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From: Thomas Monjalon <thomas@monjalon.net>
To: Olivier Matz <olivier.matz@6wind.com>
Cc: Shijith Thotton <sthotton@marvell.com>,
	dev@dpdk.org, pbhagavatula@marvell.com,
	Honnappa.Nagarahalli@arm.com, bruce.richardson@intel.com,
	jerinj@marvell.com, mb@smartsharesystems.com,
	stephen@networkplumber.org, david.marchand@redhat.com
Subject: Re: [PATCH v3 2/5] mbuf: add second dynamic field member for VA only build
Date: Wed, 28 Sep 2022 21:33:54 +0200	[thread overview]
Message-ID: <2275088.bcXerOTE6V@thomas> (raw)
In-Reply-To: <YzRDn0DNSOunIuYV@platinum>

28/09/2022 14:52, Olivier Matz:
> On Wed, Sep 28, 2022 at 09:24:51AM +0200, Thomas Monjalon wrote:
> > 21/09/2022 15:56, Shijith Thotton:
> > > mbuf physical address field is not used in builds which only uses VA. It
> > > is used to expand the dynamic field area.
> > > 
> > > Signed-off-by: Shijith Thotton <sthotton@marvell.com>
> > 
> > We cannot condition the use of the dynamic field.
> > I think it is enough justification to reject this patch.
> 
> I don't think it is an issue.
> 
> > And about adding a compilation option for IOVA in the first patch of this series,
> > I think it is not the direction the majority wants DPDK to go.
> > We tend to avoid compilation options.
> 
> In general, I agree that we don't want to have many custom compile-time options,
> especially if they impact ABI. It has several issues that have already been
> widely discussed.
> 
> However, in this specific case, we can suppose that removing buf_iova is a
> long-term goal (in years). Having this compile-time option is a way to test this
> approach, and progressively prepare the drivers to support it. Then, in few
> years (if we are still convinced), we may announce an abi breakage and switch to
> this new mode by default.

You convinced me.




  reply	other threads:[~2022-09-28 19:34 UTC|newest]

