Re: [patch] mark text section read-only

[Keith Owens]

On Sat, 12 Nov 2005 11:34:55 -0500, 
Coywolf Qi Hunt <coywolf@xxxxxxxxx> wrote:
>+config DEBUG_ROTEXT
>+	bool "Write protect kernel text"
>+	depends on DEBUG_KERNEL
>+	help
>+	  Mark the kernel text as write-protected in the pagetables,
>+	  in order to catch accidental (and incorrect) writes to kernel text
>+	  area. This option will increase TLB pressure thus impact performance.
>+	  Note this may conflict with kprobes. If in doubt, say "N".

Also conflicts with kdb, kgdb, and any other kernel debugger that uses
software breakpoints.

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