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Re: [PATCH 5/5] xen/arm: map static memory on demand
- To: Hari Limaye <hari.limaye@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Ayan Kumar Halder <ayankuma@xxxxxxx>
- Date: Mon, 4 Aug 2025 14:05:15 +0100
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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>, Michal Orzel <michal.orzel@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: Mon, 04 Aug 2025 13:05:28 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi Hari,
On 30/07/2025 09:45, Hari Limaye wrote:
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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: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
Tested-by: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
(On R82 and R52 with some additional patches)
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