On Fri, 2014-12-12 at 23:14 +0800, Feng Wu wrote:
> We don't need to migrate the irqs for VT-d Posted-Interrupts here.
> When 'pst' is set in IRTE, the associated irq will be posted to
> guests instead of interrupt remapping. The destination of the
> interrupt is set in Posted-Interrupts Descriptor
On 2014/12/24 10:32, Zhang, Yang Z wrote:
> Jiang Liu wrote on 2014-12-24:
>> On 2014/12/24 9:38, Zhang, Yang Z wrote:
>>> Paolo Bonzini wrote on 2014-12-23:
On 23/12/2014 10:07, Wu, Feng wrote:
>> On 23/12/2014 01:37, Zhang, Yang Z wrote:
>>> I don't quite understand it. If
Wu, Feng wrote on 2014-12-24:
>
>
> Zhang, Yang Z wrote on 2014-12-24:
>> Cc: iommu@lists.linux-foundation.org; linux-ker...@vger.kernel.org;
>> KVM list; Eric Auger
>> Subject: RE: [v3 06/26] iommu, x86: No need to migrating irq for
>> VT-d Posted-Interrupts
>
iamson
> Cc: iommu@lists.linux-foundation.org; linux-ker...@vger.kernel.org; KVM list;
> Eric Auger
> Subject: RE: [v3 06/26] iommu, x86: No need to migrating irq for VT-d
> Posted-Interrupts
>
> Jiang Liu wrote on 2014-12-24:
> > On 2014/12/24 9:38, Zhang, Yang Z wro
Jiang Liu wrote on 2014-12-24:
> On 2014/12/24 9:38, Zhang, Yang Z wrote:
>> Paolo Bonzini wrote on 2014-12-23:
>>>
>>>
>>> On 23/12/2014 10:07, Wu, Feng wrote:
> On 23/12/2014 01:37, Zhang, Yang Z wrote:
>> I don't quite understand it. If user set an interrupt's affinity
>> to a CPU,
On 2014/12/24 9:38, Zhang, Yang Z wrote:
> Paolo Bonzini wrote on 2014-12-23:
>>
>>
>> On 23/12/2014 10:07, Wu, Feng wrote:
On 23/12/2014 01:37, Zhang, Yang Z wrote:
> I don't quite understand it. If user set an interrupt's affinity
> to a CPU, but he still see the interrupt delivers t
Paolo Bonzini wrote on 2014-12-23:
>
>
> On 23/12/2014 10:07, Wu, Feng wrote:
>>> On 23/12/2014 01:37, Zhang, Yang Z wrote:
I don't quite understand it. If user set an interrupt's affinity
to a CPU, but he still see the interrupt delivers to other CPUs in host.
Do you think it is a
On 23/12/2014 10:07, Wu, Feng wrote:
>> On 23/12/2014 01:37, Zhang, Yang Z wrote:
>>> I don't quite understand it. If user set an interrupt's affinity to a
>>> CPU, but he still see the interrupt delivers to other CPUs in host.
>>> Do you think it is a right behavior?
>>
>> No, the interrupt is n
; Gleb Natapov; dw...@infradead.org;
> j...@8bytes.org; Alex Williamson; Jiang Liu
> Cc: iommu@lists.linux-foundation.org; linux-ker...@vger.kernel.org; KVM list;
> Eric Auger
> Subject: Re: [v3 06/26] iommu, x86: No need to migrating irq for VT-d
> Posted-Interrupts
>
>
>
> On
On 23/12/2014 01:37, Zhang, Yang Z wrote:
> I don't quite understand it. If user set an interrupt's affinity to a
> CPU, but he still see the interrupt delivers to other CPUs in host.
> Do you think it is a right behavior?
No, the interrupt is not delivered at all in the host. Normally you'd ha
Paolo Bonzini wrote on 2014-12-19:
>
>
> On 19/12/2014 02:46, Zhang, Yang Z wrote:
>>> If the IRQ is posted, its affinity is controlled by guest (irq
>>> <---> vCPU <> pCPU), it has no effect when host changes its affinity.
>>
>> That's the problem: User is able to changes it in host but it
On 19/12/2014 02:46, Zhang, Yang Z wrote:
>> If the IRQ is posted, its affinity is controlled by guest (irq <--->
>> vCPU <> pCPU), it has no effect when host changes its affinity.
>
> That's the problem: User is able to changes it in host but it never
> takes effect since it is actually con
Wu, Feng wrote on 2014-12-19:
>
>
> Zhang, Yang Z wrote on 2014-12-18:
>> jiang@linux.intel.com
>> Cc: eric.au...@linaro.org; linux-ker...@vger.kernel.org;
>> iommu@lists.linux-foundation.org; k...@vger.kernel.org; Wu, Feng
>> Subject: RE: [v3 06/26] iommu,
liam...@redhat.com;
> jiang@linux.intel.com
> Cc: eric.au...@linaro.org; linux-ker...@vger.kernel.org;
> iommu@lists.linux-foundation.org; k...@vger.kernel.org; Wu, Feng
> Subject: RE: [v3 06/26] iommu, x86: No need to migrating irq for VT-d
> Posted-Interrupts
>
> Feng Wu wr
Feng Wu wrote on 2014-12-12:
> We don't need to migrate the irqs for VT-d Posted-Interrupts here.
> When 'pst' is set in IRTE, the associated irq will be posted to guests
> instead of interrupt remapping. The destination of the interrupt is
> set in Posted-Interrupts Descriptor, and the migration h
We don't need to migrate the irqs for VT-d Posted-Interrupts here.
When 'pst' is set in IRTE, the associated irq will be posted to
guests instead of interrupt remapping. The destination of the
interrupt is set in Posted-Interrupts Descriptor, and the migration
happens during vCPU scheduling.
Howev
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