[PATCH] x86_64: Fix get_cmos_time()

[powerpc.git] / arch / x86_64 / Kconfig.debug

diff --git a/arch/x86_64/Kconfig.debug b/arch/x86_64/Kconfig.debug
index e2c6e64..fcb06a5 100644 (file)
--- 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"