I had this same exact issue with this MB and ESXi.  That is the main reason I bought my SuperMicro board.

 

Anyway, the MB is from a Lenovo ThinkStation D20 (4158-AB7):  http://support.lenovo.com/en_US/product-and-parts/detail.page?DocID=PD005619

 

The MB has 2 onboard controllers:

 

00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller
01:00.0 RAID bus controller: Marvell Technology Group Ltd. MV64460/64461/64462 System Controller, Revision B (rev 01)

 

I am using the Intel controller for the boot drive and datastores (not passing through).  The Marvell card will be passed through to the unRAID VM for data drives.  Even though I have added the Marvell controller to /etc/grub.d/09_xen and updated grub...

 

XEN_HYPERVISOR_CMDLINE="xsave=1 cpufreq=xen:performance dom0_mem=4096M dom0_max_vcpus=2 dom0_vcpus_pin iommu=1"
XEN_LINUX_CMDLINE="console=tty0 xen-pciback.hide=(01:00.0)(09:00.0)"

 

...it is not passing through as you can see in the lspci -k:

 

01:00.0 RAID bus controller: Marvell Technology Group Ltd. MV64460/64461/64462 System Controller, Revision B (rev 01)
        Subsystem: Lenovo Device 1023
        Kernel driver in use: mvsas
        Kernel modules: mvsas

 

I know passthrough works as I was able to passthrough a NIC:

 

09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5754 Gigabit Ethernet PCI Express (rev 02)
        Subsystem: Lenovo Device 1023
        Kernel driver in use: pciback
        Kernel modules: tg3

 

Any ideas?

Do cards sometimes require an additional device passed through for it to be passed through?

Does some HW just refuse to be passed through?

Maybe a system or controller BIOS setting needs to be changed?

 

John

Fixed...thanks to grumpy as usual.

 

I just had to move xen-pciback to the beginning of the MODULES line and recompile:

 

MODULES="xen-pciback mvsas radeon libsas scsi_transport_sas ahci libahci libata ehci-hcd uhci-hcd ext2 ext4 vfat"

 

 

01:00.0 RAID bus controller: Marvell Technology Group Ltd. MV64460/64461/64462 System Controller, Revision B (rev 01)
        Subsystem: Lenovo Device 1023
        Kernel driver in use: pciback
        Kernel modules: mvsas

 

bigmama ~ # xl pci-assignable-list
0000:01:00.0
0000:09:00.0

 

John