[Xen-bugs] [Bug 1608] New: [VT-d]Xen crash when booting guest with device assigned and Myricom driver loaded in Dom0

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1608

           Summary: [VT-d]Xen crash when booting guest with device assigned
                    and Myricom driver loaded in Dom0
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: jiajun.xu@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32e
Guest Arch (ia32/ia32e/IA64): ia32e
Guest OS Type (Linux/Windows): Linux
Change Set: 21237
Hardware: Westmere-EP

xen-changeset:   21237:a167ea374f26

pvops git: 
commit a3e7c7b82c09450487a7e7f5f47b165c49474fd4
Merge: f3d5fe8... a47d360...
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

ioemu git: 
commit b5160622517fb2d16d0836172a2e34633c9d94bf
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Tue Apr 13 12:07:33 2010 +0100


Bug detailed description:
--------------------------
The issue is after loading myricom driver, then do guest vtd device assignment
will cause xen crash, behavior is like " queue invalidate wait descriptor was
not executed".

reproduce steps changed:
1. Install xen 21237
2. boot to dom0 and load myri10ge driver, then hide one pci device(a Intel NIC)
3. boot one guest with pci device assigned
4. Xen will crash

(XEN) HVM2: int13_harddisk: function 02, ELDL out of range 8e
(XEN) HVM2: int13_harddisk: function 41, ELDL out of range 8f
(XEN) HVM2: int13_harddisk: function 02, ELDL out of range 8f
(XEN) stdvga.c:151:d2 leaving stdvga
(XEN) vlapic.c:682:d2 Local APIC Write to read-only register 0x30
(XEN) vlapic.c:682:d2 Local APIC Write to read-only register 0x20
(XEN) vlapic.c:682:d2 Local APIC Write to read-only register 0x20
(XEN) irq.c:243: Dom2 PCI link 0 changed 5 -> 0
(XEN) irq.c:243: Dom2 PCI link 1 changed 10 -> 0
(XEN) irq.c:243: Dom2 PCI link 2 changed 11 -> 0
(XEN) irq.c:243: Dom2 PCI link 3 changed 5 -> 0
(XEN) irq.c:306: Dom2 callback via changed to PCI INTx Dev 0x03 IntA
(XEN) [VT-D]iommu.c:837: iommu_fault_status: Invalidation Time-out Error
(XEN) DMAR_IQA_REG = 13ff34002
(XEN) DMAR_IQH_REG = 4a0
(XEN) DMAR_IQT_REG = 4a0
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 16:
(XEN) queue invalidate wait descriptor was not executed
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...
(XEN) Resetting with ACPI MEMORY or I/O RESET_REG.


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