From: Jerin Jacob <jerinjacobk@gmail.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: "Bruce Richardson" <bruce.richardson@intel.com>,
dpdk-dev <dev@dpdk.org>,
"David Marchand" <david.marchand@redhat.com>,
"Ferruh Yigit" <ferruh.yigit@intel.com>,
"Olivier Matz" <olivier.matz@6wind.com>,
"Morten Brørup" <mb@smartsharesystems.com>,
"Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
"Andrew Rybchenko" <andrew.rybchenko@oktetlabs.ru>,
"Viacheslav Ovsiienko" <viacheslavo@nvidia.com>,
"Ajit Khaparde" <ajit.khaparde@broadcom.com>,
"Jerin Jacob" <jerinj@marvell.com>,
"Hemant Agrawal" <hemant.agrawal@nxp.com>,
"Ray Kinsella" <mdr@ashroe.eu>,
"Neil Horman" <nhorman@tuxdriver.com>,
"Nithin Dabilpuram" <ndabilpuram@marvell.com>,
"Kiran Kumar K" <kirankumark@marvell.com>
Subject: Re: [dpdk-dev] [PATCH 1/1] mbuf: move pool pointer in first half
Date: Mon, 9 Nov 2020 19:05:26 +0530 [thread overview]
Message-ID: <CALBAE1OGm2qJwt14Y1eDqRR6DO-GriipoqDJVAqZdGaOzPeYsw@mail.gmail.com> (raw)
In-Reply-To: <2304322.cEvxdTIR8G@thomas>
On Mon, Nov 9, 2020 at 6:29 PM Thomas Monjalon <thomas@monjalon.net> wrote:
>
> 09/11/2020 13:01, Jerin Jacob:
> > Hi @Thomas Monjalon
> >
> > Any specific reason why you removed the static assert from octeontx2.
>
> I have a build failure when cross-compiling for octeontx2.
I am trying the below command, I am not able to see any issue
meson build --cross-file config/arm/arm64_octeontx2_linux_gcc
Are you facing the issue with 32bit? Could you share the steps to
reproduce and gcc version?
>
> > I am not able to compilation issue with that static assert.
>
> There is no issue when compiling for x86.
>
> > The current vector driver assumes pool and tx offload needs to 2 DWORDS apart,
> > Which is the case before and after your change.
>
> You're right, pool and tx_offload are moved together.
> The only difference is passing the cache line frontier.
>
> > Please remove that static assert change, No issue from my side on this patch.
>
> I cannot remove it without fixing something else,
> maybe an issue in cache line alignment?
Can try the below fix. If the issue is seen with 32bit.
diff --git a/drivers/net/octeontx2/otx2_ethdev.c
b/drivers/net/octeontx2/otx2_ethdev.c
index 6cebbe677..66a4d429d 100644
--- a/drivers/net/octeontx2/otx2_ethdev.c
+++ b/drivers/net/octeontx2/otx2_ethdev.c
@@ -749,7 +749,7 @@ nix_tx_offload_flags(struct rte_eth_dev *eth_dev)
RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
offsetof(struct rte_mbuf, ol_flags) + 12);
RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, tx_offload) !=
- offsetof(struct rte_mbuf, pool) + 2 * sizeof(void *));
+ offsetof(struct rte_mbuf, pool) + 2 *
sizeof(uint64_t));
>
> > In general, it is too much effort to re-verify and measure performance
> > impact with
> > all the cases after RC2, I hope this will last mbuf change in this release.
>
> Yes it is the last change to mbuf layout,
> sorry for pushing all these changes so late.
>
>
>
next prev parent reply other threads:[~2020-11-09 13:36 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-07 15:53 Thomas Monjalon
2020-11-07 17:12 ` Jerin Jacob
2020-11-07 18:39 ` Thomas Monjalon
2020-11-07 19:05 ` Jerin Jacob
2020-11-07 20:33 ` Thomas Monjalon
2020-11-09 5:18 ` Jerin Jacob
2020-11-09 8:04 ` Thomas Monjalon
2020-11-09 8:27 ` Jerin Jacob
2020-11-09 9:47 ` Bruce Richardson
2020-11-09 12:01 ` Jerin Jacob
2020-11-09 12:59 ` Thomas Monjalon
2020-11-09 13:35 ` Jerin Jacob [this message]
2020-11-09 14:02 ` Thomas Monjalon
2020-11-09 14:08 ` Jerin Jacob
2020-11-09 14:42 ` Thomas Monjalon
2020-11-09 14:53 ` Jerin Jacob
2020-11-09 8:16 ` Morten Brørup
2020-11-09 10:06 ` [dpdk-dev] [dpdk-techboard] " Bruce Richardson
2020-11-09 10:21 ` Morten Brørup
2020-11-09 18:04 ` Stephen Hemminger
2020-11-10 7:15 ` Morten Brørup
2020-11-07 18:57 ` [dpdk-dev] " Morten Brørup
2020-11-09 10:08 ` Bruce Richardson
2020-11-09 10:30 ` Morten Brørup
2020-11-09 10:33 ` Ananyev, Konstantin
2020-11-09 10:36 ` Bruce Richardson
2020-11-09 11:24 ` Ananyev, Konstantin
2020-11-09 21:29 ` [dpdk-dev] [PATCH v2 0/2] move mbuf pool pointer Thomas Monjalon
2020-11-09 21:29 ` [dpdk-dev] [PATCH v2 1/2] drivers: disable OCTEON TX2 in 32-bit build Thomas Monjalon
2020-11-10 18:05 ` Jerin Jacob
2020-11-09 21:29 ` [dpdk-dev] [PATCH v2 2/2] mbuf: move pool pointer in first half Thomas Monjalon
2020-11-10 10:05 ` Morten Brørup
2020-11-10 10:44 ` Thomas Monjalon
2020-11-10 16:25 ` Olivier Matz
2020-11-10 18:06 ` Jerin Jacob
2020-11-12 14:39 ` Thomas Monjalon
2020-11-10 18:08 ` Stephen Hemminger
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