diff options
| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-06 00:12:04 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:36 -0800 |
| commit | 67df197b1a07944c2e0e40ded3d4fd07d108e110 (patch) | |
| tree | b29534a27b2c18e64c6b3d4cdc149de8978e38ba /arch/x86_64/Kconfig.debug | |
| parent | c728252c7a072628bd3932ff87943d1e12423359 (diff) | |
| download | linux-67df197b1a07944c2e0e40ded3d4fd07d108e110.tar.gz | |
[PATCH] x86/x86_64: mark rodata section read-only: x86-64 support
x86-64 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>
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/x86_64/Kconfig.debug')
| -rw-r--r-- | arch/x86_64/Kconfig.debug | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86_64/Kconfig.debug b/arch/x86_64/Kconfig.debug index e2c6e64a85ec2..fcb06a50fdd2c 100644 --- a/arch/x86_64/Kconfig.debug +++ b/arch/x86_64/Kconfig.debug @@ -9,6 +9,16 @@ config INIT_DEBUG Fill __init and __initdata at the end of boot. This helps debugging illegal uses of __init and __initdata after initialization. +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 IOMMU_DEBUG depends on GART_IOMMU && DEBUG_KERNEL bool "Enable IOMMU debugging" |