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Re: [PATCH for-4.21?] AMD/IOMMU: unshare IRQ .ack and .disable handlers
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 20 Oct 2025 16:02:00 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Jason Andryuk <jason.andryuk@xxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
- Delivery-date: Mon, 20 Oct 2025 15:02:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 20/10/2025 3:16 pm, Jan Beulich wrote:
> A .disable handler can't typically be re-used for .ack: The latter needs
> to deal with IRQ migration, while the former shouldn't. Furthermore
> invoking just irq_complete_move() isn't enough; one of
> move_{native,masked}_irq() also need invoking.
>
> Fixes: 487a1cffd71a ("x86: Implement per-cpu vector for xen hypervisor")
> Fixes: f821102450a1 ("x86: IRQ Migration logic enhancement")
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
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