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[PATCH] x86/x86_64: mark rodata section read only: generic infrastructure

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Generic prep-work for marking the .rodata section readonly:
* Align the rodata section at 4Kb boundary
* call the mark_rodata_ro() function when available

Signed-off-by: Arjan van de Ven <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Adrian Bunk <[email protected]>
Cc: Andi Kleen <[email protected]>
Signed-off-by: Jesper Juhl <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Arjan van de Ven 2006-01-06 00:12:01 -08:00 • committed by Linus Torvalds
commit 37b73c8281
2 changed files with 9 additions and 0 deletions
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5
init/main.c
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@ -52,6 +52,7 @@
#include <asm/bugs.h>
#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/cacheflush.h>
/*
* This is one of the first .c files built. Error out early
@ -99,6 +100,9 @@ extern void acpi_early_init(void);
#else
static inline void acpi_early_init(void) { }
#endif
#ifndef CONFIG_DEBUG_RODATA
static inline void mark_rodata_ro(void) { }
#endif
#ifdef CONFIG_TC
extern void tc_init(void);
@ -708,6 +712,7 @@ static int init(void * unused)
*/
free_initmem();
unlock_kernel();
mark_rodata_ro();
system_state = SYSTEM_RUNNING;
numa_default_policy();