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Re: [PATCH v4 3/3] arm/mpu: Enable read/write to protection regions for arm32
- To: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
- From: Luca Fancellu <Luca.Fancellu@xxxxxxx>
- Date: Tue, 17 Jun 2025 12:10:55 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <Bertrand.Marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Hari Limaye <Hari.Limaye@xxxxxxx>
- Delivery-date: Tue, 17 Jun 2025 12:11:52 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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- Thread-topic: [PATCH v4 3/3] arm/mpu: Enable read/write to protection regions for arm32
Hi Ayan,
> On 17 Jun 2025, at 12:12, Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx> wrote:
>
> Define prepare_selector(), read_protection_region() and
> write_protection_region() for arm32. Also, define
> GENERATE_{READ/WRITE}_PR_REG_OTHERS to access MPU regions from 32 to 254.
>
> Enable pr_{get/set}_{base/limit}(), region_is_valid() for arm32.
> Enable pr_of_addr() for arm32.
>
> The maximum number of regions supported is 255 (which corresponds to the
> maximum value in HMPUIR).
>
> Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
> —
This looks good to me!
Reviewed-by: Luca Fancellu <luca.fancellu@xxxxxxx>
Cheers,
Luca
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