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

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 03/10/2013 18:55, "Andrew Cooper" <andrew.cooper3@xxxxxxxxxx> wrote:

> 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?

Sensible patches.

Acked-by: Keir Fraser <keir@xxxxxxx>

> ~Andrew



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