From: David Marchand <david.marchand@redhat.com>
To: Jerin Jacob <jerinjacobk@gmail.com>
Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
Phil Yang <phil.yang@arm.com>, Gage Eads <gage.eads@intel.com>,
dev <dev@dpdk.org>, Thomas Monjalon <thomas@monjalon.net>,
Hemant Agrawal <hemant.agrawal@nxp.com>,
Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
Gavin Hu <gavin.hu@arm.com>, nd <nd@arm.com>,
Bruce Richardson <bruce.richardson@intel.com>
Subject: Re: [dpdk-dev] [PATCH v11 1/3] eal/arm64: add 128-bit atomic compare exchange
Date: Mon, 21 Oct 2019 10:24:12 +0200 [thread overview]
Message-ID: <CAJFAV8zwp5eQ0vUnhiSz0ovTuh12Y4usnZqqqP2L+a9hd7RV9w@mail.gmail.com> (raw)
In-Reply-To: <CALBAE1Mj-wuJHV2UTkutsUhVH+w_hS5bnbMh0vOGiJstLaPUzw@mail.gmail.com>
On Fri, Oct 18, 2019 at 4:36 PM Jerin Jacob <jerinjacobk@gmail.com> wrote:
>
> On Fri, Oct 18, 2019 at 8:04 PM David Marchand
> <david.marchand@redhat.com> wrote:
> >
> > On Fri, Oct 18, 2019 at 4:25 PM Jerin Jacob <jerinjacobk@gmail.com> wrote:
> > >
> > > On Fri, Oct 18, 2019 at 7:46 PM David Marchand
> > > <david.marchand@redhat.com> wrote:
> > > >
> > > > On Fri, Oct 18, 2019 at 1:22 PM Phil Yang <phil.yang@arm.com> wrote:
> > > > >
> > > > > This patch adds the implementation of the 128-bit atomic compare
> > > > > exchange API on AArch64. Using 64-bit 'ldxp/stxp' instructions
> > > > > can perform this operation. Moreover, on the LSE atomic extension
> > > > > accelerated platforms, it implemented by 'casp' instructions for
> > > > > better performance.
> > > > >
> > > > > Since the '__ARM_FEATURE_ATOMICS' flag only supports GCC-9, so this
> > > > > patch adds a new config flag 'RTE_ARM_FEATURE_ATOMICS' to enable the
> > > > > 'cas' version on elder version compilers.
> > > >
> > > > Jerin, Phil,
> > > >
> > > > I am getting a build error on the octeontx2 target:
> > > >
> > > > {standard input}: Assembler messages:
> > > > {standard input}:672: Error: selected processor does not support `casp
> > > > x0,x1,x2,x3,[x4]'
> > > > {standard input}:690: Error: selected processor does not support
> > > > `caspa x0,x1,x2,x3,[x4]'
> > > > {standard input}:708: Error: selected processor does not support
> > > > `caspl x0,x1,x2,x3,[x4]'
> > > > {standard input}:726: Error: selected processor does not support
> > > > `caspal x0,x1,x2,x3,[x4]'
> > > > ninja: build stopped: subcommand failed.
> > > >
> > > > Looking into the meson logs, I can see:
> > > >
> > > > Native C compiler: ccache gcc (gcc 9.2.1 "gcc (GCC) 9.2.1 20190827
> > > > (Red Hat 9.2.1-1)")
> > > > Cross C compiler: aarch64-linux-gnu-gcc (gcc 8.2.1)
> > > > Host machine cpu family: aarch64
> > > > Host machine cpu: armv8-a
> > > > Target machine cpu family: aarch64
> > > > Target machine cpu: armv8-a
> > > > Build machine cpu family: x86_64
> > > > Build machine cpu: x86_64
> > > > ...
> > > > Message: Implementer : Cavium
> > > > Compiler for C supports arguments -mcpu=octeontx2: NO
> > >
> > > The compiler needs either +lse or mcpu=octeontx2 to generate casp instruction.
> > > Could you try this patch, I can submit a patch if it works for you.
> >
> > Ah cool, I was looking at the march stuff.
> > Tried your patch, it works fine.
> >
> > I'd say we can squash your bits in the current patch, since this was
> > unneeded before this patch.
> > Is this okay for you?
>
> Yup.
