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From: Jerin Jacob <jerinjacobk@gmail.com>
To: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Cc: dpdk-dev <dev@dpdk.org>,
	 "Ruifeng Wang (Arm Technology China)" <ruifeng.wang@arm.com>,
	Jerin Jacob <jerinj@marvell.com>,
	Hemant Agrawal <hemant.agrawal@nxp.com>,
	Ajit Khaparde <ajit.khaparde@broadcom.com>,
	 Igor Chauskin <igorch@amazon.com>,
	Thomas Monjalon <thomas@monjalon.net>,
	 Slava Ovsiienko <viacheslavo@mellanox.com>,
	Andrew Rybchenko <arybchenko@solarflare.com>,
	 "Richardson, Bruce" <bruce.richardson@intel.com>,
	nd <nd@arm.com>
Subject: Re: [dpdk-dev] [PATCH v3 2/3] doc: update armv8-a IO barrier changes
Date: Sun, 5 Jul 2020 06:27:05 +0530	[thread overview]
Message-ID: <CALBAE1PhhZ5RUpLJXhASDLuWuSBUPBRCzHj-zrhHVkM0ePui5Q@mail.gmail.com> (raw)
In-Reply-To: <20200703185741.22184-2-honnappa.nagarahalli@arm.com>

On Sat, Jul 4, 2020 at 12:28 AM Honnappa Nagarahalli
<honnappa.nagarahalli@arm.com> wrote:
>
> Updated the use of DMB instruction in rte_*mb APIs for Armv8-a.
>
> Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
> ---
>  doc/guides/rel_notes/release_20_08.rst | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/doc/guides/rel_notes/release_20_08.rst b/doc/guides/rel_notes/release_20_08.rst
> index 5cbc4ce14..15c21996d 100644
> --- a/doc/guides/rel_notes/release_20_08.rst
> +++ b/doc/guides/rel_notes/release_20_08.rst
> @@ -56,6 +56,13 @@ New Features
>       Also, make sure to start the actual text at the margin.
>       =========================================================
>
> +* **rte_*mb APIs are updated to use DMB instruction.**

IMO, It is better to change to following as the end user can ignore
parsing the description if not interested in arm64.

rte_*mb APIs are updated to use DMB instruction for Armv8-a

With  above change:
Acked-by: Jerin Jacob <jerinj@marvell.com>

> +
> +  Armv8-a memory model has been strengthened to require other-multi-copy
> +  atomicity. This allows for using DMB instruction instead of DSB for IO
> +  barriers. rte_*mb APIs, for Armv8-a platforms, are changed to use DMB
> +  instruction to reflect this.
> +
>  * **Updated PCAP driver.**
>
>    Updated PCAP driver with new features and improvements, including:
> --
> 2.17.1
>

