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Re: [Xen-devel] [PATCH v2] x86/p2m-pt: tighten conditions of IOMMU mapping updates

To: Jan Beulich <JBeulich@xxxxxxxx>
From: Wei Liu <wei.liu2@xxxxxxxxxx>
Date: Thu, 1 Oct 2015 15:55:04 +0100
Cc: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Delivery-date: Thu, 01 Oct 2015 14:55:25 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On Thu, Oct 01, 2015 at 04:25:01AM -0600, Jan Beulich wrote:
> Whether the MFN changes does not depend on the new entry being valid
> (but solely on the old one), and the need to update or TLB-flush also
> depends on permission changes.
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Release-acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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References:
- [Xen-devel] [PATCH v2] x86/p2m-pt: tighten conditions of IOMMU mapping updates
  - From: Jan Beulich

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