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| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-06 00:12:02 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:36 -0800 |
| commit | 63aaf3086baea7b94c218053af8237f9dbac5d05 (patch) | |
| tree | dc32bf8878d01a25a321eb6412f27bce7ec7c5b7 /arch/i386/Kconfig.debug | |
| parent | 37b73c828185731f6236a6387c02d7b08c150810 (diff) | |
| download | lwn-63aaf3086baea7b94c218053af8237f9dbac5d05.tar.gz lwn-63aaf3086baea7b94c218053af8237f9dbac5d05.zip | |
[PATCH] x86/x86_64: mark rodata section read only: x86 parts
x86 specific parts to make the .rodata section read only
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/Kconfig.debug')
| -rw-r--r-- | arch/i386/Kconfig.debug | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/i386/Kconfig.debug b/arch/i386/Kconfig.debug index c48b424dd640..bf32ecc9ad04 100644 --- a/arch/i386/Kconfig.debug +++ b/arch/i386/Kconfig.debug @@ -42,6 +42,16 @@ config DEBUG_PAGEALLOC This results in a large slowdown, but helps to find certain types of memory corruptions. +config DEBUG_RODATA + bool "Write protect kernel read-only data structures" + depends on DEBUG_KERNEL + help + Mark the kernel read-only data as write-protected in the pagetables, + in order to catch accidental (and incorrect) writes to such const + data. This option may have a slight performance impact because a + portion of the kernel code won't be covered by a 2MB TLB anymore. + If in doubt, say "N". + config 4KSTACKS bool "Use 4Kb for kernel stacks instead of 8Kb" depends on DEBUG_KERNEL |