  reply	other threads:[~2020-07-05  0:57 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-13 12:38 [dpdk-dev] [PATCH RFC v1 0/6] barrier fix and optimization for mlx5 on aarch64 Gavin Hu
2020-02-13 12:38 ` [dpdk-dev] [PATCH RFC v1 1/6] net/mlx5: relax the barrier for UAR write Gavin Hu
2020-02-13 12:38 ` [dpdk-dev] [PATCH RFC v1 2/6] net/mlx5: use cio barrier before the BF WQE Gavin Hu
2020-02-13 12:38 ` [dpdk-dev] [PATCH RFC v1 3/6] net/mlx5: add missing barrier Gavin Hu
2020-02-13 12:38 ` [dpdk-dev] [PATCH RFC v1 4/6] net/mlx5: add descriptive comment for a barrier Gavin Hu
2020-02-13 12:38 ` [dpdk-dev] [PATCH RFC v1 5/6] net/mlx5: non-cacheable mapping defaulted for aarch64 Gavin Hu
2020-02-13 12:38 ` [dpdk-dev] [PATCH RFC v1 6/6] net/mlx5: relaxed ordering for multi-packet RQ buffer refcnt Gavin Hu
2020-04-10 16:41 ` [dpdk-dev] [PATCH RFC v2 0/7] introduce new barrier class and use it for mlx5 PMD Gavin Hu
2020-04-10 17:20   ` Andrew Rybchenko
2020-04-11  3:46     ` Gavin Hu
2020-04-13  9:51       ` Andrew Rybchenko
2020-04-13 16:46         ` Gavin Hu
2020-05-11 18:06   ` [dpdk-dev] [RFC] eal: adjust barriers for IO on Armv8-a Honnappa Nagarahalli
2020-05-12  6:18     ` Ruifeng Wang
2020-05-12  6:42       ` Jerin Jacob
2020-05-12  8:02         ` Ruifeng Wang
2020-05-12  8:28           ` Jerin Jacob
2020-05-12 21:44           ` Honnappa Nagarahalli
2020-05-13 14:49             ` Jerin Jacob
2020-05-14  1:02               ` Honnappa Nagarahalli
2020-06-27 19:12   ` [dpdk-dev] [PATCH v2] " Honnappa Nagarahalli
2020-06-27 19:25     ` Honnappa Nagarahalli
2020-06-30  5:13       ` Jerin Jacob
2020-07-03 18:57   ` [dpdk-dev] [PATCH v3 1/3] " Honnappa Nagarahalli
2020-07-03 18:57     ` [dpdk-dev] [PATCH v3 2/3] doc: update armv8-a IO barrier changes Honnappa Nagarahalli
2020-07-05  0:57       ` Jerin Jacob [this message]
2020-07-03 18:57     ` [dpdk-dev] [PATCH v3 3/3] doc: update deprecation of CIO barrier APIs Honnappa Nagarahalli
2020-07-05  0:57       ` Jerin Jacob
2020-07-07 20:19       ` Ajit Khaparde
2020-07-08 11:05       ` Ananyev, Konstantin
2020-07-06 23:43   ` [dpdk-dev] [PATCH v4 1/3] eal: adjust barriers for IO on Armv8-a Honnappa Nagarahalli
2020-07-06 23:43     ` [dpdk-dev] [PATCH v4 2/3] doc: update armv8-a IO barrier changes Honnappa Nagarahalli
2020-07-07  8:36       ` David Marchand
2020-07-07 18:37         ` Honnappa Nagarahalli
2020-07-06 23:43     ` [dpdk-dev] [PATCH v4 3/3] doc: update deprecation of CIO barrier APIs Honnappa Nagarahalli
2020-07-07  8:39       ` David Marchand
2020-07-07 20:14       ` David Christensen
2020-07-08 11:49       ` David Marchand
2020-04-10 16:41 ` [dpdk-dev] [PATCH RFC v2 1/7] eal: introduce new class of barriers for DMA use cases Gavin Hu
2020-04-10 16:41 ` [dpdk-dev] [PATCH RFC v2 2/7] net/mlx5: dmb for immediate doorbell ring on aarch64 Gavin Hu
2020-04-10 16:41 ` [dpdk-dev] [PATCH RFC v2 3/7] net/mlx5: relax barrier to order UAR writes " Gavin Hu
2020-04-10 16:41 ` [dpdk-dev] [PATCH RFC v2 4/7] net/mlx5: relax barrier for aarch64 Gavin Hu
2020-04-10 16:41 ` [dpdk-dev] [PATCH RFC v2 5/7] net/mlx5: add descriptive comment for a barrier Gavin Hu
2020-04-10 16:41 ` [dpdk-dev] [PATCH RFC v2 6/7] net/mlx5: relax ordering for multi-packet RQ buffer refcnt Gavin Hu
2020-06-23  8:26   ` [dpdk-dev] [PATCH v3] net/mlx5: relaxed " Phil Yang
2020-07-13  3:02     ` Phil Yang
2020-07-20 23:21       ` Alexander Kozyrev
2020-07-21  1:55         ` Phil Yang
2020-07-21  3:58           ` Alexander Kozyrev
2020-07-21  4:03             ` Honnappa Nagarahalli
2020-07-21  4:11               ` Alexander Kozyrev
2020-07-22 12:06                 ` Phil Yang
2020-07-23  4:47         ` Honnappa Nagarahalli
2020-07-23  6:11           ` Phil Yang
2020-07-23 16:53             ` Alexander Kozyrev
2020-07-27 14:52               ` Phil Yang
2020-08-06  2:43                 ` Alexander Kozyrev
2020-08-11  5:20                   ` Honnappa Nagarahalli
2020-09-02 21:52                     ` Alexander Kozyrev
2020-09-03  2:55                       ` Phil Yang
2020-09-09 13:29                         ` Alexander Kozyrev
2020-09-10  1:34                           ` Honnappa Nagarahalli
2020-09-03  2:53     ` [dpdk-dev] [PATCH v4] " Phil Yang
2020-09-10  1:30       ` Honnappa Nagarahalli
2020-09-10  1:36         ` Alexander Kozyrev
2020-09-29 15:22           ` Phil Yang
2020-09-30 12:44             ` Slava Ovsiienko
2020-09-30 12:52               ` Raslan Darawsheh
2020-09-30 13:57       ` Raslan Darawsheh
2020-04-10 16:41 ` [dpdk-dev] [PATCH RFC v2 7/7] doc: clarify one configuration in mlx5 guide Gavin Hu

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