xen-devel
Re: [Xen-devel] Xen linux error message: PCI-DMA: Out of SW-IOMMU space
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx wrote on 09/07/2007
02:42:29 PM:
> No, you simply don’t have a big enough swiotlb. The default is 2MB
> for a machine with less than 2GB of RAM, or 64MB for >2GB systems.
>
> You can change to e.g., a 128MB swiotlb by putting ‘swiotlb=128’
on
> you dom0 cmdline.
Not that I find this a good or intuitive solution,
but at least now the error messages have disappeared. Couldn't this swiotlb
grow automatically when needed?
Stefan
>
> -- Keir
>
> On 7/9/07 18:51, "Stefan Berger" <stefanb@xxxxxxxxxx>
wrote:
>
> One one of my machines running the linux 2.6.18 changes 195, I see
a
> lot of these errrors.
>
> Sep 7 13:14:22 test-11 kernel: PCI-DMA: Out of SW-IOMMU space
for
> 65536 bytes at device .&checktime(0000,02,01,':').0
> Sep 7 13:14:22 test-11 last message repeated 10 times
> Sep 7 13:14:25 test-11 kernel: PCI-DMA: Out of SW-IOMMU space
for
> 16384 bytes at device .&checktime(0000,02,01,':').0
> Sep 7 13:14:25 test-11 last message repeated 4 times
> Sep 7 13:14:25 ttest-11 kernel: PCI-DMA: Out of SW-IOMMU space
for
> 24576 bytes at device .&checktime(0000,02,01,':').0
>
> Was this patch
>
> http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00418.html
>
> supposed to solve this?
>
> Stefan
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