DPDK patches and discussions
 help / color / mirror / Atom feed
From: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
To: "jerinj@marvell.com" <jerinj@marvell.com>,
	"yskoh@mellanox.com" <yskoh@mellanox.com>
Cc: "thomas@monjalon.net" <thomas@monjalon.net>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"bruce.richardson@intel.com" <bruce.richardson@intel.com>,
	Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>,
	Shahaf Shuler <shahafs@mellanox.com>,
	"Gavin Hu (Arm Technology China)" <Gavin.Hu@arm.com>,
	 "stable@dpdk.org" <stable@dpdk.org>,
	Luca Boccassi <bluca@debian.org>, nd <nd@arm.com>,
	nd <nd@arm.com>
Subject: Re: [dpdk-dev] [dpdk-stable] [PATCH v2] build: disable armv8 crypto extension
Date: Tue, 7 May 2019 11:03:37 +0000	[thread overview]
Message-ID: <VE1PR08MB5149588FD564F972C35D511E98310@VE1PR08MB5149.eurprd08.prod.outlook.com> (raw)
Message-ID: <20190507110337.vHzG3WNSHlcdnw7iQkgijiCyKvZdBh7RU1eiu7KYc5Q@z> (raw)
In-Reply-To: <BYAPR18MB2424305090CD8C3E65F85212C8310@BYAPR18MB2424.namprd18.prod.outlook.com>

> > Subject: [EXT] Re: [dpdk-stable] [PATCH v2] build: disable armv8
> > crypto extension
> >
> > > On May 3, 2019, at 10:50 AM, Yongseok Koh <yskoh@mellanox.com>
> > wrote:
> > >
> > >> I think this change might have an impact on the existing users.
> > >> Does this change need to be documented somewhere (at least in the
> > >> release
> > notes)?
> > >
> > > Practically, there would be no impact. Even if user's app makes use
> > > of crypto instructions, the build config of the app should have the flag.
> >
> > On IRC, I could see you concerned about the case where user app
> > derives build flags from DPDK like apps under the examples directory.
> > Yes, that's a valid concern.
> 
> Is there any DPDK example application would depend on the armv8 crypto
> flags? IMO, None of the applications are directly using armv8 crypto
It is not about DPDK's example application. We have control over that.

> instruction. Even such as comes for any external DPDK app which is not in
> dpdk.org tree then it can be added in APP makefile.
> IMO, app writes should be aware of the need for using +crypto if he/she
> using the crypto instruction.
Agree. But, it might be that the app writer might have depended on the +crypto coming from DPDK build system, in which case, she/he needs to know the change through release notes?

I do not think it needs to be documented anywhere else.

> 
> >
> > Thomas/Jerin, where could be the best spot to document it? Just
> > release note?
> > I think release note would be fine.
> 


  parent reply	other threads:[~2019-05-07 11:03 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-02  1:58 [dpdk-dev] [PATCH 1/2] build: add option for " Yongseok Koh
2019-05-02  1:58 ` Yongseok Koh
2019-05-02  1:58 ` [dpdk-dev] [PATCH 2/2] mk: disable armv8 crypto extension for Mellanox BlueField Yongseok Koh
2019-05-02  1:58   ` Yongseok Koh
2019-05-02  4:12   ` Honnappa Nagarahalli
2019-05-02  4:12     ` Honnappa Nagarahalli
2019-05-02  5:40     ` Yongseok Koh
2019-05-02  5:40       ` Yongseok Koh
2019-05-03  4:01       ` Honnappa Nagarahalli
2019-05-03  4:01         ` Honnappa Nagarahalli
2019-05-02  4:13 ` [dpdk-dev] [PATCH 1/2] build: add option for armv8 crypto extension Honnappa Nagarahalli
2019-05-02  4:13   ` Honnappa Nagarahalli
2019-05-02  5:46   ` Yongseok Koh
2019-05-02  5:46     ` Yongseok Koh
2019-05-02 10:00     ` Jerin Jacob Kollanukkaran
2019-05-02 10:00       ` Jerin Jacob Kollanukkaran
2019-05-03  3:57     ` Honnappa Nagarahalli
2019-05-03  3:57       ` Honnappa Nagarahalli
2019-05-03  9:57       ` Yongseok Koh
2019-05-03  9:57         ` Yongseok Koh
2019-05-03 12:28 ` [dpdk-dev] [PATCH v2] build: disable " Yongseok Koh
2019-05-03 12:28   ` Yongseok Koh
2019-05-03 15:02   ` Honnappa Nagarahalli
2019-05-03 15:02     ` Honnappa Nagarahalli
2019-05-03 16:10     ` Honnappa Nagarahalli
2019-05-03 16:10       ` Honnappa Nagarahalli
2019-05-03 17:50       ` Yongseok Koh
2019-05-03 17:50         ` Yongseok Koh
2019-05-06 21:46         ` [dpdk-dev] [dpdk-stable] " Yongseok Koh
2019-05-06 21:46           ` Yongseok Koh
2019-05-07  7:59           ` Jerin Jacob Kollanukkaran
2019-05-07  7:59             ` Jerin Jacob Kollanukkaran
2019-05-07 11:03             ` Honnappa Nagarahalli [this message]
2019-05-07 11:03               ` Honnappa Nagarahalli
2019-05-07 12:02               ` Jerin Jacob Kollanukkaran
2019-05-07 12:02                 ` Jerin Jacob Kollanukkaran
2019-05-03 22:13   ` [dpdk-dev] " Dharmik Thakkar
2019-05-03 22:13     ` Dharmik Thakkar
2019-05-06 21:41     ` Yongseok Koh
2019-05-06 21:41       ` Yongseok Koh
2019-05-07 21:11 ` [dpdk-dev] [PATCH v3] " Yongseok Koh
2019-05-07 21:11   ` Yongseok Koh
2019-05-13 19:26   ` Honnappa Nagarahalli
2019-05-13 19:26     ` Honnappa Nagarahalli
2019-06-03 23:11     ` Thomas Monjalon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=VE1PR08MB5149588FD564F972C35D511E98310@VE1PR08MB5149.eurprd08.prod.outlook.com \
    --to=honnappa.nagarahalli@arm.com \
    --cc=Gavin.Hu@arm.com \
    --cc=bluca@debian.org \
    --cc=bruce.richardson@intel.com \
    --cc=dev@dpdk.org \
    --cc=jerinj@marvell.com \
    --cc=nd@arm.com \
    --cc=pbhagavatula@marvell.com \
    --cc=shahafs@mellanox.com \
    --cc=stable@dpdk.org \
    --cc=thomas@monjalon.net \
    --cc=yskoh@mellanox.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).