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authorFeng Kan <fkan@apm.com>2013-07-23 17:52:31 (GMT)
committerCatalin Marinas <catalin.marinas@arm.com>2013-07-26 12:37:29 (GMT)
commit845ad05ec31e0f3872a321e10dbeaf872022632c (patch)
tree7852dcec577b1c7e86fcbe0cd2d63f36cd32ef43
parentb0946fc84628b8d60e7a2034b48d1aff7da9d1df (diff)
arm64: Change kernel stack size to 16K
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@apm.com> Acked-by: Kumar Sankaran <ksankaran@apm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
-rw-r--r--arch/arm64/include/asm/thread_info.h4
-rw-r--r--arch/arm64/kernel/entry.S2
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h
index 3659e46..23a3c47 100644
--- 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__
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 1d13142..6ad781b 100644
--- 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
/*

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