Re: [Xen-devel] [PATCH v4 03/14] xen/x86: allow calling {shadow/hap}_set_allocation with the idle domain

[Tim Deegan <tim@xxxxxxx>]

At 16:49 +0000 on 30 Nov (1480524579), Roger Pau Monne wrote:
> ... and using the "preempted" parameter. Introduce a new helper that can
> be used from both hypercall or idle vcpu context (ie: during Dom0
> creation) in order to check if preemption is needed. If such preemption
> happens, the caller should then call process_pending_softirqs in order to
> drain the pending softirqs, and then call *_set_allocation again to continue
> with it's execution.
> 
> This allows us to call *_set_allocation() when building domain 0.
> 
> While there also document hypercall_preempt_check and add an assert to
> local_events_need_delivery in order to be sure it's not called by the idle
> domain, which doesn't receive any events (and that in turn
> hypercall_preempt_check is also not called by the idle domain).
> 
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
> Acked-by: George Dunlap <george.dunlap@xxxxxxxxxx>

Acked-by: Tim Deegan <tim@xxxxxxx>

Thanks,

Tim.

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