Thread overview: 88+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-30 16:25 [PATCH] mbuf: add mbuf physical address field to dynamic field Shijith Thotton
2022-06-30 16:45 ` Stephen Hemminger
2022-07-01 12:16   ` Shijith Thotton
2022-07-01 12:24   ` Shijith Thotton
2022-07-03  7:31     ` Morten Brørup
2022-07-04 14:00       ` Bruce Richardson
2022-08-03 15:34         ` [EXT] " Shijith Thotton
2022-08-29 15:16           ` [PATCH v1 0/4] mbuf dynamic field expansion Shijith Thotton
2022-09-07 13:43             ` [PATCH v2 0/5] " Shijith Thotton
2022-09-21  9:43               ` David Marchand
2022-09-21 14:01                 ` [EXT] " Shijith Thotton
2022-09-21 13:56               ` [PATCH v3 " Shijith Thotton
2022-09-21 13:56                 ` [PATCH v3 1/5] build: add meson option to configure IOVA mode as VA Shijith Thotton
2022-09-28 12:52                   ` Olivier Matz
2022-09-29  5:48                     ` [EXT] " Shijith Thotton
2022-09-21 13:56                 ` [PATCH v3 2/5] mbuf: add second dynamic field member for VA only build Shijith Thotton
2022-09-28  7:24                   ` Thomas Monjalon
2022-09-28 12:52                     ` Olivier Matz
2022-09-28 19:33                       ` Thomas Monjalon [this message]
2022-09-28 19:48                       ` Stephen Hemminger
2022-09-29  6:13                         ` [EXT] " Shijith Thotton
2022-09-28 12:52                   ` Olivier Matz
2022-09-21 13:56                 ` [PATCH v3 3/5] lib: move mbuf next pointer to first cache line Shijith Thotton
2022-09-21 14:07                   ` Morten Brørup
2022-09-28 12:52                   ` Olivier Matz
2022-09-29  6:14                     ` [EXT] " Shijith Thotton
2022-09-21 13:56                 ` [PATCH v3 4/5] drivers: mark Marvell cnxk PMDs work with IOVA as VA Shijith Thotton
2022-09-28 12:53                   ` Olivier Matz
2022-09-29  6:19                     ` [EXT] " Shijith Thotton
2022-09-29  7:44                       ` Olivier Matz
2022-09-29  8:10                         ` Shijith Thotton
2022-10-07 20:17                   ` Olivier Matz
2022-10-07 20:22                     ` [EXT] " Shijith Thotton
2022-09-21 13:56                 ` [PATCH v3 5/5] drivers: mark software " Shijith Thotton
2022-09-28  5:41                 ` [PATCH v3 0/5] mbuf dynamic field expansion Shijith Thotton
2022-09-28 12:52                 ` Olivier Matz
2022-09-29  4:51                   ` [EXT] " Shijith Thotton
2022-10-07 13:50                 ` Thomas Monjalon
2022-10-07 19:35                   ` [EXT] " Shijith Thotton
2022-10-07 19:30                 ` [PATCH v4 0/7] " Shijith Thotton
2022-10-07 19:30                   ` [PATCH v4 1/7] mbuf: add API to get and set mbuf physical address Shijith Thotton
2022-10-07 20:16                     ` Olivier Matz
2022-10-07 20:20                       ` [EXT] " Shijith Thotton
2022-10-07 19:30                   ` [PATCH v4 2/7] test/dma: use API to get mbuf data " Shijith Thotton
2022-10-07 20:17                     ` Olivier Matz
2022-10-07 19:30                   ` [PATCH v4 3/7] build: add meson option to configure IOVA mode as PA Shijith Thotton
2022-10-07 19:30                   ` [PATCH v4 4/7] mbuf: add second dynamic field member Shijith Thotton
2022-10-07 19:30                   ` [PATCH v4 5/7] lib: move mbuf next pointer to first cache line Shijith Thotton
2022-10-07 19:30                   ` [PATCH v4 6/7] drivers: mark cnxk PMDs work with IOVA as PA disabled Shijith Thotton
2022-10-07 19:30                   ` [PATCH v4 7/7] drivers: mark software " Shijith Thotton
2022-10-07 20:19                   ` [PATCH v4 0/7] mbuf dynamic field expansion Olivier Matz
2022-10-07 21:02                   ` [PATCH v5 " Shijith Thotton
2022-10-07 21:02                     ` [PATCH v5 1/7] mbuf: add API to get and set mbuf physical address Shijith Thotton
2022-10-07 21:20                       ` Stephen Hemminger
2022-10-07 21:02                     ` [PATCH v5 2/7] test/dma: use API to get mbuf data " Shijith Thotton
2022-10-07 21:02                     ` [PATCH v5 3/7] build: add meson option to configure IOVA mode as PA Shijith Thotton
2022-10-07 21:02                     ` [PATCH v5 4/7] mbuf: add second dynamic field member Shijith Thotton
2022-10-07 21:02                     ` [PATCH v5 5/7] lib: move mbuf next pointer to first cache line Shijith Thotton
2022-10-07 21:22                       ` Stephen Hemminger
2022-10-07 21:30                         ` [EXT] " Shijith Thotton
2022-10-07 21:02                     ` [PATCH v5 6/7] drivers: mark cnxk PMDs work with IOVA as PA disabled Shijith Thotton
2022-10-07 21:02                     ` [PATCH v5 7/7] drivers: mark software " Shijith Thotton
2022-10-09  9:34                     ` [PATCH v5 0/7] mbuf dynamic field expansion Thomas Monjalon
2022-09-07 13:43             ` [PATCH v2 1/5] build: add meson option to configure IOVA mode as VA Shijith Thotton
2022-09-07 15:31               ` Stephen Hemminger
2022-09-07 15:38                 ` Bruce Richardson
2022-09-07 21:33                   ` Morten Brørup
2022-09-07 13:43             ` [PATCH v2 2/5] mbuf: add second dynamic field member for VA only build Shijith Thotton
2022-09-07 13:43             ` [PATCH v2 3/5] lib: move mbuf next pointer to first cache line Shijith Thotton
2022-09-07 13:43             ` [PATCH v2 4/5] drivers: mark Marvell cnxk PMDs work with IOVA as VA Shijith Thotton
2022-09-07 13:43             ` [PATCH v2 5/5] drivers: mark software " Shijith Thotton
2022-08-29 15:16           ` [PATCH v1 1/4] build: add meson option to configure IOVA mode " Shijith Thotton
2022-08-29 18:18             ` Morten Brørup
2022-08-30  8:32               ` Bruce Richardson
2022-08-29 15:16           ` [PATCH v1 2/4] mbuf: add second dynamic field member for VA only build Shijith Thotton
2022-08-29 18:32             ` Morten Brørup
2022-08-30  8:35               ` Bruce Richardson
2022-08-30  8:41                 ` [EXT] " Pavan Nikhilesh Bhagavatula
2022-08-30 13:22                   ` Honnappa Nagarahalli
2022-09-07 13:55                     ` Shijith Thotton
2022-08-29 15:16           ` [PATCH v1 3/4] drivers: mark Marvell cnxk PMDs work with IOVA as VA Shijith Thotton
2022-08-29 15:16           ` [PATCH v1 4/4] drivers: mark software " Shijith Thotton
2022-08-30 13:07     ` [PATCH] mbuf: add mbuf physical address field to dynamic field Ferruh Yigit
2022-09-12 13:19       ` [EXT] " Shijith Thotton
2022-06-30 16:55 ` Bruce Richardson
2022-07-01  9:48   ` Olivier Matz
2022-07-01 11:53     ` Slava Ovsiienko
2022-07-01 12:01     ` [EXT] " Shijith Thotton

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