---

yaml --- r: 230971 b: refs/heads/master c: 9887a1f h: refs/heads/master i: 230969: 0793f9b 230967: c8ac429 v: v3
git-mirror · Jan 12, 2011 · a9510b6 · a9510b6
1 parent 4d565c5
commit a9510b6
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Showing 3 changed files with 11 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: df1ca53cba34b1d40a4ed47907d71397e4ee72c2
+refs/heads/master: 9887a1fcddef1386d3387edf6497d08670460edb
diff --git a/trunk/arch/s390/include/asm/system.h b/trunk/arch/s390/include/asm/system.h
@@ -449,7 +449,7 @@ extern void (*_machine_restart)(char *command);
 extern void (*_machine_halt)(void);
 extern void (*_machine_power_off)(void);
 
-#define arch_align_stack(x) (x)
+extern unsigned long arch_align_stack(unsigned long sp);
 
 static inline int tprot(unsigned long addr)
 {

diff --git a/trunk/arch/s390/kernel/process.c b/trunk/arch/s390/kernel/process.c
@@ -30,9 +30,11 @@
 #include <linux/tick.h>
 #include <linux/elfcore.h>
 #include <linux/kernel_stat.h>
+#include <linux/personality.h>
 #include <linux/syscalls.h>
 #include <linux/compat.h>
 #include <linux/kprobes.h>
+#include <linux/random.h>
 #include <asm/compat.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -332,3 +334,10 @@ unsigned long get_wchan(struct task_struct *p)
 	}
 	return 0;
 }
+
+unsigned long arch_align_stack(unsigned long sp)
+{
+	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
+		sp -= get_random_int() & ~PAGE_MASK;
+	return sp & ~0xf;
+}