Re: [Xen-devel] collecting info on platforms with VT-d BIOS problems

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Hello Allen,

My problem before Weidongs workarounds was that VT-D would be switched off due 
to RMRR base address > end address when using a pci-e graphics card which 
disables the IGD on my platform (Q45 chipset).
Since his workarounds this doesn't happen anymore though one warning remains.

So there are to issues:
- RMRR address range not in reserved memory base = 7f000000 end = 7effffff; 
iommu_inclusive_mapping=1 parameter may be needed.
- And as you see if it was included this RMRR is still invalid because the base 
address > end address (which was previously the cause that xen switched off 
vt-d alltogether, but this error isn't reported separately anymore)

I have attached:
- xm info output, that should satisfy (c)
- serial log booting with and without iommu_inclusive_mapping=1 option, this 
should satisfy (d)
- output lspci -vvvknn

Ad (a):
- Asus P5Q-EM DO
- Q45 intel chipset
- Q9400 intel processor
- Ati Radeon HD 4850 GPU

Ad (b):
- bios version (latest available): P5Q-EM DO 1102 BIOS, date 2009/06/05


Regards,

Sander





Saturday, January 23, 2010, 1:22:08 AM, you wrote:

> We would like to collect information on platforms that have problem with VT-d 
> PCI device passthrough using non-IGD PCI devices.  Note that IGD (integrated 
> display device) device passthrough code is still being worked on.

> If you have encountered  VT-d problems on a particular platform using latest 
> xen-unstable, please provide the following information so that we can work 
> with OEM's to get their BIOS's fixed:

>     (a) Platform details (OEM, Product/Model#,  Other identifying info)
>     (b) BIOS version/number
>     (c) Version of Xen with which failure is seen (if not the latest 
> xen-unstable)
>     (d) Specific error/failure details such as serial log

> Thanks!

> Allen






-- 
Best regards,
 Sander                            mailto:linux@xxxxxxxxxxxxxx

Attachment: lspci-vtd.txt
Description: Text document

Attachment: xen-serial-log.txt
Description: Text document

Attachment: xen-serial-log-iommu_inclusive_mapping.txt
Description: Text document

Attachment: xm-info-vtd.txt
Description: Text document

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