From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Jonathan Marek <jonathan@marek.ca>
Cc: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
linux-arm-msm@vger.kernel.org, Andy Gross <agross@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm-owner@vger.kernel.org
Subject: Re: [PATCH 2/6] arm64: dts: qcom: sm8250: add apps_smmu node
Date: Thu, 28 May 2020 19:48:50 -0700 [thread overview]
Message-ID: <20200529024850.GU279327@builder.lan> (raw)
In-Reply-To: <8f9a5750-7909-4be7-6780-198d8c242af3@marek.ca>
On Mon 25 May 04:53 PDT 2020, Jonathan Marek wrote:
[..]
> I guess the commit message is ambiguous, that's not what I meant. Is "Now
> that the kernel initializes the iommu, the bypass mappings set by the
> bootloader are cleared. Adding the iommus property is required so that new
> mappings are created for UFS." better?
>
This looks better, but it's actually not a bypass mapping that we
inherit from the bootloader, it's the stream mapping pointing to a
disabled (~ARM_SMMU_SCTLR_M) context bank. So when we wipe the stream
mappings we will fault on the unmatched stream - which secure world
"handles" for us...
As such, I think you should replace "bypass" with "stream".
Regards,
Bjorn
next prev parent reply other threads:[~2020-05-29 2:50 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-24 2:38 [PATCH 0/6] arm64: dts: qcom: smmu/USB nodes and HDK855/HDK865 dts Jonathan Marek
2020-05-24 2:38 ` [PATCH 1/6] arm64: dts: qcom: sm8150: add apps_smmu node Jonathan Marek
2020-05-25 9:37 ` Sai Prakash Ranjan
2020-06-05 14:15 ` Sai Prakash Ranjan
2020-05-29 2:52 ` Bjorn Andersson
2020-05-29 3:02 ` Jonathan Marek
2020-05-29 3:15 ` Bjorn Andersson
2020-05-29 3:34 ` Jonathan Marek
2020-05-29 3:42 ` Bjorn Andersson
2020-06-09 19:52 ` Jonathan Marek
2020-06-05 14:03 ` Sai Prakash Ranjan
2020-06-05 14:10 ` Jonathan Marek
2020-06-05 14:13 ` Sai Prakash Ranjan
2020-06-05 14:31 ` Nicolas Dechesne
2020-06-05 14:39 ` Sai Prakash Ranjan
2020-06-05 14:51 ` Nicolas Dechesne
2020-06-05 15:04 ` Sai Prakash Ranjan
2020-05-24 2:38 ` [PATCH 2/6] arm64: dts: qcom: sm8250: " Jonathan Marek
2020-05-25 9:42 ` Sai Prakash Ranjan
2020-05-25 10:09 ` Jonathan Marek
2020-05-25 10:54 ` Sai Prakash Ranjan
2020-05-25 11:08 ` Jonathan Marek
2020-05-25 11:17 ` Sai Prakash Ranjan
2020-05-25 11:27 ` Jonathan Marek
2020-05-25 11:40 ` Sai Prakash Ranjan
2020-05-25 11:53 ` Jonathan Marek
2020-05-25 11:58 ` Sai Prakash Ranjan
2020-05-29 2:48 ` Bjorn Andersson [this message]
2020-05-24 2:38 ` [PATCH 3/6] arm64: dts: qcom: sm8150: Add secondary USB and PHY nodes Jonathan Marek
2020-05-24 2:38 ` [PATCH 4/6] arm64: dts: qcom: sm8250: Add USB and PHY device nodes Jonathan Marek
2020-05-24 2:38 ` [PATCH 5/6] arm64: dts: qcom: add sm8150 hdk dts Jonathan Marek
2020-05-29 3:01 ` Bjorn Andersson
2020-06-09 19:46 ` Jonathan Marek
2020-05-24 2:38 ` [PATCH 6/6] arm64: dts: qcom: add sm8250 " Jonathan Marek
2020-05-29 3:03 ` Bjorn Andersson
2020-06-09 19:42 ` Jonathan Marek
2020-05-29 3:05 ` [PATCH 0/6] arm64: dts: qcom: smmu/USB nodes and HDK855/HDK865 dts Bjorn Andersson
2020-05-29 3:15 ` Jonathan Marek
2020-05-29 6:44 ` Bjorn Andersson
2020-06-04 13:52 ` Manivannan Sadhasivam
2020-06-04 14:06 ` Jonathan Marek
2020-06-04 15:58 ` Manivannan Sadhasivam
2020-06-04 16:09 ` Jonathan Marek
2020-06-11 18:05 ` Manivannan Sadhasivam
2020-06-11 18:14 ` Jonathan Marek
2020-06-11 18:22 ` Manivannan Sadhasivam
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