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Message-Id: <167409986459.3039214.14669304455685242733.b4-ty@kernel.org> Date: Wed, 18 Jan 2023 21:44:28 -0600 From: Bjorn Andersson <andersson@...nel.org> To: quic_sibis@...cinc.com, Manivannan Sadhasivam <mani@...nel.org> Cc: regressions@...mhuis.info, linux-kernel@...r.kernel.org, konrad.dybcio@...ainline.org, will@...nel.org, robin.murphy@....com, catalin.marinas@....com, devicetree@...r.kernel.org, krzysztof.kozlowski+dt@...aro.org, sumit.semwal@...aro.org, amit.pundir@...aro.org, robh+dt@...nel.org, agross@...nel.org, linux-arm-msm@...r.kernel.org Subject: Re: (subset) [PATCH V4 00/11] Fix XPU violation during modem metadata authentication On Tue, 17 Jan 2023 14:28:29 +0530, Sibi Sankar wrote: > The memory region allocated using dma_alloc_attr with no kernel mapping > attribute set would still be a part of the linear kernel map. Any access > to this region by the application processor after assigning it to the > remote Q6 will result in a XPU violation. Fix this by replacing the > dynamically allocated memory region with a no-map carveout and unmap the > modem metadata memory region before passing control to the remote Q6. > The addition of the carveout and memunmap is required only on SoCs that > mandate memory protection before transferring control to Q6, hence the > driver falls back to dynamic memory allocation in the absence of the > modem metadata carveout. > > [...] Applied, thanks! [01/11] dt-bindings: remoteproc: qcom,q6v5: Move MSM8996 to schema commit: bdea142295ffd76aaec2a90a36ba09ad19660686 [02/11] dt-bindings: remoteproc: qcom,msm8996-mss-pil: Update memory region commit: 9b3024247b2ddea6880fa77b638c870ddbdb6bba [03/11] dt-bindings: remoteproc: qcom,sc7180-mss-pil: Update memory-region commit: 95864f27330674c970c84b81ae791182de150b0f [04/11] dt-bindings: remoteproc: qcom,sc7280-mss-pil: Update memory-region commit: eb48137d783b4c845c7b081e32a73666326dcbb3 [05/11] Revert "remoteproc: qcom_q6v5_mss: map/unmap metadata region before/after use" commit: a899d542b687c9b04ccbd9eefabc829ba5fef791 [06/11] remoteproc: qcom_q6v5_mss: Use a carveout to authenticate modem headers commit: 57f72170a2b2a362c35bb9407fc844eac5afdec1 Best regards, -- Bjorn Andersson <andersson@...nel.org>
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