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xen-tools
Re: [Xen-tools] [PATCH] An example console driver using the store
On 9 Aug 2005, at 11:54, Rusty Russell wrote:
I'd far prefer to have a __HYPERVISOR_panic_message hcall which copied
up to 80 chars into a per-domain buffer that can be queried from dom0.
The console driver would presumably use this (once) on catastrophic
failure, and could be useful for other similar things (panic?).
Having something like that *as well* would be useful and trivial to
add, and give a little more diagnostic info on why a domain crashed,
but I think a simple early console is itself important enough to
sacrifice some clean lines.
If you want multiple consoles you'll need a different layout anyway.
On
something that isn't a physical machine that seems a strange thing to
do
AFAICT.
I think some people did ask for it (not the same as *needing* it, of
course :-) ). However, it would be good if the chosen layout didn't
preclude multiple consoles per domU in future. I'm certainly not
proposing it for 3.0 though.
-- Keir
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