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Re: [PATCH] AMD/IOMMU: don't increase perms when splitting superpage

To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
From: Paul Durrant <xadimgnik@xxxxxxxxx>
Date: Thu, 19 Aug 2021 19:54:45 +0100
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Delivery-date: Thu, 19 Aug 2021 18:54:52 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 19/08/2021 09:04, Jan Beulich wrote:

The old (super)page's permissions ought to be propagated, rather than
blindly allowing both reads and writes.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>


Reviewed-by: Paul Durrant <paul@xxxxxxx>

References:
- [PATCH] AMD/IOMMU: don't increase perms when splitting superpage
  - From: Jan Beulich

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