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 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
-Original Message-
From: Paolo Bonzini [mailto:paolo.bonz...@gmail.com] On Behalf Of Paolo
Bonzini
Sent: Tuesday, December 23, 2014 4:48 PM
To: Zhang, Yang Z; Paolo Bonzini; Wu, Feng; Thomas Gleixner; Ingo Molnar; H.
Peter Anvin; x...@kernel.org; Gleb Natapov; dw...@infradead.org;
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 not delivered
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 to other CPUs in
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, but he still see the
-Original Message-
From: Zhang, Yang Z
Sent: Wednesday, December 24, 2014 10:33 AM
To: Jiang Liu; Paolo Bonzini; Wu, Feng; Thomas Gleixner; Ingo Molnar; H. Peter
Anvin; x...@kernel.org; Gleb Natapov; dw...@infradead.org;
j...@8bytes.org; Alex Williamson
Cc:
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
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 user set an interrupt's
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 never
takes
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 controlled by
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
-Original Message-
From: Zhang, Yang Z
Sent: Thursday, December 18, 2014 10:26 PM
To: Wu, Feng; t...@linutronix.de; mi...@redhat.com; h...@zytor.com;
x...@kernel.org; g...@kernel.org; pbonz...@redhat.com;
dw...@infradead.org; j...@8bytes.org; alex.william...@redhat.com;
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, x86: No need to migrating irq for
VT-d
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