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Re: [PATCH v2 1/5] arm/mm: Document the differences between arm32 and arm64 directmaps

To: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
From: Julien Grall <julien@xxxxxxx>
Date: Fri, 28 Jul 2023 10:05:35 +0100
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
Delivery-date: Fri, 28 Jul 2023 09:05:43 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Hi Alex,

On 28/07/2023 08:58, Alejandro Vallejo wrote:

arm32 merely covers the XENHEAP, whereas arm64 currently covers anything in
the frame table. These comments highlight why arm32 doesn't need to account for 
PDX
compression in its __va() implementation while arm64 does.

Signed-off-by: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>


Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>

Cheers,

--
Julien Grall

References:
- [PATCH v2 0/5] Make PDX compression optional
  - From: Alejandro Vallejo
- [PATCH v2 1/5] arm/mm: Document the differences between arm32 and arm64 directmaps
  - From: Alejandro Vallejo

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