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Re: [PATCH v4 06/16] xen/riscv: introduce tracking of pending vCPU interrupts, part 2
- To: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 17 Feb 2026 15:50:50 +0100
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- Cc: Romain Caritey <Romain.Caritey@xxxxxxxxxxxxx>, Alistair Francis <alistair.francis@xxxxxxx>, 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>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 17 Feb 2026 14:50:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 13.02.2026 17:28, Oleksii Kurochko wrote:
> --- a/xen/arch/riscv/domain.c
> +++ b/xen/arch/riscv/domain.c
> @@ -198,3 +198,34 @@ void vcpu_sync_interrupts(struct vcpu *v)
> # error "Update v->arch.vsieh"
> #endif
> }
> +
> +static void vcpu_update_hvip(const struct vcpu *v)
> +{
> + csr_write(CSR_HVIP, v->arch.hvip);
> +}
> +
> +void vcpu_flush_interrupts(struct vcpu *v)
> +{
> + if ( ACCESS_ONCE(v->arch.irqs_pending_mask[0]) )
> + {
> + register_t *hvip = &v->arch.hvip;
> +
> + unsigned long mask = xchg(&v->arch.irqs_pending_mask[0], 0UL);
> + unsigned long val = ACCESS_ONCE(v->arch.irqs_pending[0]) & mask;
Nit: As mentioned before, blank lines should not normally occur between
declarations (unless there are overly many of them). With the blank line
removed, personally I think things would end up slightly neater if hvip
was declared last.
> + *hvip &= ~mask;
> + *hvip |= val;
> +
> + vcpu_update_hvip(v);
> + }
> +
> +/*
> + * Flush AIA high interrupts.
> + *
> + * It is necessary to do only for CONFIG_RISCV_32 which isn't
> + * supported now.
> + */
> +#ifdef CONFIG_RISCV_32
May I suggest for this to move ahead of the comment, and for the comment
to be properly indented by one level?
With the adjustments:
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Jan
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