From: Jerin Jacob <jerinjacobk@gmail.com>
To: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>
Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
"dev@dpdk.org" <dev@dpdk.org>, dpdk stable <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3 1/5] event/octeontx2: fix TIM HW race condition
Date: Sat, 23 Nov 2019 18:00:38 +0900 [thread overview]
Message-ID: <CALBAE1NC3BGwS5e4-82JLj4ZunGPJkW80KTuv98fGL5tBHJOHg@mail.gmail.com> (raw)
In-Reply-To: <CY4PR1801MB18635DADBAA46FEDD5640C4FDE490@CY4PR1801MB1863.namprd18.prod.outlook.com>
On Sat, Nov 23, 2019 at 1:07 AM Pavan Nikhilesh Bhagavatula
<pbhagavatula@marvell.com> wrote:
>
> +Cc: stable@dpdk.org
>
> >-----Original Message-----
> >From: pbhagavatula@marvell.com <pbhagavatula@marvell.com>
> >Sent: Friday, November 22, 2019 9:14 PM
> >To: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Pavan Nikhilesh
> >Bhagavatula <pbhagavatula@marvell.com>
> >Cc: dev@dpdk.org
> >Subject: [dpdk-dev] [PATCH v3 1/5] event/octeontx2: fix TIM HW race
> >condition
> >
> >From: Pavan Nikhilesh <pbhagavatula@marvell.com>
> >
> >Fix HW race condition observed when timeout resolution is low (<5us).
> >When HW traverses a given TIM bucket it will clear chunk_remainder,
> >but since SW always decreases the chunk_remainder at the start of the
> >arm routine it might cause a race where SW updates chunk_remainder
> >after HW has cleared it that lead to nasty side effects.
> >
> >Fixes: 95e4e4ec7469 ("event/octeontx2: add timer arm timeout burst")
> >
> >Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Series applied to dpdk-next-eventdev/master. Thanks.
prev parent reply other threads:[~2019-11-23 9:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-22 15:44 pbhagavatula
2019-11-22 15:44 ` [dpdk-dev] [PATCH v3 2/5] event/octeontx2: use opposite bucket to store current chunk pbhagavatula
2019-11-22 15:44 ` [dpdk-dev] [PATCH v3 3/5] event/octeontx2: improve chunk pool performance pbhagavatula
2019-11-22 15:44 ` [dpdk-dev] [PATCH v3 4/5] event/octeontx2: update SSO buffers based on timer count pbhagavatula
2019-11-22 15:44 ` [dpdk-dev] [PATCH v3 5/5] event/octeontx2: update start timestamp periodically pbhagavatula
2019-11-22 16:07 ` [dpdk-dev] [PATCH v3 1/5] event/octeontx2: fix TIM HW race condition Pavan Nikhilesh Bhagavatula
2019-11-23 9:00 ` Jerin Jacob [this message]
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