From 146e4b3c8b92071b18f0b2e6f47165bad4f9e825 Mon Sep 17 00:00:00 2001
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Sat, 9 Feb 2008 18:24:35 +0100
Subject: [S390] 1K/2K page table pages.

This patch implements 1K/2K page table pages for s390.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 include/asm-s390/elf.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'include/asm-s390/elf.h')

diff --git a/include/asm-s390/elf.h b/include/asm-s390/elf.h
index b73a424d0f9..8181ca5b98f 100644
--- a/include/asm-s390/elf.h
+++ b/include/asm-s390/elf.h
@@ -115,6 +115,7 @@ typedef s390_regs elf_gregset_t;
 
 #include <linux/sched.h>	/* for task_struct */
 #include <asm/system.h>		/* for save_access_regs */
+#include <asm/mmu_context.h>
 
 /*
  * This is used to ensure we don't load something for the wrong architecture.
@@ -214,4 +215,16 @@ do {							\
 } while (0)
 #endif /* __s390x__ */
 
+/*
+ * An executable for which elf_read_implies_exec() returns TRUE will
+ * have the READ_IMPLIES_EXEC personality flag set automatically.
+ */
+#define elf_read_implies_exec(ex, executable_stack)	\
+({							\
+	if (current->mm->context.noexec &&		\
+	    executable_stack != EXSTACK_DISABLE_X)	\
+		disable_noexec(current->mm, current);	\
+	current->mm->context.noexec == 0;		\
+})
+
 #endif
-- 
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