From: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <joro@8bytes.org>,
Jordan Crouse <jcrouse@codeaurora.org>,
Rob Clark <robdclark@chromium.org>,
Sibi Sankar <sibis@codeaurora.org>,
linux-arm-kernel@lists.infradead.org,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v3 5/8] iommu/arm-smmu-qcom: Consistently initialize stream mappings
Date: Fri, 11 Sep 2020 08:26:29 +0000 [thread overview]
Message-ID: <010101747c45e395-e7b8299e-f3bf-4dbb-828f-c3608b2121d3-000000@us-west-2.amazonses.com> (raw)
In-Reply-To: <20200904155513.282067-6-bjorn.andersson@linaro.org>
On 2020-09-04 21:25, Bjorn Andersson wrote:
> Firmware that traps writes to S2CR to translate BYPASS into FAULT also
> ignores writes of type FAULT. As such booting with "disable_bypass" set
> will result in all S2CR registers left as configured by the bootloader.
>
> This has been seen to result in indeterministic results, as these
> mappings might linger and reference context banks that Linux is
> reconfiguring.
>
> Use the fact that BYPASS writes result in FAULT type to force all
> stream
> mappings to FAULT.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
Reviewed-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
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next prev parent reply other threads:[~2020-09-11 8:26 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-04 15:55 [PATCH v3 0/8] iommu/arm-smmu: Support maintaining bootloader mappings Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` [PATCH v3 1/8] iommu/arm-smmu: Refactor context bank allocation Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-08 18:42 ` Jordan Crouse
2020-09-08 18:42 ` Jordan Crouse
2020-09-08 18:42 ` Jordan Crouse
2020-09-08 18:46 ` Jordan Crouse
2020-09-08 18:46 ` Jordan Crouse
2020-09-08 18:46 ` Jordan Crouse
2020-09-11 8:18 ` Sai Prakash Ranjan
2020-09-11 8:18 ` Sai Prakash Ranjan
2020-09-11 8:18 ` Sai Prakash Ranjan
2020-09-04 15:55 ` [PATCH v3 2/8] iommu/arm-smmu: Delay modifying domain during init Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-11 8:20 ` Sai Prakash Ranjan
2020-09-11 8:20 ` Sai Prakash Ranjan
2020-09-11 8:20 ` Sai Prakash Ranjan
2020-09-04 15:55 ` [PATCH v3 3/8] iommu/arm-smmu: Consult context bank allocator for identify domains Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-11 8:21 ` Sai Prakash Ranjan
2020-09-11 8:21 ` Sai Prakash Ranjan
2020-09-11 8:21 ` Sai Prakash Ranjan
2020-09-11 8:24 ` Sai Prakash Ranjan
2020-09-11 8:24 ` Sai Prakash Ranjan
2020-09-11 8:24 ` Sai Prakash Ranjan
2020-09-04 15:55 ` [PATCH v3 4/8] iommu/arm-smmu-qcom: Emulate bypass by using context banks Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-11 8:25 ` Sai Prakash Ranjan
2020-09-11 8:25 ` Sai Prakash Ranjan
2020-09-11 8:25 ` Sai Prakash Ranjan
2020-09-04 15:55 ` [PATCH v3 5/8] iommu/arm-smmu-qcom: Consistently initialize stream mappings Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-11 8:26 ` Sai Prakash Ranjan
2020-09-11 8:26 ` Sai Prakash Ranjan
2020-09-11 8:26 ` Sai Prakash Ranjan [this message]
2020-09-04 15:55 ` [PATCH v3 6/8] iommu/arm-smmu: Add impl hook for inherit boot mappings Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-11 8:27 ` Sai Prakash Ranjan
2020-09-11 8:27 ` Sai Prakash Ranjan
2020-09-11 8:27 ` Sai Prakash Ranjan
2020-09-11 17:13 ` Robin Murphy
2020-09-11 17:13 ` Robin Murphy
2020-09-11 17:13 ` Robin Murphy
2020-09-13 3:25 ` Bjorn Andersson
2020-09-13 3:25 ` Bjorn Andersson
2020-09-13 3:25 ` Bjorn Andersson
2020-09-21 21:08 ` Will Deacon
2020-09-21 21:08 ` Will Deacon
2020-09-21 21:08 ` Will Deacon
2020-09-24 15:55 ` Bjorn Andersson
2020-09-24 15:55 ` Bjorn Andersson
2020-09-24 15:55 ` Bjorn Andersson
2020-10-12 7:31 ` Bjorn Andersson
2020-10-12 7:31 ` Bjorn Andersson
2020-10-12 7:31 ` Bjorn Andersson
2020-10-13 16:47 ` Robin Murphy
2020-10-13 16:47 ` Robin Murphy
2020-10-13 16:47 ` Robin Murphy
2020-09-04 15:55 ` [PATCH v3 7/8] iommu/arm-smmu: Provide helper for allocating identity domain Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-11 8:28 ` Sai Prakash Ranjan
2020-09-11 8:28 ` Sai Prakash Ranjan
2020-09-11 8:28 ` Sai Prakash Ranjan
2020-09-04 15:55 ` [PATCH v3 8/8] iommu/arm-smmu-qcom: Setup identity domain for boot mappings Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-04 15:55 ` Bjorn Andersson
2020-09-11 8:29 ` Sai Prakash Ranjan
2020-09-11 8:29 ` Sai Prakash Ranjan
2020-09-11 8:29 ` Sai Prakash Ranjan
2020-09-11 17:29 ` Robin Murphy
2020-09-11 17:29 ` Robin Murphy
2020-09-11 17:29 ` Robin Murphy
2020-09-05 22:27 ` [PATCH v3 0/8] iommu/arm-smmu: Support maintaining bootloader mappings Rob Clark
2020-09-05 22:27 ` Rob Clark
2020-09-05 22:27 ` Rob Clark
2020-09-09 14:46 ` Laurentiu Tudor
2020-09-09 14:46 ` Laurentiu Tudor
2020-09-09 14:46 ` Laurentiu Tudor
2020-09-10 22:56 ` John Stultz
2020-09-10 22:56 ` John Stultz
2020-09-10 22:56 ` John Stultz
2020-09-11 8:16 ` Sai Prakash Ranjan
2020-09-11 8:16 ` Sai Prakash Ranjan
2020-09-11 8:16 ` Sai Prakash Ranjan
2020-09-11 16:10 ` Amit Pundir
2020-09-11 16:10 ` Amit Pundir
2020-09-11 16:10 ` Amit Pundir
2020-09-16 10:09 ` Laurentiu Tudor
2020-09-16 10:09 ` Laurentiu Tudor
2020-09-16 10:09 ` Laurentiu Tudor
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