<div dir="ltr"><div>I'm updating some components of the server's firmware (including EFI) and will reboot in a few more minutes. I will let you know how things will be.<br><br></div>Thanks<br><br>Paulo<br><div class="gmail_extra"><br><div class="gmail_quote">2015-02-02 23:22 GMT-02:00 Steven Haigh <span dir="ltr"><<a href="mailto:netwiz@crc.id.au" target="_blank">netwiz@crc.id.au</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 03/02/15 12:11, Paulo Fessel wrote:<br>
> Hello, gents.<br>
><br>
> Today I was trying to set up Xen according to the instructions on Xen<br>
> made easy webpage (<a href="http://xen.crc.id.au/support/guides/install/" target="_blank">http://xen.crc.id.au/support/guides/install/</a>) using<br>
> CentOS 6.6 as basis for the installation on an IBM Xseries 3550 M3, with<br>
> 12 GB RAM, 2 processor packages (12 HT cores). No problems installing<br>
> CentOS either on EFI or legacy mode; OTOH I have not managed to boot Xen<br>
> neither on EFI nor in legacy mode.<br>
><br>
> When in EFI mode, grub just can't boot Xen, more or less just like what<br>
> is described on<br>
> <a href="https://lists.wireless.org.au/pipermail/kernel-xen/2015-January/000430.html" target="_blank">https://lists.wireless.org.au/pipermail/kernel-xen/2015-January/000430.html</a><br>
> ("error 13: invalid or unsupported executable format"), except that I<br>
> don't get the error message (probably to EFI graphic driver issues).<br>
> Otherwise, the result is very much the same: when I press any key I'm<br>
> taken back into the Grub boot menu. The only kernels I get to boot on an<br>
> EFI installation are the standard CentOS ones.<br>
<br>
</span>Yeah - right now I don't have anything that will boot with an EFI bios<br>
for testing. As such, I've been unable to verify if / what / how things<br>
should proceed and be packaged.<br>
<br>
The Xen 4.5.0 packages may work when I get to do some testing on them<br>
using EFI to boot - but I still don't have any EFI hardware to test with<br>
- as such it may well be at a 'builds & packages but untested' status.<br>
<br>
Donations of EFI kit welcome :)<br>
<span class=""><br>
> After a complete reinstallation using now the legacy mode boot, I get to<br>
> boot the Xen hypervisor; however, by the time the boot is complete (and<br>
> I should say, after the NIC card is activated) I get the following message:<br>
<br>
</span>I would expect that legacy mode booting would work properly.<br>
<span class=""><br>
> /Uhhuh. NMI received for unknown reason 3d on CPU 0.<br>
> Dazed and confused, but trying to continue<br>
> Do you have a strange power saving mode enabled?<br>
><br>
> /And then the system reboots. I have no time to logging in and check the<br>
> actual error messages; I can't see nothing on syslog related to the<br>
> reboot, or even related to the boot of Dom0. This behavior is somewhat<br>
> similar to a report I've seen on XenServer.org<br>
> (<a href="https://bugs.xenserver.org/browse/XSO-195" target="_blank">https://bugs.xenserver.org/browse/XSO-195</a>); however, setting<br>
> "nmi=ignore" does not solve the issue, just prevents the message to<br>
> appear on system console. Disabling HT also does not solve the problem.<br>
><br>
> The entries for grub seem to be in the correct places, and in legacy<br>
> mode Dom0 is actually booted, but does not survive. Any hints?<br>
<br>
</span>I wonder if this is a BIOS bug? Is there an updated bios that can be<br>
applied to that system?<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Steven Haigh<br>
<br>
Email: <a href="mailto:netwiz@crc.id.au">netwiz@crc.id.au</a><br>
Web: <a href="http://www.crc.id.au" target="_blank">http://www.crc.id.au</a><br>
Phone: (03) 9001 6090 - 0412 935 897<br>
<br>
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<br></blockquote></div><br></div></div>