From: Wei Liu <wei.liu@kernel.org>
To: Juergen Gross <jgross@suse.com>
Cc: xen-devel@lists.xenproject.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, Wei Liu <wei.liu@kernel.org>,
Paul Durrant <paul@xen.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Subject: Re: [PATCH v2 4/8] xen/netback: fix spurious event detection for common event case
Date: Thu, 11 Feb 2021 15:24:09 +0000 [thread overview]
Message-ID: <20210211152409.knullq66jv3bkis2@liuwe-devbox-debian-v2> (raw)
In-Reply-To: <20210211101616.13788-5-jgross@suse.com>
On Thu, Feb 11, 2021 at 11:16:12AM +0100, Juergen Gross wrote:
> In case of a common event for rx and tx queue the event should be
> regarded to be spurious if no rx and no tx requests are pending.
>
> Unfortunately the condition for testing that is wrong causing to
> decide a event being spurious if no rx OR no tx requests are
> pending.
>
> Fix that plus using local variables for rx/tx pending indicators in
> order to split function calls and if condition.
>
> Fixes: 23025393dbeb3b ("xen/netback: use lateeoi irq binding")
> Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Wei Liu <wl@xen.org>
next prev parent reply other threads:[~2021-02-11 15:24 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-11 10:16 [PATCH v2 0/8] xen/events: bug fixes and some diagnostic aids Juergen Gross
2021-02-11 10:16 ` [PATCH v2 1/8] xen/events: reset affinity of 2-level event when tearing it down Juergen Gross
2021-02-14 21:17 ` Julien Grall
2021-02-11 10:16 ` [PATCH v2 2/8] xen/events: don't unmask an event channel when an eoi is pending Juergen Gross
2021-02-11 10:16 ` [PATCH v2 3/8] xen/events: avoid handling the same event on two cpus at the same time Juergen Gross
2021-02-14 21:34 ` Julien Grall
2021-02-15 6:55 ` Jürgen Groß
2021-02-15 21:35 ` Boris Ostrovsky
2021-02-18 11:47 ` Jürgen Groß
2021-02-11 10:16 ` [PATCH v2 4/8] xen/netback: fix spurious event detection for common event case Juergen Gross
2021-02-11 10:53 ` Jan Beulich
2021-02-11 14:15 ` Paul Durrant
2021-02-11 15:24 ` Wei Liu [this message]
2021-02-11 10:16 ` [PATCH v2 5/8] xen/events: link interdomain events to associated xenbus device Juergen Gross
2021-02-11 14:16 ` Paul Durrant
2021-02-11 10:16 ` [PATCH v2 6/8] xen/events: add per-xenbus device event statistics and settings Juergen Gross
2021-02-15 21:54 ` Boris Ostrovsky
2021-02-11 10:16 ` [PATCH v2 7/8] xen/evtch: use smp barriers for user event ring Juergen Gross
2021-02-11 10:16 ` [PATCH v2 8/8] xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices Juergen Gross
2021-02-17 13:29 ` Ross Lagerwall
2021-02-18 11:46 ` Jürgen Groß
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