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Re: [Xen-devel] Xen linux error message: PCI-DMA: Out of SW-IOMMU space for 65536 bytes at device 0000:02:01.0
- To: Stefan Berger <stefanb@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
- From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
- Date: Fri, 07 Sep 2007 19:42:29 +0100
- Delivery-date: Fri, 07 Sep 2007 11:43:02 -0700
- List-id: Xen developer discussion <xen-devel.lists.xensource.com>
- Thread-index: AcfxftetFkzYnl1yEdybXQAX8io7RQ==
- Thread-topic: [Xen-devel] Xen linux error message: PCI-DMA: Out of SW-IOMMU space for 65536 bytes at device 0000:02:01.0
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.
-- 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 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 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 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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