Messages in this thread |  | | | Date | Mon, 14 Mar 2011 10:40:38 +0000 | | From | Russell King - ARM Linux <> | | Subject | Re: [PATCH] arm: cmpxchg syscall should data abort if page not write or not young |
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On Mon, Mar 14, 2011 at 06:28:36PM +0800, Po-Yu Chuang wrote: > From: Po-Yu Chuang <ratbert@faraday-tech.com> > > If the page to cmpxchg is user mode read only (not write) > or invalid (not young), we should simulate a data abort first.
No. If it is not young then it should be made young. Age is an effect of accesses. It's not a permission.
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