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Re: [PATCH v2 5/5] xen/arm: map static memory on demand
- To: Hari Limaye <hari.limaye@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: "Orzel, Michal" <michal.orzel@xxxxxxx>
- Date: Thu, 28 Aug 2025 10:51:51 +0200
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- Cc: <luca.fancellu@xxxxxxx>, Penny Zheng <Penny.Zheng@xxxxxxx>, "Stefano Stabellini" <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, "Bertrand Marquis" <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Chen <wei.chen@xxxxxxx>
- Delivery-date: Thu, 28 Aug 2025 09:22:48 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 27/08/2025 18:35, Hari Limaye wrote:
> From: Penny Zheng <Penny.Zheng@xxxxxxx>
>
> In the function `init_staticmem_pages` we need to have mapped static
> memory banks for initialization. Unlike on an MMU system, we cannot map
> the entire RAM on an MPU system as we have a limited number of MPU
> memory regions. To solve this, transiently map the static memory banks
> for initialization.
>
> Signed-off-by: Penny Zheng <penny.zheng@xxxxxxx>
> Signed-off-by: Wei Chen <wei.chen@xxxxxxx>
> Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>
> Signed-off-by: Hari Limaye <hari.limaye@xxxxxxx>
Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
~Michal
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