Re: [Xen-devel] Xen 4.1 regression - can't boot on 1TB anymore (Xen 4.0 could).

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 27.03.12 at 20:13, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
> With Xen 4.0 we could boot up dom0 with 1TB of memory. But with
> Xen 4.1 that is no longer the case. Any ideas of what might be the culprit?
> 
> Please see attached logs.

Is this with the same kernel? I suspect not, in particular because of

(XEN)  Phys-Mach map: ffffea0000000000->ffffea007e5acc80

vs

(XEN) Dom0 memory clipped to 130846720 pages

(the former suggesting a kernel making use of XEN_ELFNOTE_INIT_P2M,
i.e. a forward ported one based on ours, the latter suggesting one
that doesn't, e.g. pv-ops). If booting fails completely, I'd suppose
the clipping calculation might be off by a few pages. Does output look
the same with "sync_console"? If so, does "watchdog" allow you to
get a stack trace and register dump of where execution hangs?

I also suppose that the second kernel boots fine when you pass
dom0_mem= with a value below 400G.

Jan


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