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SubjectRe: [PATCH 01/17] arm: arch_ptrace clean-up
On Fri, Apr 24, 2009 at 05:07:32PM -0700, Roland McGrath wrote:
> This cleans up arch_ptrace() on arm to use the generic ptrace_request()
> for everything it can. This gets rid of the non-arch ptrace internals
> magic from the arch code.

It also changes the semantics a bit, and I don't buy the "it doesn't
matter" comments, especially in the PT_SINGLESTEP case. Having
PT_SINGLESTEP set the flag but later fail is not nice behaviour at all,
it means that, despite the ptrace call failing, the next time that the
task encounters a signal, it will enter single stepping mode.

Therefore, I believe this patch is wrong.

--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of:


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