Re: [Xen-devel] Xen 4.2.1 boot failure with IOMMU enabled

[povder <povder@xxxxxxxxx>]

>> 2013/2/13 Jan Beulich <JBeulich@xxxxxxxx>:
>>> I wonder how native Linux with
>>> IOMMU enabled does in that situation...
>>>

Here is full boot log of latest centos stable kernel:
http://pastebin.com/raw.php?i=RnrMFXqf
I had to set amd_iommu=on and amd_iommu_dump (to dump ACPI table) -
undocumented kernel options.

Interesting part in my opinion:
calling  pci_iommu_init+0x0/0x21 @ 1
AMD-Vi: device: 00:00.2 cap: 0040 seg: 0 flags: 3e info 1300
AMD-Vi:        mmio-addr: 00000000f6000000
AMD-Vi:   DEV_SELECT_RANGE_START         devid: 00:00.0 flags: 00
AMD-Vi:   DEV_RANGE_END          devid: 00:00.2
AMD-Vi:   DEV_SELECT                     devid: 00:04.0 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 06:00.0 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 00:06.0 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 05:00.0 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 00:07.0 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 04:00.0 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 00:0b.0 flags: 00
AMD-Vi:   DEV_SELECT_RANGE_START         devid: 03:00.0 flags: 00
AMD-Vi:   DEV_RANGE_END          devid: 03:00.1
AMD-Vi:   DEV_SELECT                     devid: 00:0d.0 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 02:00.0 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 00:11.0 flags: 00
AMD-Vi:   DEV_SELECT_RANGE_START         devid: 00:12.0 flags: 00
AMD-Vi:   DEV_RANGE_END          devid: 00:12.2
AMD-Vi:   DEV_SELECT_RANGE_START         devid: 00:13.0 flags: 00
AMD-Vi:   DEV_RANGE_END          devid: 00:13.2
AMD-Vi:   DEV_SELECT                     devid: 00:14.0 flags: d7
AMD-Vi:   DEV_SELECT                     devid: 00:14.1 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 00:14.2 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 00:14.3 flags: 00
AMD-Vi:   DEV_SELECT                     devid: 00:14.4 flags: 00
AMD-Vi:   DEV_ALIAS_RANGE                devid: 01:00.0 flags: 00 devid_to: 
00:14.4
AMD-Vi:   DEV_RANGE_END          devid: 01:1f.7
AMD-Vi:   DEV_SELECT                     devid: 00:14.5 flags: 00
AMD-Vi:   DEV_SELECT_RANGE_START         devid: 00:16.0 flags: 00
AMD-Vi:   DEV_RANGE_END          devid: 00:16.2
  alloc irq_desc for 55 on node 0
  alloc kstat_irqs on node 0
IOAPIC[1]: Set routing entry (7-31 -> 0x79 -> IRQ 55 Mode:1 Active:1)
pci 0000:00:00.2: PCI INT A -> GSI 55 (level, low) -> IRQ 55
  alloc irq_desc for 56 on node 0
  alloc kstat_irqs on node 0
pci 0000:00:00.2: irq 56 for MSI/MSI-X
AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40
AMD-Vi: Initialized for Passthrough Mode
AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40
initcall pci_iommu_init+0x0/0x21 returned 0 after 569797 usecs

I don't see 06:00.1 device in IOMMU enabling process on which Xen crashes.

lspci output: http://pastebin.com/raw.php?i=3wpKPQT9

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