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Re: [Xen-devel] [PATCH 0/3] per_cpu() fixes

On 26/09/13 10:49, Andrew Cooper wrote:
> This patch series is two independent but related changes to the use of
> per_cpu() with offline pcpus.
> The first patch is a fix for use of get_cpu_idle_time() whereby toolstack
> hypercalls could cause an effective NULL structure dereference.
> The second patch is a forward looking fix to try and prevent similar issues in
> the future.  It causes uses of per_cpu() against an offline pcpu to cause a
> #GF rather than to try and dereference a very low address.
> The third patch is debugging code to demonstrate the effects of patch 2.
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> CC: Keir Fraser <keir@xxxxxxx>
> CC: Jan Beulich <JBeulich@xxxxxxxx>
> CC: Tim Deegan <tim@xxxxxxx>
> CC: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
> CC: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>

Ping?  Any thoughts at all?


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