Re: [v4 0/8] Add VT-d Posted-Interrupts support - IOMMU part
From: Joerg Roedel
Date: Thu Apr 02 2015 - 07:28:40 EST
On Mon, Feb 02, 2015 at 04:06:56PM +0800, Feng Wu wrote:
> VT-d Posted-Interrupts is an enhancement to CPU side Posted-Interrupt.
> With VT-d Posted-Interrupts enabled, external interrupts from
> direct-assigned devices can be delivered to guests without VMM
> intervention when guest is running in non-root mode.
> You can find the VT-d Posted-Interrtups Spec. in the following URL:
> This series was part of http://thread.gmane.org/gmane.linux.kernel.iommu/7708. To make things clear, send out IOMMU part here.
Besides the modify_irte() changes I asked for the patch-set looks good.
I just have some concerns what these changes mean for the VT-d kdump
improvements Zhen-Hua Li is working on. Can you please discuss the
implications of having both patch-sets applied with him and make sure
they work together? I think in its current form your patch-set breaks
the kdump support patches. I added Zhen-Hua to Cc.
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