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Re: [Xen-devel] [PATCH] VT-d: make flush-all actually flush all

To: Jan Beulich <JBeulich@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date: Wed, 9 Dec 2015 16:00:42 +0000
Cc: Kevin Tian <kevin.tian@xxxxxxxxx>, Feng Wu <feng.wu@xxxxxxxxx>
Delivery-date: Wed, 09 Dec 2015 16:00:57 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 09/12/15 14:52, Jan Beulich wrote:
> VT-d: make flush-all actually flush all
>
> Passing gfn=0 and page_count=0 actually avoids the
> iommu_flush_iotlb_dsi() and results in page-specific invalidation
> instead.
>
> Reported-by: "åæ" <zhangzhi2014@xxxxxxx>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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References:
- [Xen-devel] [PATCH] VT-d: make flush-all actually flush all
  - From: Jan Beulich

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