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Re: [PATCH 16/36] xen/color alloc: implement color_from_page for ARM64

To: Marco Solieri <marco.solieri@xxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
From: Julien Grall <julien@xxxxxxx>
Date: Fri, 4 Mar 2022 20:54:35 +0000
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Marco Solieri <marco.solieri@xxxxxxxxxx>, Andrea Bastoni <andrea.bastoni@xxxxxxxxxxxxxxx>, Luca Miccio <lucmiccio@xxxxxxxxx>
Delivery-date: Fri, 04 Mar 2022 20:54:51 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Hi,

On 04/03/2022 17:46, Marco Solieri wrote:

From: Luca Miccio <lucmiccio@xxxxxxxxx>

The colored allocator should not make any assumptions on how a color is
defined, since the definition may change depending on the architecture.

IIUC, you are saying that the mapping between a physical address to away is the same on every Armv8 processor.


Can you provide a reference from the Arm Arm which confirm this statement?

Cheers,

--
Julien Grall

Follow-Ups:
- Re: [PATCH 16/36] xen/color alloc: implement color_from_page for ARM64
  - From: Marco Solieri

References:
- [PATCH 00/36] Arm cache coloring
  - From: Marco Solieri
- [PATCH 16/36] xen/color alloc: implement color_from_page for ARM64
  - From: Marco Solieri

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