linux-kernel - [PATCH 4.20 86/88] arm64: dts: qcom: msm8998: Extend TZ reserved memory area

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Date:   Mon,  4 Mar 2019 09:23:09 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sibi Sankar <sibis@...eaurora.org>,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>,
        Andy Gross <andy.gross@...aro.org>
Subject: [PATCH 4.20 86/88] arm64: dts: qcom: msm8998: Extend TZ reserved memory area

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Marc Gonzalez <marc.w.gonzalez@...e.fr>

commit 6e53330909672bd9a8c9f826e989a5945d9d9fdf upstream.

My console locks up as soon as Linux writes to [88800000,88f00000[
AFAIU, that memory area is reserved for trustzone.

Extend TZ reserved memory range, to prevent Linux from stepping on
trustzone's toes.

Cc: stable@...r.kernel.org # 4.20+
Reviewed-by: Sibi Sankar <sibis@...eaurora.org>
Fixes: c7833949564ec ("arm64: dts: qcom: msm8998: Add smem related nodes")
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@...e.fr>
Signed-off-by: Andy Gross <andy.gross@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm64/boot/dts/qcom/msm8998.dtsi |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm64/boot/dts/qcom/msm8998.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8998.dtsi
@@ -36,7 +36,7 @@
 		};
 
 		memory@...00000 {
-			reg = <0x0 0x86200000 0x0 0x2600000>;
+			reg = <0x0 0x86200000 0x0 0x2d00000>;
 			no-map;
 		};