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Re: [Xen-devel] BUG: unable to handle kernel paging request - balloon_in

On Wed, May 04, 2011 at 07:23:21PM -0400, Scott Garron wrote:
> On 05/04/2011 06:16 PM, Konrad Rzeszutek Wilk wrote:
> >OK, will take a look at this tomorrow. BTW, what machine is this?

> Tyan Thunder K8S Pro S2882 motherboard (purchased sometime around
> April, 2004) BIOS version 3.09

OK, nothing really strange about it.

I don't have any hardware setup that would mirror yours, so I tried to
run under QEMU to have a similar E820. I got this

(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009f400 (usable)
(XEN)  000000000009f400 - 00000000000a0000 (reserved)
(XEN)  00000000000f0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000dabfd000 (usable)
(XEN)  00000000dabfd000 - 00000000dac00000 (reserved)
(XEN)  00000000fffc0000 - 0000000100000000 (reserved)
(XEN) System RAM: 3499MB (3583600kB) 
.. snip..
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  Xen: 0000000000000000 - 000000000009f000 (usable)
[    0.000000]  Xen: 000000000009f400 - 0000000000100000 (reserved)
[    0.000000]  Xen: 0000000000100000 - 00000000d0167000 (usable)
[    0.000000]  Xen: 00000000d0167000 - 00000000dabfd000 (unusable)
[    0.000000]  Xen: 00000000dabfd000 - 00000000dac00000 (reserved)
[    0.000000]  Xen: 00000000fec00000 - 00000000fec01000 (reserved)
[    0.000000]  Xen: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  Xen: 00000000fffc0000 - 0000000100000000 (reserved)
[    0.000000]  Xen: 0000000100000000 - 000000010aa96000 (usable)

which is close enough to be similar to your system. It's E820 stops
right at the 4GB mark, and then when Linux boots it considers that
whole region as balloon space.

And nothing.. I did not get any of those errors you got. Let me
play with this some more.

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