[Xen-devel] New DMAR errors in Xen 4.1

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

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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