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Re: [RFC] [PATCH 5/6] Kprobes: Single step the original instruction out-of-line

From: Christoph Hellwig <hch at infradead dot org>
To: Prasanna S Panchamukhi <prasanna at in dot ibm dot com>
Cc: linux-kernel at vger dot kernel dot org, systemtap at sources dot redhat dot com, akpm at osdl dot org, Andi Kleen <ak at suse dot de>, davem at davemloft dot net, suparna at in dot ibm dot com, richardj_moore at uk dot ibm dot com
Date: Tue, 9 May 2006 10:38:27 +0100
Subject: Re: [RFC] [PATCH 5/6] Kprobes: Single step the original instruction out-of-line
References: <20060509065455.GA11630@in.ibm.com> <20060509065917.GA22493@in.ibm.com> <20060509070106.GB22493@in.ibm.com> <20060509070508.GC22493@in.ibm.com> <20060509070911.GD22493@in.ibm.com> <20060509071204.GE22493@in.ibm.com>

On Tue, May 09, 2006 at 12:42:04PM +0530, Prasanna S Panchamukhi wrote:
> Even if the vma cannot be extended, then the instruction much be
> executed inline, by replacing the breakpoint instruction with the
> original instruction.

Patching pagecache content is not acceptable.  Just fail the probe
in this case.

References:
- [RFC] [PATCH 0/6] Kprobes: User-space probes support for i386
  - From: Prasanna S Panchamukhi
- Re: [RFC] [PATCH 1/6] Kprobes: Allow/deny exclusive write access to inodes
  - From: Prasanna S Panchamukhi
- Re: [RFC] [PATCH 2/6] Kprobes: Get one pagetable entry
  - From: Prasanna S Panchamukhi
- Re: [RFC] [PATCH 3/6] Kprobes: New interfaces for user-space probes
  - From: Prasanna S Panchamukhi
- Re: [RFC] [PATCH 4/6] Kprobes: Insert probes on non-memory resident pages
  - From: Prasanna S Panchamukhi
- Re: [RFC] [PATCH 5/6] Kprobes: Single step the original instruction out-of-line
  - From: Prasanna S Panchamukhi

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