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Re: [PATCH for-4.15] x86/dmop: Properly fail for PV guests

To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
From: Jan Beulich <jbeulich@xxxxxxxx>
Date: Fri, 26 Feb 2021 09:52:59 +0100
Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>, Paul Durrant <paul@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
Delivery-date: Fri, 26 Feb 2021 08:53:04 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 25.02.2021 18:09, Andrew Cooper wrote:
> The current code has an early exit for PV guests, but it returns 0 having done
> nothing.
> 
> Fixes: 524a98c2ac5 ("public / x86: introduce __HYPERCALL_dm_op...")
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

References:
- [PATCH for-4.15] x86/dmop: Properly fail for PV guests
  - From: Andrew Cooper

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