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Re: [PATCH] x86/p2m-pt: fix off by one in entry check assert

To: Roger Pau Monne <roger.pau@xxxxxxxxxx>
From: George Dunlap <george.dunlap@xxxxxxxxx>
Date: Wed, 24 Jan 2024 10:23:07 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
Delivery-date: Wed, 24 Jan 2024 10:23:29 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On Wed, Jan 24, 2024 at 8:45 AM Roger Pau Monne <roger.pau@xxxxxxxxxx> wrote:
>
> The MMIO RO rangeset overlap check is bogus: the rangeset is inclusive so the
> passed end mfn should be the last mfn to be mapped (not last + 1).
>
> Fixes: 6fa1755644d0 ('amd/npt/shadow: replace assert that prevents creating 
> 2M/1G MMIO entries')
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxx>

References:
- [PATCH] x86/p2m-pt: fix off by one in entry check assert
  - From: Roger Pau Monne

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