On 04/06/2010 03:38 PM, Jeremy Fitzhardinge wrote:

I'm seeing DMAR errors with current Xen-unstable, which weren't there in -rc8 (-rc9?): type=1403 audit(1270593095.214:3): policy loaded auid=4294967295 ses=4294967295

(XEN) [VT-D]iommu.c:821: iommu_fault_status: Primary Pending Fault

(XEN) [VT-D]iommu.c:796: DMAR:[DMA Write] Request device [00:1f.2] fault addr bf57b000, iommu reg = ffff82c3fff57000

(XEN) DMAR:[fault reason 05h] PTE Write access is not set

(XEN) print_vtd_entries: iommu = ffff83013fff3e80 bdf = 0:1f.2 gmfn = bf57b

(XEN) root_entry = ffff83013ff36000
(XEN) root_entry[0] = 13c6bb001
(XEN) context = ffff83013c6bb000
(XEN) context[fa] = 2_13fec4001
(XEN) l4 = ffff83013fec4000
(XEN) l4_index = 0
(XEN) l4[0] = 13fec1003
(XEN) l3 = ffff83013fec1000
(XEN) l3_index = 2
(XEN) l3[2] = 13ccbe003
(XEN) l2 = ffff83013ccbe000
(XEN) l2_index = 1fa
(XEN) l2[1fa] = 13cac3003
(XEN) l1 = ffff83013cac3000
(XEN) l1_index = 17b
(XEN) l1[17b] = 0
(XEN) l1[17b] not present

(XEN) [VT-D]iommu.c:796: DMAR:[DMA Write] Request device [00:1f.2] fault addr bf57a000, iommu reg = ffff82c3fff57000

(XEN) DMAR:[fault reason 05h] PTE Write access is not set

(XEN) print_vtd_entries: iommu = ffff83013fff3e80 bdf = 0:1f.2 gmfn = bf57a

(XEN) root_entry = ffff83013ff36000
(XEN) root_entry[0] = 13c6bb001
(XEN) context = ffff83013c6bb000
(XEN) context[fa] = 2_13fec4001
(XEN) l4 = ffff83013fec4000
(XEN) l4_index = 0
(XEN) l4[0] = 13fec1003
(XEN) l3 = ffff83013fec1000
(XEN) l3_index = 2
(XEN) l3[2] = 13ccbe003
(XEN) l2 = ffff83013ccbe000
(XEN) l2_index = 1fa
(XEN) l2[1fa] = 13cac3003
(XEN) l1 = ffff83013cac3000
(XEN) l1_index = 17a
(XEN) l1[17a] = 0
(XEN) l1[17a] not present

Device 0:1f.2 is my SATA controller. I haven't tried bisecting it or anything yet; I don't see any recent changes which are obviously relevant though.

 J
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