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Date:	Tue, 27 Oct 2009 14:33:58 -0400
From:	Steven Rostedt <>
To:	Suresh Siddha <>
Cc:	LKML <>, Ingo Molnar <>,
	"H. Peter Anvin" <>
Subject: Re: [PATCH] [GIT PULL] tracing: allow to change permissions for
 text with dynamic ftrace enabled

On Tue, 2009-10-27 at 11:20 -0800, Suresh Siddha wrote:

> Steven, Is it possible for dynamic ftrace to use the kernel identity
> mapping instead of the kernel text mapping for converting the tracing
> calls to nops etc.

Not sure what you mean by "kernel identity" mapping.

> That way, we can still retain large page mappings for kernel text, while
> allowing the text to be changed.
> I need to think through this to see if there are any subtle issues. What
> do you think?

Yeah, this is for now the quick fix. But I'm sure there can be better
changes to fix this.

-- Steve

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