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

add dom0_mem=1024000 to the line with the xen.gz on it, that would allocate 1024MB of ram... If you only have 512 though total on your system you technically shouldnt be hitting this error according to that other post. I dont really understand whats happening but this has to be a bug considering it doesnt happen with a vanilla kernel.....


"Frank Abel Cancio Bello" <frankabel@xxxxxxxxxxxxxxxxxx> wrote in message news:1196979626.5691.13.camel@xxxxxxxxx
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.


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