From: Will Deacon <will@kernel.org>
To: Joerg Roedel <joro@8bytes.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Robin Murphy <robin.murphy@arm.com>
Cc: catalin.marinas@arm.com, kernel-team@android.com,
Will Deacon <will@kernel.org>,
Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org, iommu@lists.linux-foundation.org
Subject: Re: [PATCH] iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context
Date: Thu, 7 Jan 2021 14:22:47 +0000 [thread overview]
Message-ID: <161002864635.3143366.6483038182849083276.b4-ty@kernel.org> (raw)
In-Reply-To: <20210106005038.4152731-1-bjorn.andersson@linaro.org>
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
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org>
To: Joerg Roedel <joro@8bytes.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Robin Murphy <robin.murphy@arm.com>
Cc: Will Deacon <will@kernel.org>,
catalin.marinas@arm.com, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org, linux-arm-msm@vger.kernel.org,
kernel-team@android.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context
Date: Thu, 7 Jan 2021 14:22:47 +0000 [thread overview]
Message-ID: <161002864635.3143366.6483038182849083276.b4-ty@kernel.org> (raw)
In-Reply-To: <20210106005038.4152731-1-bjorn.andersson@linaro.org>
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
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org>
To: Joerg Roedel <joro@8bytes.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Robin Murphy <robin.murphy@arm.com>
Cc: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
Will Deacon <will@kernel.org>,
catalin.marinas@arm.com, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org, linux-arm-msm@vger.kernel.org,
kernel-team@android.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context
Date: Thu, 7 Jan 2021 14:22:47 +0000 [thread overview]
Message-ID: <161002864635.3143366.6483038182849083276.b4-ty@kernel.org> (raw)
In-Reply-To: <20210106005038.4152731-1-bjorn.andersson@linaro.org>
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
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-07 14:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 0:50 [PATCH] iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context Bjorn Andersson
2021-01-06 0:50 ` Bjorn Andersson
2021-01-06 0:50 ` Bjorn Andersson
2021-01-07 14:22 ` Will Deacon [this message]
2021-01-07 14:22 ` Will Deacon
2021-01-07 14:22 ` Will Deacon
2021-03-01 19:59 ` patchwork-bot+linux-arm-msm
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