From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top
	of Ubuntu 9.04 Server + Serial logs 4097, 4096 on F11
Date: Fri, 11 Sep 2009 08:26:06 -0400
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To: Boris Derzhavets <bderzhavets@yahoo.com>
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On Wed, Sep 09, 2009 at 11:51:56PM -0700, Boris Derzhavets wrote:
> Done.

Thank you.

The issue looks to be double allocating the swiotlb, which definitly is a no-no.

[    0.000000] PCI-DMA: Using Xen software bounce buffering for IO (Xen-SWIOTLB)

[    0.000000] Placing 64MB Xen software IO TLB between ffff880020000000 - ffff880024000000

[    0.000000] Xen software IO TLB at phys 0x20000000 - 0x24000000

[    0.000000] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)

[    0.000000] Placing 64MB software IO TLB between ffff88002b95c000 - ffff88002f95c000

[    0.000000] software IO TLB at phys 0x2b95c000 - 0x2f95c000

Let me get a 8GB machine and figure out what is happening.