[PATCH] x86-64: Add sys_unshare

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

diff --git a/arch/x86_64/Kconfig.debug b/arch/x86_64/Kconfig.debug
index 3ccf6f4..ea31b4c 100644 (file)
--- a/arch/x86_64/Kconfig.debug
+++ b/arch/x86_64/Kconfig.debug
@@ -2,12 +2,15 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-config INIT_DEBUG
-       bool "Debug __init statements"
-       depends on DEBUG_KERNEL
-       help
-         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
@@ -24,16 +27,6 @@ config IOMMU_DEBUG
         options. See Documentation/x86_64/boot-options.txt for more
         details.
 
-config KPROBES
-       bool "Kprobes"
-       depends on DEBUG_KERNEL
-       help
-         Kprobes allows you to trap at almost any kernel address and
-         execute a callback function.  register_kprobe() establishes
-         a probepoint and specifies the callback.  Kprobes is useful
-         for kernel debugging, non-intrusive instrumentation and testing.
-         If in doubt, say "N".
-
 config IOMMU_LEAK
        bool "IOMMU leak tracing"
        depends on DEBUG_KERNEL