Re: [Xen-devel] Xen 4.2.0-rc4 bugs with GigaByte H77M-D3H + Core i7 3770

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.08.12 at 12:43, Javier Marcet <jmarcet@xxxxxxxxx> wrote:
> [    0.358278] DMAR:[DMA Read] Request device [00:02.0] fault addr 9fac7000
> [    0.358278] DMAR:[fault reason 06] PTE Read access is not set
> [    0.358286] DRHD: handling fault status reg 2
> [    0.358288] DMAR:[DMA Read] Request device [00:02.0] fault addr 9fac7000
> [    0.358288] DMAR:[fault reason 06] PTE Read access is not set
> [    0.358291] DMAR:[DMA Read] Request device [00:02.0] fault addr 9fac7000
> [    0.358291] DMAR:[fault reason 06] PTE Read access is not set
> [    0.358307] DRHD: handling fault status reg 3
> 
> Furthermore, later on, just after enabling the IOMMU, I get this:
> 
> [    0.328564] DMAR: No ATSR found
> [    0.328580] IOMMU 1 0xfed91000: using Queued invalidation
> [    0.328582] IOMMU: Setting RMRR:
> [    0.328589] IOMMU: Setting identity map for device 0000:00:1d.0
> [0x9de36000 - 0x9de52fff]
> [    0.328606] IOMMU: Setting identity map for device 0000:00:1a.0
> [0x9de36000 - 0x9de52fff]
> [    0.328617] IOMMU: Setting identity map for device 0000:00:14.0
> [0x9de36000 - 0x9de52fff]
> [    0.328625] IOMMU: Prepare 0-16MiB unity mapping for LPC
> [    0.328630] IOMMU: Setting identity map for device 0000:00:1f.0
> [0x0 - 0xffffff]

All of these messages shouldn't appear when running under Xen,
as it's the hypervisor, not the kernel to take care of the IOMMU(s).
The logs you had pointers to confirm this - are you sure the above
was seen when running under Xen?

Jan


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