Re: [Xen-devel] big local array in routine in hypervisor

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

It's definitely not safe. Don't do it! The stack is only a few kilobytes and
needs to be shared with possibly multiple nested interrupt contexts.

 -- Keir

On 26/01/2009 22:41, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:

> Is it always safe to have a large local array in a routine
> in the hypervisor, say 2-3 pages (8k-12k) in size?  (I suppose
> that may be 32k-48k on ia64 since the code is arch-neutral.)
> Or is there some possibility the Xen stack will overflow?
> 
> If not always safe, is there any way to test to see if it safe
> or how large is safe?
> 
> Thanks,
> Dan
> 
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