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Diffstat (limited to 'arch/mips/include/asm/processor.h')
-rw-r--r--arch/mips/include/asm/processor.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index 087a8884ef06..ab387910009a 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -33,13 +33,19 @@ extern void (*cpu_wait)(void);
extern unsigned int vced_count, vcei_count;
+/*
+ * A special page (the vdso) is mapped into all processes at the very
+ * top of the virtual memory space.
+ */
+#define SPECIAL_PAGES_SIZE PAGE_SIZE
+
#ifdef CONFIG_32BIT
/*
* User space process size: 2GB. This is hardcoded into a few places,
* so don't change it unless you know what you are doing.
*/
#define TASK_SIZE 0x7fff8000UL
-#define STACK_TOP TASK_SIZE
+#define STACK_TOP ((TASK_SIZE & PAGE_MASK) - SPECIAL_PAGES_SIZE)
/*
* This decides where the kernel will search for a free chunk of vm
@@ -59,7 +65,8 @@ extern unsigned int vced_count, vcei_count;
#define TASK_SIZE32 0x7fff8000UL
#define TASK_SIZE 0x10000000000UL
#define STACK_TOP \
- (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE)
+ (((test_thread_flag(TIF_32BIT_ADDR) ? \
+ TASK_SIZE32 : TASK_SIZE) & PAGE_MASK) - SPECIAL_PAGES_SIZE)
/*
* This decides where the kernel will search for a free chunk of vm
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