From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Juergen Gross <jgross@suse.com>,
xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Julien Grall <julien@xen.org>
Subject: Re: [PATCH] xen/events: reset active flag for lateeoi events later
Date: Wed, 23 Jun 2021 19:18:36 -0400 [thread overview]
Message-ID: <9736ccf7-ee9d-ccae-fed6-cfeef78e6a8f@oracle.com> (raw)
In-Reply-To: <20210623130913.9405-1-jgross@suse.com>
On 6/23/21 9:09 AM, Juergen Gross wrote:
> In order to avoid a race condition for user events when changing
> cpu affinity reset the active flag only when EOI-ing the event.
>
> This is working fine as all user events are lateeoi events. Note that
> lateeoi_ack_mask_dynirq() is not modified as there is no explicit call
> to xen_irq_lateeoi() expected later.
>
> Reported-by: Julien Grall <julien@xen.org>
> Fixes: b6622798bc50b62 ("xen/events: avoid handling the same event on two cpus at the same time")
> Tested-by: Julien Grall <julien@xen.org>
> Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrvsky@oracle.com>
next prev parent reply other threads:[~2021-06-23 23:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-23 13:09 Juergen Gross
2021-06-23 23:18 ` Boris Ostrovsky [this message]
2021-07-05 9:00 ` Ross Lagerwall
2021-07-05 9:16 ` Juergen Gross
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