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Re: [PATCH v5 04/11] x86/passthrough: Extract pt_irq_dpci_setup() from pt_irq_create_bind()
- To: Julian Vetter <julian.vetter@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 30 Sep 2026 16:51:18 +0200
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- Cc: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, Community Manager <community.manager@xxxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger@xxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 30 Sep 2026 14:51:27 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 03.09.2026 16:14, Julian Vetter wrote:
> --- a/xen/drivers/passthrough/x86/hvm.c
> +++ b/xen/drivers/passthrough/x86/hvm.c
> @@ -217,16 +217,14 @@ static struct vcpu *vector_hashing_dest(const struct
> domain *d,
> return dest;
> }
>
> -int pt_irq_create_bind(
> - struct domain *d, const struct xen_domctl_bind_pt_irq *pt_irq_bind)
> +static int pt_irq_dpci_setup(struct domain *d, unsigned int pirq,
> + struct hvm_irq_dpci **hvm_irq_dpci_out,
> + struct hvm_pirq_dpci **pirq_dpci_out,
> + struct pirq **info_out)
This is a little ugly. Can we perhaps reduce ugliness by a third through
omitting pirq_dpci_out here? The caller can trivially compute it from
*info_out.
An option to reduce ugliness by another third would be to have the
function return e.g. struct hvm_irq_dpci *, encoding error indicators
by the macros supplied by xen/err.h.
Jan
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