[PATCH] ARM: Fix kernel stack offset calculations
Various places in the ARM kernel implicitly assumed that kernel
stacks are always 8K due to hard coded constants. Replace these
constants with definitions.
Correct the allowable range of kernel stack pointer values within
the allocation. Arrange for the entire kernel stack to be zeroed,
not just the upper 4K if CONFIG_DEBUG_STACK_USAGE is set.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 171b3e8..4733877 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -19,6 +19,7 @@
#include <asm/procinfo.h>
#include <asm/ptrace.h>
#include <asm/constants.h>
+#include <asm/thread_info.h>
#include <asm/system.h>
#define PROCINFO_MMUFLAGS 8
@@ -131,7 +132,7 @@
.long processor_id @ r4
.long __machine_arch_type @ r5
.long cr_alignment @ r6
- .long init_thread_union+8192 @ sp
+ .long init_thread_union + THREAD_START_SP @ sp
/*
* The following fragment of code is executed with the MMU on, and uses