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From: Sibi Sankar <quic_sibis@quicinc.com>
To: <andersson@kernel.org>, <krzysztof.kozlowski+dt@linaro.org>,
<robh+dt@kernel.org>, <manivannan.sadhasivam@linaro.org>,
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Sibi Sankar <quic_sibis@quicinc.com>
Subject: [PATCH V2 04/11] dt-bindings: remoteproc: qcom,sc7280-mss-pil: Update
memory-region
Date: Mon, 9 Jan 2023 09:18:36 +0530
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| Series |
Fix XPU violation during modem metadata authentication
|
|
Commit Message
Sibi Sankar
Jan. 9, 2023, 3:48 a.m. UTC
The dynamic memory region used for metadata authentication would still
be a part of the kernel mapping and any access to this region by the
application processor after assigning it to the remote Q6 will result
in a XPU violation. This is fixed by using a no-map carveout instead.
Update the bindings to reflect the addition of the new modem metadata
carveout on SC7280 SoC.
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
---
v2:
* Pad commit message to explain bindings break [Krzysztof]
* Split dt/bindings per SoC [Krzysztof]
.../devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Comments
On 09/01/2023 04:48, Sibi Sankar wrote: > The dynamic memory region used for metadata authentication would still > be a part of the kernel mapping and any access to this region by the Same problem. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml index b4de0521a89d..005cb21732af 100644 --- a/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml +++ b/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml @@ -95,6 +95,7 @@ properties: items: - description: MBA reserved region - description: modem reserved region + - description: metadata reserved region firmware-name: $ref: /schemas/types.yaml#/definitions/string-array @@ -240,7 +241,7 @@ examples: <&rpmhpd SC7280_MSS>; power-domain-names = "cx", "mss"; - memory-region = <&mba_mem>, <&mpss_mem>; + memory-region = <&mba_mem>, <&mpss_mem>, <&mdata_mem>; qcom,qmp = <&aoss_qmp>;