linux-kernel - [PATCH 3.10 124/129] arm64: dts: Reserve the memory used for secondary CPU release address

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Date:	Mon,  6 Jan 2014 14:39:13 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Catalin Marinas <catalin.marinas@....com>,
	Mark Brown <broonie@...nel.org>
Subject: [PATCH 3.10 124/129] arm64: dts: Reserve the memory used for secondary CPU release address

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

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

From: Catalin Marinas <catalin.marinas@....com>

commit df503ba7f653c590b475ab80bde788edf5af70d5 upstream.

With the spin-table SMP booting method, secondary CPUs poll a location
passed in the DT. The foundation-v8.dts file doesn't have this memory
reserved and there is a risk of Linux using it before secondary CPUs are
started.

Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Cc: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm64/boot/dts/foundation-v8.dts |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/arm64/boot/dts/foundation-v8.dts
+++ b/arch/arm64/boot/dts/foundation-v8.dts
@@ -6,6 +6,8 @@
 
 /dts-v1/;
 
+/memreserve/ 0x80000000 0x00010000;
+
 / {
 	model = "Foundation-v8A";
 	compatible = "arm,foundation-aarch64", "arm,vexpress";


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