@vger.kernel.org,
freedreno@lists.freedesktop.org,
Danila Tikhonov <danila@jiaxyga.com>,
"moderated list:ARM SMMU DRIVERS"
<linux-arm-kernel@lists.infradead.org>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Elliot Berman <quic_eberman@quicinc.com>,
Bjorn Andersson <quic_bjorande@quicinc.com>
Subject: Re: [PATCH v2] iommu/arm-smmu-qcom: Add missing GMU entry to match table
Date: Tue, 12 Dec 2023 17:21:00 +0000 [thread overview]
Message-ID: <170238423845.3097390.5149753894021729752.b4-ty@kernel.org> (raw)
In-Reply-To: <20231210180655.75542-1-robdclark@gmail.com>
On Sun, 10 Dec 2023 10:06:53 -0800, Rob Clark wrote:
> From: Rob Clark <robdclark@chromium.org>
>
> In some cases the firmware expects cbndx 1 to be assigned to the GMU,
> so we also want the default domain for the GMU to be an identy domain.
> This way it does not get a context bank assigned. Without this, both
> of_dma_configure() and drm/msm's iommu_domain_attach() will trigger
> allocating and configuring a context bank. So GMU ends up attached to
> both cbndx 1 and later cbndx 2. This arrangement seemingly confounds
> and surprises the firmware if the GPU later triggers a translation
> fault, resulting (on sc8280xp / lenovo x13s, at least) in the SMMU
> getting wedged and the GPU stuck without memory access.
>
> [...]
Applied to will (for-joerg/arm-smmu/updates), thanks!
[1/1] iommu/arm-smmu-qcom: Add missing GMU entry to match table
https://git.kernel.org/will/c/afc95681c306
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
prev parent reply other threads:[~2023-12-12 17:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-10 18:06 Rob Clark
2023-12-11 10:11 ` Johan Hovold
2023-12-11 22:58 ` Robin Murphy
2023-12-12 17:21 ` Will Deacon [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=170238423845.3097390.5149753894021729752.b4-ty@kernel.org \
--to=will@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=danila@jiaxyga.com \
--cc=dmitry.baryshkov@linaro.org \
--cc=freedreno@lists.freedesktop.org \
--cc=iommu@lists.linux-foundation.org \
--cc=iommu@lists.linux.dev \
--cc=johan@kernel.org \
--cc=joro@8bytes.org \
--cc=kernel-team@android.com \
--cc=konrad.dybcio@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mani@kernel.org \
--cc=quic_bjorande@quicinc.com \
--cc=quic_eberman@quicinc.com \
--cc=robdclark@chromium.org \
--cc=robdclark@gmail.com \
--cc=robin.murphy@arm.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®