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Re: [PATCH 1/5] xen/memory: Introduce CONFIG_ARCH_ACQUIRE_RESOURCE

To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
From: Jan Beulich <jbeulich@xxxxxxxx>
Date: Wed, 29 Jul 2020 21:41:32 +0200
Cc: Hubert Jasudowicz <hubert.jasudowicz@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Paul Durrant <paul@xxxxxxx>, Michał Leszczyński <michal.leszczynski@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
Delivery-date: Wed, 29 Jul 2020 19:41:52 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 28.07.2020 13:37, Andrew Cooper wrote:

New architectures shouldn't be forced to implement no-op stubs for unused
functionality.

Introduce CONFIG_ARCH_ACQUIRE_RESOURCE which can be opted in to, and provide
compatibility logic in xen/mm.h

No functional change.

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


Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

References:
- [PATCH 0/5] Multiple fixes to XENMEM_acquire_resource
  - From: Andrew Cooper
- [PATCH 1/5] xen/memory: Introduce CONFIG_ARCH_ACQUIRE_RESOURCE
  - From: Andrew Cooper

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