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xen-devel
Re: [Xen-devel] 4.0.0 rc2: possible bugs
On Tue, Feb 02, 2010 at 10:12:21PM +1100, Yasir Assam wrote:
> I built rc2 and used the pvops kernel pulled from git for dom0 (make
> linux-2.6-pvops-build).
>
> dom0 runs much slower than the the vanilla kernel (without xen), and the
> system as a whole, including the domUs I'm running, seems sluggish.
>
> More of a concern is that I'm getting random segfaults in the domUs. I
> have 2 domUs running: one using the 2.6.18-xen (built for 3.4.2), and
> another using kernel.org 2.6.32.7. I can't be sure it's not a hardware
> problem (as I've also upgraded my MB) but both the RAM (tested with
> Memtest86) and the HD (tested with the WD diagnostic tool) seem ok.
>
> Here's a sample of the domU segfaults (I can't reproduce them - they're
> random):
>
> gnome-panel[3232]: segfault at 7f5264a27390 ip 00007f5263a8205d sp
> 00007fff74ce9630 error 4 in libc-2.10.2.so[7f5263a11000+14a000]
>
> sshd[6373]: segfault at 000000ffadffd8ff rip 000000ffadffd8ff rsp
> 00007fffb61abab8 error 14
>
> At one point I was using the dom0 kernel for one of the domUs and that
> crashed a few times, so I switched to kernel.org's 2.6.32.7
>
> The domU using 2.6.18-xen has always been rock-solid before under 3.4.2
> and earlier (it uses Debian Stable).
>
> Let me know if you want log/config files.
>
Is your pv_ops dom0 kernel 32bit? Is your kernel.org 2.6.32.7 kernel 32bit?
If yes, do you have CONFIG_HIGHPTE=y in .config?
-- Pasi
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