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Re: [PATCH v4 2/6] arm/mpu: Implement vmap functions for MPU
- To: Harry Ramsey <harry.ramsey@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: "Orzel, Michal" <michal.orzel@xxxxxxx>
- Date: Thu, 15 Jan 2026 10:19:16 +0100
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- Cc: <Luca.Fancellu@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Thu, 15 Jan 2026 09:19:33 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 14/01/2026 15:27, Harry Ramsey wrote:
> From: Luca Fancellu <luca.fancellu@xxxxxxx>
>
> HAS_VMAP is not enabled on MPU systems, but the vmap functions are used
> in places across common code. In order to keep the existing code and
> maintain correct functionality, implement the `vmap_contig` and `vunmap`
> functions for MPU systems.
>
> Introduce a helper function `destroy_xen_mapping_containing` to aid with
> unmapping an entire region when only the start address is known.
>
> Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>
> Signed-off-by: Harry Ramsey <harry.ramsey@xxxxxxx>
Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
~Michal
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