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Re: [Xen-devel] Trying to pass-through Intel graphics device - causes a xen panic

  • To: "Han, Weidong" <weidong.han@xxxxxxxxx>
  • From: Tom Rotenberg <tom.rotenberg@xxxxxxxxx>
  • Date: Thu, 24 Sep 2009 16:07:10 +0300
  • Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Thu, 24 Sep 2009 06:07:39 -0700
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Hi,

Thanks for your relpy.
Do u have any estimation to when those patches will be released?

BTW  does it work in XCI? i saw some IGD PT related code there...

Tom

On Thu, Sep 24, 2009 at 4:38 AM, Han, Weidong <weidong.han@xxxxxxxxx> wrote:
> Hi Tom,
>
> IGD passthrough is not supported on xen-unstable yet. We are working on it, 
> will send out the patches in near future.
>
> Regards,
> Weidong
>
> Tom Rotenberg wrote:
>> Hi,
>>
>> I tried to pass-through the 00:02.0 & 00:02.1 devices (Intel
>> integrated graphics device) on a Lenovo T500, using the latest
>> xen-unstable, and i got a xen panic.
>> Here are the last lines of the console log:
>> "
>> .....
>> (XEN) [VT-D]iommu.c:1296:d0 domain_context_unmap:PCI: bdf = 0:2.0
>> (XEN) [VT-D]iommu.c:716: iommu_page_fault: iommu->reg =
>> ffff828bfff56000 (XEN) [VT-D]iommu.c:685: iommu_fault_status: Fault
>> Overflow (XEN) [VT-D]iommu.c:688: iommu_fault_status: Primary Pending
>> Fault (XEN) [VT-D]iommu.c:670: iommu_fault:DMA Write: 0:2.0 addr 0
>> REASON 2 iommu->reg = ffff828bfff56000
>> (XEN) [VT-D]iommu.c:1182:d0 domain_context_mapping:PCI: bdf = 0:2.0
>> (XEN) print_vtd_entries: iommu = ffff83007c4bd0d0 bdf = 0:2:0 gmfn = 0
>> (XEN)     root_entry = ffff83007c4ce000
>> (XEN)     root_entry[0] = 78910001
>> (XEN)     context = ffff830078910000
>> (XEN)     context[10] = 0_0
>> (XEN)     ctxt_entry[10] not present
>> (XEN) [VT-D]iommu.c:1182:d0 domain_context_mapping:PCI: bdf = 0:2.0
>> (XEN) [VT-D]io.c:280:d0 VT-d irq bind: m_irq = 37 device = 5 intx = 0
>> (XEN) [VT-D]iommu.c:1296:d0 domain_context_unmap:PCI: bdf = 0:2.1
>> (XEN) [VT-D]iommu.c:716: iommu_page_fault: iommu->reg =
>> ffff828bfff56000 (XEN) [VT-D]iommu.c:685: iommu_fault_status: Fault
>> Overflow (XEN) [VT-D]iommu.c:688: iommu_fault_status: Primary Pending
>> Fault (XEN) [VT-D]iommu.c:1182:d0 domain_context_mapping:PCI: bdf =
>> 0:2.1 (XEN) [VT-D]iommu.c:670: iommu_fault:DMA Write: 0:2.0 addr
>> ffffff000
>> REASON 5 iommu->reg = ffff828bfff56000
>> (XEN) print_vtd_entries: iommu = ffff83007c4bd0d0 bdf = 0:2:0 gmfn =
>> ffffff (XEN)     root_entry = ffff83007c4ce000
>> (XEN)     root_entry[0] = 78910001
>> (XEN)     context = ffff830078910000
>> (XEN)     context[10] = 201_75131001
>> (XEN)     l3 = ffff830075131000
>> (XEN)     l3_index = 3f
>> (XEN)     l3[3f] = 0
>> (XEN)     l3[3f] not present
>> (XEN) [VT-D]iommu.c:716: iommu_page_fault: iommu->reg =
