Re: [Xen-devel] [PATCHv5] x86/xen: allow privcmd hypercalls to be preempted

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 02/05/2015 07:41 AM, David Vrabel wrote:
> +
> +void xen_maybe_preempt_hcall(void)
> +{
> +       if (__this_cpu_read(xen_in_preemptible_hcall)) {
Can you check should_resched() here?

-boris

> +               /*
> +                * Clear flag as we may be rescheduled on a different
> +                * cpu.
> +                */
> +               __this_cpu_write(xen_in_preemptible_hcall, false);
> +               _cond_resched();
> +               __this_cpu_write(xen_in_preemptible_hcall, true);
> +       }
> +}
> +#endif /* CONFIG_PREEMPT */

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