Having a non-MSA (Modem Self-Authentication) SID bypassed breaks modem sandboxing i.e if a transaction were to originate from it, the hardware memory protections units (XPUs) would fail to flag them (any transaction originating from modem are historically termed as an MSA transaction). Drop the unused non-MSA modem SID on SC7180 SoCs and cheza so that SMMU continues to block them.
Fixes: bec71ba243e95 ("arm64: dts: qcom: sc7180: Update Q6V5 MSS node") Fixes: 68aee4af5f620 ("arm64: dts: qcom: sdm845-cheza: Add iommus property") Cc: stable@vger.kernel.org Reported-by: Sai Prakash Ranjan saiprakash.ranjan@codeaurora.org Signed-off-by: Sibi Sankar sibis@codeaurora.org --- arch/arm64/boot/dts/qcom/sc7180-idp.dts | 2 +- arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/sc7180-idp.dts b/arch/arm64/boot/dts/qcom/sc7180-idp.dts index 39dbfc89689e8..141de49a1b7d6 100644 --- a/arch/arm64/boot/dts/qcom/sc7180-idp.dts +++ b/arch/arm64/boot/dts/qcom/sc7180-idp.dts @@ -312,7 +312,7 @@ &qupv3_id_1 { &remoteproc_mpss { status = "okay"; compatible = "qcom,sc7180-mss-pil"; - iommus = <&apps_smmu 0x460 0x1>, <&apps_smmu 0x444 0x3>; + iommus = <&apps_smmu 0x461 0x0>, <&apps_smmu 0x444 0x3>; memory-region = <&mba_mem &mpss_mem>; };
diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi index 70466cc4b4055..64fc1bfd66fad 100644 --- a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi @@ -634,7 +634,7 @@ &mdss_mdp { };
&mss_pil { - iommus = <&apps_smmu 0x780 0x1>, + iommus = <&apps_smmu 0x781 0x0>, <&apps_smmu 0x724 0x3>; };