This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] 2.6.29-rc8 pv_ops dom0 BUG / unable to handle kernel pag

Pasi Kärkkäinen wrote:
On Sun, Mar 22, 2009 at 12:50:31AM +0200, Pasi Kärkkäinen wrote:
On Sat, Mar 21, 2009 at 10:16:52PM +0200, Pasi Kärkkäinen wrote:
Also, do you see this problem before you've started any other domains? Or does it only happen once you've run a domU (or only while a domU is running)?

I'm not running any other domains.. Only dom0 is running.

Steps to reproduce this BUG on my pv_ops dom0 testbox:

1) Reboot the box to pv_ops dom0 kernel
2) Login to dom0 via ssh
3) Start kernel compilation on dom0 (make bzImage && make modules)
4) Wait some minutes and pv_ops dom0 kernel BUGs

So no other domains has been or is running when this happens..

I'll try disabling CONFIG_HIGHPTE now, and see if that makes any difference.

CONFIG_HIGHPTE=y and pv_ops dom0 survives up for maybe 30 mins, and then
BUGs (during kernel compilation):

CONFIG_HIGHPTE=n and I get BUG during system startup when udev is started:

Starting udev: BUG: unable to handle kernel paging request at 70007823
IP: [<e30ce245>] pdc_common_ops+0x171/0xfffffcfe [sata_promise]
*pdpt = 000000005f781001 Oops: 0002 [#1] SMP So yeah.. with CONFIG_HIGHPTE=n it seems to happen when sata_promise is loaded.. What should I try next?

Actually it's not only sata_promise. I tried 2 more times with the
CONFIG_HIGHPTE=n pv_ops dom0 kernel:


BUG: unable to handle kernel paging request at a536462c
IP: [<e30f4278>] classes+0x688/0xfffffa30 [parport]
*pdpt = 000000005f759001 Oops: 0002 [#1] SMP

Hm, OK.  Something is clearly drastically amiss.  I'll try to repro.


Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>