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Re: [Xen-devel] Re: how to handle paged hypercall args?
| To: | Olaf Hering <olaf@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Re: how to handle paged hypercall args? |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Fri, 03 Dec 2010 06:13:43 -0800 |
| Cc: | Patrick Colp <pjcolp@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx> |
| Delivery-date: | Fri, 03 Dec 2010 06:15:35 -0800 |
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| Thread-topic: | [Xen-devel] Re: how to handle paged hypercall args? |
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On 03/12/2010 01:03, "Olaf Hering" <olaf@xxxxxxxxx> wrote: > in my testing the BUG_ON in __prepare_to_wait() triggers, 1500 is too > small. I changed it to 4096 - (4*sizeof(void*)) to fix it for me. > 3K would be enough as well. > How large can the stack get, is there an upper limit? It can get pretty deep with nested interrupts. I wouldn't expect a guest's hypercall stack to get very deep at all. Send me a BUG_ON() backtrace. That said, making the saved-stack area bigger isn't really a problem. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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