Re: Re: [Xen-devel] [PATCH 0/5][IA64][HVM] Windows crashdump support

[Tristan Gingold <tgingold@free.fr>]

On Tue, Jan 23, 2007 at 08:06:23AM +0000, Keir Fraser wrote:
> On 23/1/07 2:40 am, "Masaki Kanno" <kanno.masaki@jp.fujitsu.com> wrote:
> 
> > In the ia64 machine, there is an INIT switch. By pushing the
> > INIT switch, an INIT interruption is generated. The INIT
> > interruption triggers off when the Windows collects the
> > crashdump. (I attach a screenshot of the Windows crashdump.)
> 
> Does ia64 Windows generate a dump if you send it an NMI? That would be a
> more generic mechanism that would allow x86 HVM to share the same domctl or
> hvm_op. Otherwise we need a send_init hypercall for ia64 and a send_nmi
> hypercall for x86, or we need a more vague generic name like
> "trigger_dump_switch" (which actually is rather attractive now I think about
> it).
I support the feature too.

I think being able to post an NMI/INIT is a good feature.  It allows you
to test the feature if your bare hardware don't have it.

Maybe os-init is not the best name.
Maybe the balance between code in hypervisor (very small) and code in xm
(larger) is not very good, but difficule to improve !


Tristan.