Re: [PATCH v2 08/16] xen/riscv: add temporary stub for smp_send_event_check_mask()

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

On 1/29/26 5:32 PM, Jan Beulich wrote:
> On 22.01.2026 17:47, Oleksii Kurochko wrote:
> > RISC-V SMP support is not yet implemented, but smp_send_event_check_mask()
> > is required by common code and vcpu_kick(), which is introduced later.
> > Provide a temporary stub implementation that asserts the mask only targets
> > CPU0.
> >
> > cpumask_subset() is used instead of cpumask_equal() because some callers
> > (e.g. cpumask_raise_softirq() or cpu_raise_softirq_batch_finish()) may
> > legitimately pass an empty mask, which would otherwise cause false
> > failures.
> >
> > The BUG_ON() ensures that attempts to use this function with multiple CPUs
> > are caught early once SMP support is introduced.
> >
> > Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Thanks.

> Looks like this is independent of earlier patches in the series, and hence
> could go in right away? Please confirm.
I confirm that it is independent and could go right away. I, also, checked
locally compilation of this patch on top of current staging and it is fine.

~ Oleksii