>> ffff828bfff56000 (XEN) [VT-D]iommu.c:685: iommu_fault_status: Fault
>> Overflow (XEN) [VT-D]iommu.c:688: iommu_fault_status: Primary Pending
>> Fault (XEN) [VT-D]iommu.c:670: iommu_fault:DMA Write: 0:2.0 addr
>> ffffff000
>> REASON 5 iommu->reg = ffff828bfff56000
>> (XEN) print_vtd_entries: iommu = ffff83007c4bd0d0 bdf = 0:2:0 gmfn =
>> ffffff (XEN)     root_entry = ffff83007c4ce000
>> (XEN)     root_entry[0] = 78910001
>> (XEN)     context = ffff830078910000
>> (XEN)     context[10] = 201_75131001
>> (XEN)     l3 = ffff830075131000
>> (XEN)     l3_index = 3f
>> (XEN)     l3[3f] = 0
>> (XEN)     l3[3f] not present
>> (XEN) [VT-D]iommu.c:716: iommu_page_fault: iommu->reg =
>> ffff828bfff56000 (XEN) [VT-D]iommu.c:685: iommu_fault_status: Fault
>> Overflow (XEN) [VT-D]iommu.c:688: iommu_fault_status: Primary Pending
>> Fault (XEN) [VT-D]iommu.c:670: iommu_fault:DMA Write: 0:2.0 addr
>> ffffff000
>> REASON 5 iommu->reg = ffff828bfff56000
>> (XEN) print_vtd_entries: iommu = ffff83007c4bd0d0 bdf = 0:2:0 gmfn =
>> ffffff (XEN)     root_entry = ffff83007c4ce000
>> (XEN)     root_entry[0] = 78910001
>> (XEN)     context = ffff830078910000
>> (XEN)     context[10] = 201_75131001
>> (XEN)     l3 = ffff830075131000
>> (XEN)     l3_index = 3f
>> (XEN)     l3[3f] = 0
>> (XEN)     l3[3f] not present
>> (XEN) [VT-D]iommu.c:716: iommu_page_fault: iommu->reg =
>> ffff828bfff56000 (XEN) [VT-D]iommu.c:685: iommu_fault_status: Fault
>> Overflow (XEN) [VT-D]iommu.c:688: iommu_fault_status: Primary Pending
>> Fault (XEN) [VT-D]iommu.c:670: iommu_fault:DMA Write: 0:2.0 addr
>> ffffff000
>> REASON 5 iommu->reg = ffff828bfff56000
>> (XEN) print_vtd_entries: iommu = ffff83007c4bd0d0 bdf = 0:2:0 gmfn =
>> ffffff (XEN)     root_entry = ffff83007c4ce000
>> (XEN)     root_entry[0] = 78910001
>> (XEN)     context = ffff830078910000
>> (XEN)     context[10] = 201_75131001
>> (XEN)     l3 = ffff830075131000
>> (XEN)     l3_index = 3f
>> (XEN)     l3[3f] = 0
>> (XEN)     l3[3f] not present
>> (XEN) Assertion '(sp == 0) || (peoi[sp-1].vector < vector)' failed at
>> irq.c:749 (XEN) ----[ Xen-3.5-unstable  x86_64  debug=y  Not tainted
>> ]---- (XEN) CPU:    0
>> (XEN) RIP:    e008:[<ffff828c801534ad>] do_IRQ+0x2c3/0x690
>> (XEN) RFLAGS: 0000000000010046   CONTEXT: hypervisor
>> (XEN) rax: 00000000000000c0   rbx: ffff83007c080a80   rcx:
>> ffff828c8024c6c0 (XEN) rdx: 0000000000000001   rsi: 00000000000000c0
>> rdi: 0000000000000001 (XEN) rbp: ffff828c802d7d18   rsp:
>> ffff828c802d7c78   r8:  0000000000000002 (XEN) r9:  0000ffff0000ffff
>> r10: 00ff00ff00ff00ff   r11: 0f0f0f0f0f0f0f0f (XEN) r12:
>> 0000000000000014   r13: ffff828c802d7d28   r14: ffff83007c0dac50
>> (XEN) r15: ffff83007c4bcb60   cr0: 000000008005003b   cr4:
>> 00000000000026f0 (XEN) cr3: 000000007aaf9000   cr2: 0000000000d51550
