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Re: [Xen-devel] Crashing Xen

  • To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxxx>
  • From: Jacob Gorm Hansen <jacob@xxxxxxxx>
  • Date: Wed, 07 Jan 2004 15:56:35 +0100
  • Delivery-date: Wed, 07 Jan 2004 14:57:24 +0000
  • List-id: List for Xen developers <xen-devel.lists.sourceforge.net>

On Tue, 2004-01-06 at 19:03, Keir Fraser wrote:
> > hi,
> > 
> Hmmm... well, I was reasonably careful to ensure that there is sanity
> checking within Xen when building a domain to ensure that the domain
> cannot crash the whole machine. This may not be perfect, however, and
> xc_linux_build runs with enough privilege to hose the machine :-( We
> want to look at making domain building require fewer privileges
> sometime soon.

Does Xen use the start_info (passed in ctxt->esi) for anything (such as
setting up CR3), or is this value just passed on to the domain? Is
passing bogus start_info a problem for Xen?

If not, what is the state of CR3 and paging when the domain boots?


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