Messages in this thread | | | Date | Fri, 09 Feb 2007 12:49:06 -0800 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH 1/10] lguest: Don't rely on last-linked fallthru when no paravirt handler |
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Rusty Russell wrote: > If we make it thought early_fault, this will do just that. > > Given this is a "never happens" situation, however... if you're actually > under Xen or lguest, you won't make it that far (lguest, at least, will > kill you on the cr2 load in early_fault, but it doesn't matter because > we won't get anywhere with early_printk anyway). > > Actually, if we did BUG() here at least lguest would print something... > I wonder what Xen would do...
Xen would print a complete register dump and backtrace. There's not a lot else you can do here; you could try early_printk, but if we're in a strange virtual environment, there may be no device on which the output could appear.
J
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