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Re: [PATCH v4 6/9] xen/riscv: implementation of aplic and imsic operations
- To: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 10 Jun 2025 17:26:53 +0200
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- Cc: Alistair Francis <alistair.francis@xxxxxxx>, Bob Eshleman <bobbyeshleman@xxxxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Romain Caritey <Romain.Caritey@xxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 10 Jun 2025 15:27:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 05.06.2025 17:59, Oleksii Kurochko wrote:
> Introduce interrupt controller descriptor for host APLIC to describe
> the low-lovel hardare. It includes implementation of the following functions:
> - aplic_irq_startup()
> - aplic_irq_enable()
> - aplic_irq_disable()
> - aplic_set_irq_affinity()
>
> As APLIC is used in MSI mode it requires to enable/disable interrupts not
> only for APLIC but also for IMSIC. Thereby for the purpose of
> aplic_irq_{enable,disable}() it is introduced imsic_irq_{enable,disable)().
>
> For the purpose of aplic_set_irq_affinity() aplic_get_cpu_from_mask() is
> introduced to get hart id.
>
> Also, introduce additional interrupt controller h/w operations and
> host_irq_type for APLIC:
> - aplic_host_irq_type
>
> Patch is based on the code from [1].
>
> [1]
> https://gitlab.com/xen-project/people/olkur/xen/-/commit/7390e2365828b83e27ead56b03114a56e3699dd5
>
> Co-developed-by: Romain Caritey <Romain.Caritey@xxxxxxxxxxxxx>
> Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
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