Re: [PATCH] iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context
From: Will Deacon <will@kernel.org>
Date: 2021-01-07 14:23:58
Also in:
linux-arm-msm, linux-iommu, lkml
On Tue, 5 Jan 2021 16:50:38 -0800, Bjorn Andersson wrote:
On SM8150 it's occasionally observed that the boot hangs in between the writing of SMEs and context banks in arm_smmu_device_reset(). The problem seems to coincide with a display refresh happening after updating the stream mapping, but before clearing - and there by disabling translation - the context bank picked to emulate translation bypass. [...]
Applied to arm64 (for-next/iommu/fixes), thanks!
[1/1] iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context
https://git.kernel.org/arm64/c/aded8c7c2b72
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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