On Wed, Jan 12, 2011 at 05:07:41PM +0900, 박은병 wrote:
> This is a soliloquy..:)
> 
> I found 3GB memory restriction for pv domU with PCI threads.
> and some bug reports
> 
> http://www.gossamer-threads.com/lists/xen/devel/187533
> 
> 
> I'm sorry for asking withoug pre-survey.
> 
> this problem was already resolved ?? :)

There is a patch for the 2.6.37 tree (and for the xl and xm tools)
that can fix this, but I am in process of reworking it.

If you really want it, get the patches from 

git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git devel/e820-hole
for the 2.6.37 Linux kernel.

And for the tool stack - see attached patch.

You need to define in your .xm file this attribute:
pci_hole=0xc0000

(or 1 to automatically try to guess - which might fail).