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
>
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'
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 del
Paolo Bonzini wrote on 2014-12-23:
>> The problem is we still need to support PI with lowest priority
>> delivery mode
> even if guest does not configure irq affinity via /proc/irq/. Don't we?
>
> Yes, but we can get the basic support working first.
>
> I and Feng talked on irc and agreed to star
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'
Wu, Feng wrote on 2014-12-19:
>
>
> Zhang, Yang Z wrote on 2014-12-19:
>> Subject: RE: [v3 25/26] KVM: Suppress posted-interrupt when 'SN' is
>> set
>>
>> Wu, Feng wrote on 2014-12-19:
>>>
>>>
>>> Zhang, Yang Z wrote on 2
Wu, Feng wrote on 2014-12-19:
>
>
> Zhang, Yang Z wrote on 2014-12-19:
>> Subject: RE: [v3 25/26] KVM: Suppress posted-interrupt when 'SN' is
>> set
>>
>> Wu, Feng wrote on 2014-12-19:
>>>
>>>
>>> Zhang, Yang Z wrote on 2
Wu, Feng wrote on 2014-12-19:
>
>
> Zhang, Yang Z wrote on 2014-12-19:
>> Subject: RE: [v3 25/26] KVM: Suppress posted-interrupt when 'SN' is
>> set
>>
>> Wu, Feng wrote on 2014-12-19:
>>>
>>>
>>> iommu-boun...@l
Wu, Feng wrote on 2014-12-19:
>
>
> iommu-boun...@lists.linux-foundation.org wrote on
> mailto:iommu-boun...@lists.linux-foundation.org] On Behalf Of:
>> Cc: iommu@lists.linux-foundation.org; linux-ker...@vger.kernel.org;
>> k...@vger.kernel.org
>> Subject: RE: [v3 25/26] KVM: Suppress posted-in
w interface
>> kvm_find_dest_vcpu() for VT-d PI
>>
>>
>>
>> On 18/12/2014 15:49, Zhang, Yang Z wrote:
>>>>> Here, we introduce a similar way with 'apic_arb_prio' to handle
>>>>> guest lowest priority interrtups when VT-d PI is us
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,
Paolo Bonzini wrote on 2014-12-19:
>
>
> On 18/12/2014 15:49, Zhang, Yang Z wrote:
>>>> Here, we introduce a similar way with 'apic_arb_prio' to handle
>>>> guest lowest priority interrtups when VT-d PI is used. Here is the
>>>> ideas:
Feng Wu wrote on 2014-12-12:
> This patch initializes the VT-d Posted-Interrupts Descriptor.
>
> Signed-off-by: Feng Wu
> ---
> arch/x86/kvm/vmx.c | 27 +++
> 1 file changed, 27 insertions(+)
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index
> 0b1383e..66ca275
Paolo Bonzini wrote on 2014-12-18:
>
>
> On 18/12/2014 04:14, Wu, Feng wrote:
>>
>>
>> linux-kernel-ow...@vger.kernel.org wrote on
>> mailto:linux-kernel-ow...@vger.kernel.org] On Behalf Of Paolo:
>>> x...@kernel.org; Gleb Natapov; Paolo Bonzini; dw...@infradead.org;
>>> joro-zlv9swrftaidnm+yr
Feng Wu wrote on 2014-12-12:
> Currently, we use a global vector as the Posted-Interrupts
> Notification Event for all the vCPUs in the system. We need to
> introduce another global vector for VT-d Posted-Interrtups, which will
> be used to wakeup the sleep vCPU when an external interrupt from a
>
Feng Wu wrote on 2014-12-12:
> This patch defines a new interface kvm_find_dest_vcpu for
> VT-d PI, which can returns the destination vCPU of the
> interrupt for guests.
>
> Since VT-d PI cannot handle broadcast/multicast interrupt,
> Here we only handle Fixed and Lowest priority interrupts.
>
>
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
Wu, Feng wrote on 2014-11-13:
>
>
> Zhang, Yang Z wrote on 2014-11-13:
>> k...@vger.kernel.org; iommu@lists.linux-foundation.org;
>> linux-ker...@vger.kernel.org
>> Subject: RE: [PATCH 05/13] KVM: Update IRTE according to guest
>> interrupt configuration changes
Wu, Feng wrote on 2014-11-13:
>
>
> kvm-ow...@vger.kernel.org wrote on 2014-11-12:
>> k...@vger.kernel.org; iommu@lists.linux-foundation.org;
>> linux-ker...@vger.kernel.org
>> Subject: Re: [PATCH 05/13] KVM: Update IRTE according to guest
>> interrupt configuration changes
>>
>>
>>
>> On 12
Paolo Bonzini wrote on 2014-11-11:
>
>
> On 11/11/2014 10:20, Wu, Feng wrote:
>>> Since legacy KVM device assignment is effectively deprecated, have
>>> you considered how we might do this with VFIO? Thanks,
>>
>> I haven't thought about how to enable this in VFIO so far. I think I
>> can conti
Alex Williamson wrote on 2013-12-24:
> David,
>
> Any comments on this patch? Thanks,
>
Hi Alex,
There do have some IOMMUs will treat SNP bit in the PTE as reserved (0) and
will cause a reserved field violation fault if it is set but hardware not
support snoop-control(bit 7 in ECAP_REG is 0)
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