Re: [PATCH] security_ops locking

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In reply to: David Wheeler: "Re: [PATCH] security_ops locking"
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Reply: James Morris: "Re: [PATCH] security_ops locking"
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chrisat_private

* David Wheeler (dwheelerat_private) wrote:
> James Morris said:
> 
>  > The patch below implements locking of for the security module
>  > registration interfaces, covering writing & testing of the 
> security_ops pointer.
> 
> This patch solves a DIFFERENT problem than the one I'm concerned about;
> it DOES NOT solve the problem I raised earlier if there are multiple
> CPUs which don't guarantee atomic pointer writes.

I think it does.  Look at the way parisc implements xchg().

thanks,
-chris
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