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List:       xen-users
Subject:    Re: [Xen-users] [Xen-API] XCP 1.6 beta Ram restriction for pci passthrough to pv Ubuntu 12.04 templa
From:       Pasi =?iso-8859-1?Q?K=E4rkk=E4inen?= <pasik () iki ! fi>
Date:       2012-10-28 13:35:44
Message-ID: 20121028133544.GY8912 () reaktio ! net
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On Wed, Oct 24, 2012 at 06:41:39PM +0200, Markus Rhonheimer wrote:
> Hi,
> 
> I use XCP 1.6.06 with a Ubuntu 12.04 64bit pv domU created with the template \
> through xencenter 6.1. I also used this command on xcp: xe vm-param-set \
> other-config:pci=0/0000:00:1f.2 uuid=d6eb559e-af70-6f8e-d10f-62fc9f73db89 which \
> passes a "SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family \
> SATA AHCI Controller (rev 05)" through to the domU. extlinux boot configuration has \
> the passthrough option. After booting the domU lspci shows the passed through \
> device but none of the attached HDDs are visible. This message can be seen within \
> dmesg: 

<snip>

> 
> The domU has about 8GB of Ram and therefore this bug seems to apply:
> 
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1673
> 
> This report mentions a more detailed thread at:
> 
> http://www.gossamer-threads.com/lists/xen/devel/187533
> 
> These are further informations about the host:
> 
> 

<snip>
 
> The kernel version of the Ubuntu domU is:
> 
> 3.2.0-32-generic
> 
> I would appreciate any help. 
> Thanks in advance
> 

Linux 3.2.0 does not support PCI passthru with >3G of RAM.
The issues is fixed in xen-pcifront driver in later kernel versions.

-- Pasi


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