Oracle Sun Fire X4800, Product Notes

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SLES11 with Xen Hangs When Many PCIe ExpressModule Cards Are Installed (CR 6917397)
SLES11 with Xen Hangs When Many PCIe ExpressModule
Cards Are Installed (CR 6917397)
SUSE Linux Enterprise Server 11 (SLES11) hangs with
udev
in
dom0
when the number of
interrupt resources required by I/O devices exceeds a threshold. This is most likely in systems
where many PCIe ExpressModule cards are installed.
Workaround
1. In the GRUB configuration, set
pci=nomsi
.
2. Boot a non-Xen kernel.
3. Edit
/boot/grub/menu.lst
.
4. Add the following text to the Xen kernel init line stanza:
pci=nomsi
For example:
title Xen -- SUSE Linux Enterprise Server 11 - 2.6.27.19-5
root (hd0,1)
kernel /boot/xen.gz
module /boot/vmlinuz-2.6.27.19-5-xen
nn.nn.n ... other text, parameters, etc
pci=nomsi
module /boot/initrd-2.6.27.19-5-xen
or
Use YAST to add
pci=nomsi
as a boot parameter.
5. Reboot the Xen kernel.
Linux Issues 59