[Feature] VT-d posted interrupts

Bug #1328027 reported by Yingying Zhao on 2014-06-09
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
intel
Undecided
Unassigned
linux (Ubuntu)
Undecided
Unassigned
xen (Ubuntu)
Undecided
Unassigned

Bug Description

Posted Interrupts on Broadwell is really VT-d posted interrupts. Posted Interrupts for the processor are part of the APIC-V and was introduced in IVT. The idea is that the interrupt can be placed in a data structure for the guest and the guest can, under the right conditions, receive the interrupt without VM exiting. Chapter 29 of vol. c of the SDM has the currently public part of posted interrupts.

Upstream Schedule:
kernel: 4.4
Xen: 4.7

Target Ubuntu Release:
Ubuntu 16.04

tags: added: utopic
Yingying Zhao (yingying-zhao) wrote :

The KVM target will be kernel 3.19 depending on Broadwell Server hardware availability.

description: updated

Ok, sounds like this should retarget to the 15.04 Ubuntu release then. Thanks.

Yingying Zhao (yingying-zhao) wrote :

Yes. Please retarget to 15.04 release.

Yingying Zhao (yingying-zhao) wrote :

Latest upstream schedule update:
KVM: 3.20
Xen: 4.6

tags: added: vivid
removed: utopic
description: updated
description: updated

Per discussion between Canonical and Intel, retarget to 15.10.

description: updated

With the kernel target of 4.3 and xen target of 4.6, shall we retarget this to 16.04?

XiongZhang (xiong-y-zhang) wrote :

it hasn't finished in upstream, so move it to 16.04

description: updated
XiongZhang (xiong-y-zhang) wrote :

it has been merged into 4.4 kernel.
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description: updated
description: updated
information type: Proprietary → Private
Changed in linux (Ubuntu):
status: New → Fix Released
XiongZhang (xiong-y-zhang) wrote :

For Xen, it is implemented in xen 4.7. Please update Xen in 16.10 to 4.7

information type: Private → Public
Changed in intel:
status: New → Fix Released
Changed in xen (Ubuntu):
status: New → Fix Released
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