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Re: [Xen-devel] Massive problems with 'PCI-DMA: Out of SW-IOMMU space fo

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Subject: Re: [Xen-devel] Massive problems with 'PCI-DMA: Out of SW-IOMMU space for XXX bytes [..]' with 3Ware controller
From: "Randy McAnally" <rsm@xxxxxxxxxxxxx>
Date: Mon, 28 Jan 2008 10:03:05 -0500
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Markus Schuster wrote:

> PCI-DMA: Out of SW-IOMMU space for 40960 bytes at device 0000:03:00.0
> 3w-9xxx: scsi0: ERROR: (0x06:0x001C): Failed to map scatter gather list.
> (03:00.0 is the 3Ware Controller)

Me too as well...any progress on this issue?

I notice that IO performance is notably slower than the stock RHEL kernel; 
about 1/2 overall write performance.  I can trigger the bug using DD or by 
copying disk images around.  All versions of Xen 3.1.x and 3.2.x are 

Randy McAnally
Fast Serv Networks, LLC
619-819-8252 x201
619-819-9443 fax

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