>> (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e010   cs: e008
>> (XEN) Xen stack trace from rsp=ffff828c802d7c78: (XEN)
>> 0000000000000004 0000000000000004 ffff8300751311f8 ffff830075131000
>> (XEN)    0000000000000014 ffff83007c080ab4 00000014802d7cf8
>> ffff828c8013ad01 (XEN)    000000008011be55 0000000000000000
>> ffff83007c080a80 0000000000000086 (XEN)    ffff828c802d7cf8
>> ffff828c8011be30 ffff83007c4bd108 0000000000000002 (XEN)
>> 0000000000000001 ffff828c80168374 ffff828c802d7e00 ffff83007c4bcb60
>> (XEN)    00007d737fd282b7 ffff828c8014cb56 ffff83007c4bcb60
>> ffff828c802d7e00 (XEN)    ffff828c80168374 0000000000000001
>> ffff828c802d7df0 0000000000000002 (XEN)    0f0f0f0f0f0f0f0f
>> 00ff00ff00ff00ff 0000ffff0000ffff 0000000000000002 (XEN)
>> 0000000000000000 0000000000000001 ffff828c802ea700 ffff828c8024ca20
>> (XEN)    0000000000000008 000000c000000000 ffff828c80164e52
>> 000000000000e008 (XEN)    0000000000000246 ffff828c802d7dd0
>> 000000000000e010 ffff828c8024c100 (XEN)    0000000000000000
>> ffff828c8016831d ffff83007c4bcb68 ffff828c802d7e20 (XEN)
>> ffff828c80168372 0000000000000003 0000000000000002 00000023468c5549
>> (XEN)    0000000000000000 ffff828c802d7e50 ffff828c8011dc33
>> 0000000000000002 (XEN)    ffff828c80306a60 00000023468bdaa9
>> ffff828c8024c100 ffff828c802d7ea0 (XEN)    ffff828c8011dd5d
>> ffff828c802d7f28 ffff828c8024c100 ffff83007c4bcb60 (XEN)
>> 0000000000000000 ffff828c802285a0 ffff828c802d7f28 ffff828c802ea700
>> (XEN)    ffff828c802ec700 ffff828c802d7ee0 ffff828c8011bce1
>> 0000003000000000 (XEN)    ffff828c802d7f28 ffff828c802285a0
>> ffff828c802d7f28 ffff828c8024ca00 (XEN)    ffff828c80228ab8
>> ffff828c802d7f20 ffff828c80148ac5 ffff830078908000 (XEN) Xen call
>> trace: (XEN)    [<ffff828c801534ad>] do_IRQ+0x2c3/0x690 (XEN)
>> [<ffff828c8014cb56>] common_interrupt+0x26/0x30 (XEN)
>> [<ffff828c80164e52>] on_selected_cpus+0xdb/0x11f (XEN)
>> [<ffff828c80168372>] time_calibration+0x55/0x57 (XEN)
>> [<ffff828c8011dc33>] execute_timer+0x2e/0x4c (XEN)
>> [<ffff828c8011dd5d>] timer_softirq_action+0x10c/0x331 (XEN)
>> [<ffff828c8011bce1>] do_softirq+0x6f/0x8e (XEN)
>> [<ffff828c80148ac5>] idle_loop+0x8f/0x94 (XEN) (XEN) (XEN)
>> **************************************** (XEN) Panic on CPU 0: (XEN)
>> Assertion '(sp == 0) || (peoi[sp-1].vector < vector)' failed at
>> irq.c:749 (XEN) **************************************** (XEN) (XEN)
>> Reboot in five seconds...
>>
>>
>> In previous versions i have tried it, it caused the whole machine to
>> get stuck, with no output, so it looks like now, it's better - i
>> finally get a xen panic :)
>>
>> Can someone please help me with this?
>>
>> Tom
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel
>
>

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