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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-06-21 20:38:17 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-06-28 17:59:46 +0100
commit9641c7cc5a7f6d5c9dc9b43eea4e5f8c3c08c94e (patch)
tree5ff57feabe0538d58404ec4918b0d94d75f69846 /arch/arm/kernel/vmlinux.lds.S
parent002547b4f86c27bfac5bae344b723d250857be6b (diff)
[ARM] nommu: uaccess tweaks
MMUless systems have only one address space for all threads, so both the usual access_ok() checks, and the exception handling do not make much sense. Hence, discard the fixup and exception tables at link time, use memcpy/memset for the user copy/clearing functions, and define the permission check macros to be constants. Some of this patch was derived from the equivalent patch by Hyok S. Choi. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/vmlinux.lds.S')
-rw-r--r--arch/arm/kernel/vmlinux.lds.S8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 2b254e88595c..2df9688a7028 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -80,6 +80,10 @@ SECTIONS
*(.exit.text)
*(.exit.data)
*(.exitcall.exit)
+#ifndef CONFIG_MMU
+ *(.fixup)
+ *(__ex_table)
+#endif
}
.text : { /* Real text segment */
@@ -87,7 +91,9 @@ SECTIONS
*(.text)
SCHED_TEXT
LOCK_TEXT
+#ifdef CONFIG_MMU
*(.fixup)
+#endif
*(.gnu.warning)
*(.rodata)
*(.rodata.*)
@@ -142,7 +148,9 @@ SECTIONS
*/
. = ALIGN(32);
__start___ex_table = .;
+#ifdef CONFIG_MMU
*(__ex_table)
+#endif
__stop___ex_table = .;
/*