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Re: [Xen-devel] big local array in routine in hypervisor
| To: | Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, "Xen-Devel (E-mail)" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] big local array in routine in hypervisor |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Mon, 26 Jan 2009 23:23:53 +0000 |
| Cc: | |
| Delivery-date: | Mon, 26 Jan 2009 15:24:07 -0800 |
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| Thread-topic: | [Xen-devel] big local array in routine in hypervisor |
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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 > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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