Re: [Xen-devel] nr_irqs_gsi

[Joe Jin <joe.jin@xxxxxxxxxx>]

On 07/24/12 10:02, Konrad Rzeszutek Wilk wrote:
> On Tue, Jul 24, 2012 at 10:03:17AM +0800, Joe Jin wrote:
>> On 07/23/12 23:34, Konrad Rzeszutek Wilk wrote:
>>> On Mon, Jul 23, 2012 at 02:30:37PM +0100, Jan Beulich wrote:
>>>>>>> On 12.07.12 at 04:17, Joe Jin <joe.jin@xxxxxxxxxx> wrote:
>>>>>>>> (XEN) ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0])
>>>>>>>> (XEN) IOAPIC[0]: apic_id 0, version 32, address 0xfec00000, GSI 0-23
>>>>>>>> (XEN) ACPI: IOAPIC (id[0x01] address[0xfec80000] gsi_base[32])
>>>>>>>> (XEN) IOAPIC[1]: apic_id 1, version 32, address 0xfec80000, GSI 32-55
>>>>>
>>>>> Below came from dom0:
>>>>>
>>>>> ACPI: LAPIC_NMI (acpi_id[0xff] high edge lint[0x1])
>>>>> ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0])
>>>>> IOAPIC[0]: apic_id 0, version 255, address 0xfec00000, GSI 0-255
>>>>
>>>> Now this and ...
>>>>
>>>>> ACPI: IOAPIC (id[0x01] address[0xfec80000] gsi_base[32])
>>>>> IOAPIC[1]: apic_id 1, version 255, address 0xfec80000, GSI 32-287
>>>>
>>>> ... this is clearly bogus, contradicting what Xen itself prints (see
>>>> above).
>>>
>>> Yeah, that got fixed up in v3.5 (merge git 
>>> f08b9c2f8af0d61faa1170aeae4fbca1eff6a504)
>>> specifically:
>>>
>>>       x86/apic: Fix UP boot crash
>>>       xen/apic: implement io apic read with hypercall
>>>       xen/x86: Implement x86_apic_ops
>>>       x86/apic: Replace io_apic_ops with x86_io_apic_ops.
>>>       x86/ioapic: Add io_apic_ops driver layer to allow interception
>>>
>>
>> Konrad,
>>
>> Would you please point out which commit is make sense for this issue? so far 
>> I still
>> suspend it's a hypervisor issue rather than dom0 kernel.
> 
> I concur. The patches above are just for reporting the GSI properly in the 
> initial domain.
Thanks for the input, I'll waiting the customer's response, for I did not 
reproduced it, once
confirm it works, we can include Jan's patch.

Thanks,
Joe

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