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| author | Helge Deller <deller@parisc-linux.org> | 2006-01-13 13:21:06 -0700 |
|---|---|---|
| committer | Kyle McMartin <kyle@duet.int.mcmartin.ca> | 2006-01-22 20:26:54 -0500 |
| commit | 1bcdd8548286743e1d6b3d53c96a90c6da975620 (patch) | |
| tree | b244aa416992bbd06c4153ec2c97022629826ef2 /arch/parisc/Kconfig.debug | |
| parent | a2bb214dcd1db862fdb6421e21f1cff0c3535162 (diff) | |
| download | linux-1bcdd8548286743e1d6b3d53c96a90c6da975620.tar.gz linux-1bcdd8548286743e1d6b3d53c96a90c6da975620.tar.bz2 linux-1bcdd8548286743e1d6b3d53c96a90c6da975620.zip | |
[PARISC] Add CONFIG_DEBUG_RODATA to protect read-only data
Add the parisc version of the "mark rodata section read only" patches.
Based on code from and Signed-off-by Arjan van de Ven
<arjan@infradead.org>, Ingo Molnar <mingo@elte.hu>, Andi Kleen <ak@muc.de>,
Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>.
Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc/Kconfig.debug')
| -rw-r--r-- | arch/parisc/Kconfig.debug | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/parisc/Kconfig.debug b/arch/parisc/Kconfig.debug index 8caaed187a1f..9166bd117267 100644 --- a/arch/parisc/Kconfig.debug +++ b/arch/parisc/Kconfig.debug @@ -11,4 +11,14 @@ config DEBUG_RWLOCK too many attempts. If you suspect a rwlock problem or a kernel hacker asks for this option then say Y. Otherwise say N. +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 TLB anymore. + If in doubt, say "N". + endmenu |