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Date: Thu, 19 Jan 2017 17:38:08 +0800
From: Peter Xu <peterx@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH RFC v3 14/14] intel_iommu: enable vfio
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To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Jason Wang <jasowang@redhat.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "Lan, Tianyu" <tianyu.lan@intel.com>, "mst@redhat.com" <mst@redhat.com>, "jan.kiszka@siemens.com" <jan.kiszka@siemens.com>, "alex.williamson@redhat.com" <alex.williamson@redhat.com>, "bd.aviv@gmail.com" <bd.aviv@gmail.com>, "Raj, Ashok" <ashok.raj@intel.com>

On Thu, Jan 19, 2017 at 06:22:48AM +0000, Tian, Kevin wrote:

[...]

> still copy response from spec owner here:-)
> 
> 	Explicit invalidation is anytime software is explicitly invalidating something (
> 	through any descriptor) as opposed to something hardware does implicitly.  
> 	The only time hardware does implicit invalidation is during the handling of a page 
> 	request (recoverable page-fault) from an endpoint device.

Thanks for the confirmation!

-- peterx