[Xen-users] Marvell, IOMMU/VT-d, and pci-phantom

[Erlend Hoel <erlend.hoel@xxxxxxxxx>]

Hi, guys.

I've been trying to use the pci-phantom command line options to xen so
as to work around the hardware issue with the Marvell 88SE91xx SATA
controllers in IOMMU ([Intel:] VT-d) mode, but I cannot seem to get my
head around it.  From having had a glance here:

    http://xenbits.xen.org/docs/unstable/misc/xen-command-line.html

and in particular the syntax described as such:

    pci-phantom

        =[<seg>:]<bus>:<device>,<stride>

I decided to try and work out the correct values for this command.
Being no expert (nor even an adept) when it comes to PCI bus
addressing, I did this:

    mybox:~$ lspci | grep -i marvell
    06:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9172
SATA 6Gb/s Controller (rev 11)
    0a:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9172
SATA 6Gb/s Controller (rev 11)

and then experimented like so:

    /boot/xen-4.3-unstable.gz placeholder pci-phantom=06:00.0
pci-phantom=0a:00.0
    /boot/xen-4.3-unstable.gz placeholder pci-phantom=06:00,0
pci-phantom=0a:00,0
    /boot/xen-4.3-unstable.gz placeholder pci-phantom=0:06:00,0
pci-phantom=0:0a:00,0
    /boot/xen-4.3-unstable.gz placeholder pci-phantom=0:06:00,0
pci-phantom=1:0a:00,0

and finally, on the off chance I'd glean something useful doing this:

   mybox:~$ strings /boot/xen-syms-4.3-unstable | grep -i phantom
   <3>PCI phantom %04x:%02x:%02x.%u
   pci-phantom

I even tried this:

    /boot/xen-4.3-unstable.gz placeholder pci-phantom=0000:06:00.0
pci-phantom=0000:0a:00.0

All to no avail.  I've Googled my smallish head off and I've tried to
scour this list to see if anybody else has been trying out this
option, but I can't seem to find anything.

And so, hopefully, I ask:  Can anyone see what I'm doing wrong?  Has
anyone gotten the pci-phantom option to work?  Am I just using the
wrong syntax?

Regards,
Erlend

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxx
http://lists.xen.org/xen-users