This is a note to let you know that I've just added the patch titled
arm64: Change kernel stack size to 16K
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-change-kernel-stack-size-to-16k.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 845ad05ec31e0f3872a321e10dbeaf872022632c Mon Sep 17 00:00:00 2001
From: Feng Kan <fkan@xxxxxxx>
Date: Tue, 23 Jul 2013 18:52:31 +0100
Subject: arm64: Change kernel stack size to 16K
From: Feng Kan <fkan@xxxxxxx>
commit 845ad05ec31e0f3872a321e10dbeaf872022632c upstream.
Written by Catalin Marinas, tested by APM on storm platform. This is needed
because of the failures encountered when running SpecWeb benchmark test.
Signed-off-by: Feng Kan <fkan@xxxxxxx>
Acked-by: Kumar Sankaran <ksankaran@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/thread_info.h | 4 ++--
arch/arm64/kernel/entry.S | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -24,10 +24,10 @@
#include <linux/compiler.h>
#ifndef CONFIG_ARM64_64K_PAGES
-#define THREAD_SIZE_ORDER 1
+#define THREAD_SIZE_ORDER 2
#endif
-#define THREAD_SIZE 8192
+#define THREAD_SIZE 16384
#define THREAD_START_SP (THREAD_SIZE - 16)
#ifndef __ASSEMBLY__
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -121,7 +121,7 @@
.macro get_thread_info, rd
mov \rd, sp
- and \rd, \rd, #~((1 << 13) - 1) // top of 8K stack
+ and \rd, \rd, #~(THREAD_SIZE - 1) // top of stack
.endm
/*
Patches currently in stable-queue which might be from fkan@xxxxxxx are
queue-3.10/arm64-change-kernel-stack-size-to-16k.patch
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