Re: [Xen-devel] [PATCH-v2] xen: Don't callarch_trigger_all_cpu_backtrace in dom0(pvm)

From: Ian Campbell
Date: Tue Apr 09 2013 - 12:36:23 EST

On Mon, 2013-04-08 at 08:42 +0100, Jan Beulich wrote:
> >>> On 07.04.13 at 07:54, Zhenzhong Duan <zhenzhong.duan@xxxxxxxxxx> wrote:
> > nmi isn't supported in dom0, fallback to general all cpu backtrace code.
> Since when is sending NMIs not supported, and since when is this
> Dom0-specific? If you want to deal with this, you should do so
> properly: Special case sending NMIs in the respective Xen specific
> code (using VCPUOP_send_nmi), and carry this out in a way not
> dependent upon running (un)privileged.

You'd also need to implement the upcall support for receiving NMIs,
which IIRC isn't yet done for pvops.


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