Re: [Xen-devel] [PATCH v7 2/2] vgic: refuse irq migration when one is already in progress

[Julien Grall <julien.grall@xxxxxxx>]

Hi Stefano,

On 04/05/2017 09:28 PM, Stefano Stabellini wrote:
> When an irq migration is already in progress, but not yet completed
> (GIC_IRQ_GUEST_MIGRATING is set), refuse any other irq migration
> requests for the same irq.
>
> This patch implements this approach by returning success or failure from
> vgic_migrate_irq, and avoiding irq target changes on failure. It prints
> a warning in case the irq migration fails.
>
> It also moves the clear_bit of GIC_IRQ_GUEST_MIGRATING to after the
> physical irq affinity has been changed so that all operations regarding
> irq migration are completed.
>
> Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Reviewed-by: Julien Grall <julien.grall@xxxxxxx>

Cheers,

--
Julien Grall

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