diff options
| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-06 00:12:05 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:36 -0800 |
| commit | bb152f53120d66c98c1f16518407df6a84f23714 (patch) | |
| tree | 6696d5eccee5af88a7326edaebbd819e628b3e2c | |
| parent | 67df197b1a07944c2e0e40ded3d4fd07d108e110 (diff) | |
[PATCH] x86/x86_64: mark rodata section read-only: make some datastructures const
Mark some key kernel datastructures readonly. This patch was previously
posted on Jun 28th but was back then not merged because nothing was enforcing
rodata anyway.. well that changed now :)
Patch by Christoph Lameter <christoph@lameter.com> and Dave Jones
<davej@redhat.com>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/i386/kernel/entry.S | 1 | ||||
| -rw-r--r-- | arch/i386/kernel/syscall_table.S | 1 | ||||
| -rw-r--r-- | arch/x86_64/ia32/ia32entry.S | 2 | ||||
| -rw-r--r-- | arch/x86_64/kernel/syscall.c | 2 |
4 files changed, 3 insertions, 3 deletions
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S index e50b9315524..607c0600750 100644 --- a/arch/i386/kernel/entry.S +++ b/arch/i386/kernel/entry.S @@ -657,6 +657,7 @@ ENTRY(spurious_interrupt_bug) pushl $do_spurious_interrupt_bug jmp error_code +.section .rodata,"a" #include "syscall_table.S" syscall_table_size=(.-sys_call_table) diff --git a/arch/i386/kernel/syscall_table.S b/arch/i386/kernel/syscall_table.S index 9b21a31d4f4..f7ba4acc20e 100644 --- a/arch/i386/kernel/syscall_table.S +++ b/arch/i386/kernel/syscall_table.S @@ -1,4 +1,3 @@ -.data ENTRY(sys_call_table) .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */ .long sys_exit diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S index e0eb0c712fe..df0773c9bdb 100644 --- a/arch/x86_64/ia32/ia32entry.S +++ b/arch/x86_64/ia32/ia32entry.S @@ -341,7 +341,7 @@ ENTRY(ia32_ptregs_common) jmp ia32_sysret /* misbalances the return cache */ CFI_ENDPROC - .data + .section .rodata,"a" .align 8 .globl ia32_sys_call_table ia32_sys_call_table: diff --git a/arch/x86_64/kernel/syscall.c b/arch/x86_64/kernel/syscall.c index e263685f864..7c176b3edde 100644 --- a/arch/x86_64/kernel/syscall.c +++ b/arch/x86_64/kernel/syscall.c @@ -19,7 +19,7 @@ typedef void (*sys_call_ptr_t)(void); extern void sys_ni_syscall(void); -sys_call_ptr_t sys_call_table[__NR_syscall_max+1] __cacheline_aligned = { +const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = { /* Smells like a like a compiler bug -- it doesn't work when the & below is removed. */ [0 ... __NR_syscall_max] = &sys_ni_syscall, #include <asm-x86_64/unistd.h> |