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Re: [Xen-users] Re: About swiotlb and " ...PCI-DMA: Out of SW-IOMMU..."error

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Frank Abel Cancio Bello <frankabel@xxxxxxxxxxxxxxxxxx>
  • Date: Thu, 06 Dec 2007 17:20:26 -0500
  • Delivery-date: Thu, 06 Dec 2007 14:33:04 -0800
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Add that my system have just 512Mb of ram. How do you exactly force dom0
use less than 2GB of ram? with the dom0-min-mem var in
the /etc/xen/xend-config.sxp conf file?

Frank Abel

On Thu, 2007-12-06 at 12:24 -0800, Shaun R. wrote:
> I have the same problem with xen 3.1 and adding swiotlb=128 to my grub conf 
> just caused xen to crash/panic.  Not only that but this problem killed my 
> dom0 root partition forcing all of the data into /lost+found which is oh so 
> much fun.  The only solution i've found to stopping this from happening is 
> to force dom0 to use less than 2GB of ram.  In my case i forced my dom0 to 
> use 1024MB of ram leaving the rest (around 15GB) on vacation.  Not a big 
> deal since before 3.1 i always forced dom0 to use only 1024MB of ram anyway 
> leaving the rest for the domU's.
> I'm running 3ware 9560 controllers btw too if it matters.
> ~Shaun
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