Just thought I'd pass along an error I received this weekend after
upgrading two servers to 5.6. Both are HP Proliant DL380 servers
running 64-bit, but one is a G6 model and one is a G7. After the
upgrade and the reboot to the 2.6.18-238.9.1.el5 kernel, both servers
displayed the following error at boot:
"pci_mmcfg_init marking 256MB space uncacheable."
Some Googling found me the following link:
https://partner-bugzilla.redhat.com/show_bug.cgi?id=581933
There are apparently performance implications due to this issue.
Fortunately, the solution is simple: just boot with the kernel parameter
acpi_mcfg_max_pci_bus_num=on
If everyone is already familiar with this, please ignore. :-)
--
Best Regards,
Dave Windsor
Robert Bosch LLC
Team Leader, MES Database Infrastructure Group (AdP/TEF7.1)
4421 Highway 81 North
Anderson, SC 29621 USA
www.bosch.us
Tel: 1 (864) 260-8459
Fax: 1 (864) 260-8422
Dave.Windsor at us.bosch.com