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06-29-2011 11:39 AM
06-29-2011 11:39 AM
IOMMU support in BIOS of HP DL385 g7 servers
Hello,
Does HP DL385 g7 BIOS support IOMMU for xen virtualization?
There is no option in BIOS to activate it. Maybe I need a special BIOS version?
What I see in xen enabled kernels dmesg is like:
# --
root@xen:/xendomains# grep -i iommu dmesg-DL385g7-kernel*
dmesg-DL385g7-kernel2.6.38-7.txt:[ 0.000000] Please enable the IOMMU option in the BIOS setup
dmesg-DL385g7-kernel2.6.38-7.txt:[ 2.065763] PCI-DMA: using GART IOMMU.
dmesg-DL385g7-kernel2.6.38-7.txt:[ 2.065778] PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture
dmesg-DL385g7-kernel3.txt:[ 0.000000] Please enable the IOMMU option in the BIOS setup
dmesg-DL385g7-kernel3.txt:[ 6.722631] PCI-DMA: using GART IOMMU.
dmesg-DL385g7-kernel3.txt:[ 6.722651] PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture
# ---
Thank you in advance for any hints.
Regards,
Mark
ps. I have planned to order three further DL385 g7 servers depends on this IOMMU feature for HVMs
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06-29-2011 11:42 AM
06-29-2011 11:42 AM
Re: IOMMU support in BIOS of HP DL385 g7 servers
just dmesg for kernel 3.0
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06-29-2011 12:42 PM
06-29-2011 12:42 PM
Re: IOMMU support in BIOS of HP DL385 g7 servers
some more details:
when I try to boot "Linux xen 2.6.32-5-xen-amd64" kernel on HP DL385 g7 with iommu=force option I am getting Panic on CPU 0 and the sytem reboots - see message (on the console) below:
# ---
(XEN) HVM: ASIDs enabled
(XEN) HVM: SVM enabled
(XEN) HVM: Hardware Assited Paging detected
(XEN) AMD-Vi: IOMMU not found!
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) IOMMU setup failed. crash Xen for security purpose!
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...
# ---
The boot entries of my syslinux loader look like:
# ---
label xen40liveHiddenPCI
menu label xen40liveHiddenPCI
kernel /live/mboot.c32
append /live/xen_40_amd64.gz dom0_mem=2048M iommu=force --- /live/vmlinuz console=tty0 ro boot=live config locales=de_DE.UTF-8 utc=no timezone=Europe/Zurich keyboard-layouts=de username=ironm hostname=xen quiet xen-pciback.hide=(05:00.0)(05:00.1) --- /live/initrd.img
# ---
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07-04-2011 02:21 PM
07-04-2011 02:21 PM
Re: IOMMU support in BIOS of HP DL385 g7 servers
Seems like the option is missing in DL385 G7 and DL585 G7. May be need a BIOS update
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06-29-2012 08:58 AM
06-29-2012 08:58 AM
Re: IOMMU support in BIOS of HP DL385 g7 servers
Has anyone heard anything on this? I have the latest BIOS for the 385 G7 (A18 3/19/2012) and its still not there. This is a huge issue to be honest. If I am missing something please let me know.
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07-04-2013 07:28 AM
07-04-2013 07:28 AM
Re: IOMMU support in BIOS of HP DL385 g7 servers
See http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00191707/c00191707.pdf on page 38.