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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-06-21 23:38:17 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-06-28 20:59:46 +0400 |
| commit | 9641c7cc5a7f6d5c9dc9b43eea4e5f8c3c08c94e (patch) | |
| tree | 5ff57feabe0538d58404ec4918b0d94d75f69846 /arch/arm/kernel/vmlinux.lds.S | |
| parent | 002547b4f86c27bfac5bae344b723d250857be6b (diff) | |
| download | linux-9641c7cc5a7f6d5c9dc9b43eea4e5f8c3c08c94e.tar.xz | |
[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.S | 8 |
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 = .; /* |