Re: [PATCH v2 3/8] xen/events: avoid handling the same event on two cpus at the same time

From: Jürgen Groß
Date: Thu Feb 18 2021 - 08:33:59 EST


On 15.02.21 22:35, Boris Ostrovsky wrote:

On 2/11/21 5:16 AM, Juergen Gross wrote:

@@ -622,6 +623,7 @@ static void xen_irq_lateeoi_locked(struct irq_info *info, bool spurious)
}
info->eoi_time = 0;
+ smp_store_release(&info->is_active, 0);


Can this be done in lateeoi_ack_dynirq()/lateeoi_mask_ack_dynirq(), after we've masked the channel? Then it will be consistent with how how other chips do it, especially with the new helper.

Yes, I think this should work.


Juergen

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