>
> >
> >
> > >
> > > [master][dpdk-next-net-mrvl] $ git diff
> > > diff --git a/config/arm/meson.build b/config/arm/meson.build
> > > index 979018e16..466522786 100644
> > > --- a/config/arm/meson.build
> > > +++ b/config/arm/meson.build
> > > @@ -96,7 +96,7 @@ machine_args_cavium = [
> > > ['0xa2', ['-mcpu=thunderxt81'], flags_thunderx_extra],
> > > ['0xa3', ['-mcpu=thunderxt83'], flags_thunderx_extra],
> > > ['0xaf', ['-march=armv8.1-a+crc+crypto','-mcpu=thunderx2t99'],
> > > flags_thunderx2_extra],
> > > - ['0xb2', ['-mcpu=octeontx2'], flags_octeontx2_extra]]
> > > + ['0xb2',
> > > ['-march=armv8.2-a+crc+crypto+lse','-mcpu=octeontx2'],
> > > flags_octeontx2_extra]]
> > >
> > > ## Arm implementer ID (ARM DDI 0487C.a, Section G7.2.106, Page G7-5321)
> > > impl_generic = ['Generic armv8', flags_generic, machine_args_generic]
> >
> > Thanks for the quick reply.
> >
Applied with above fix.
Thanks.
--
David Marchand
prev parent reply other threads:[~2019-10-21 8:24 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-23 2:41 [dpdk-dev] [PATCH v1 " Phil Yang
2019-06-23 2:41 ` [dpdk-dev] [PATCH v1 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-06-23 2:41 ` [dpdk-dev] [PATCH v1 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-06-23 3:15 ` [dpdk-dev] [PATCH v2 1/3] eal/arm64: add 128-bit atomic compare exchange Phil Yang
2019-06-23 3:15 ` [dpdk-dev] [PATCH v2 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-06-24 15:09 ` Eads, Gage
2019-06-24 15:29 ` Phil Yang (Arm Technology China)
2019-06-23 3:15 ` [dpdk-dev] [PATCH v2 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-06-24 15:15 ` Eads, Gage
2019-06-24 15:22 ` Phil Yang (Arm Technology China)
2019-06-24 14:46 ` [dpdk-dev] [PATCH v2 1/3] eal/arm64: add 128-bit atomic compare exchange Eads, Gage
2019-06-24 15:35 ` Phil Yang (Arm Technology China)
2019-06-28 8:11 ` [dpdk-dev] [PATCH v3 " Phil Yang
2019-06-28 8:11 ` [dpdk-dev] [PATCH v3 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-06-29 0:17 ` Eads, Gage
2019-07-19 4:03 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-06-28 8:11 ` [dpdk-dev] [PATCH v3 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-06-29 0:18 ` Eads, Gage
2019-07-19 4:18 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-07-19 4:42 ` Eads, Gage
2019-07-19 5:02 ` Jerin Jacob Kollanukkaran
2019-07-19 5:15 ` Phil Yang (Arm Technology China)
2019-07-03 12:25 ` [dpdk-dev] [EXT] [PATCH v3 1/3] eal/arm64: add 128-bit atomic compare exchange Jerin Jacob Kollanukkaran
2019-07-03 13:07 ` Jerin Jacob Kollanukkaran
2019-07-05 4:20 ` Honnappa Nagarahalli
2019-07-05 4:37 ` Pavan Nikhilesh Bhagavatula
2019-07-09 9:27 ` Phil Yang (Arm Technology China)
2019-07-09 11:14 ` Jerin Jacob Kollanukkaran
2019-07-19 6:24 ` Jerin Jacob Kollanukkaran
2019-07-19 11:01 ` Phil Yang (Arm Technology China)
2019-07-19 12:35 ` Jerin Jacob Kollanukkaran
2019-07-19 13:56 ` Phil Yang (Arm Technology China)
2019-07-19 14:50 ` Eads, Gage
2019-07-22 8:44 ` [dpdk-dev] [PATCH v4 " Phil Yang
2019-07-22 8:44 ` [dpdk-dev] [PATCH v4 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-07-22 8:44 ` [dpdk-dev] [PATCH v4 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-07-22 10:22 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-07-22 11:51 ` Phil Yang (Arm Technology China)
2019-07-22 10:20 ` [dpdk-dev] [EXT] [PATCH v4 1/3] eal/arm64: add 128-bit atomic compare exchange Jerin Jacob Kollanukkaran
2019-07-22 11:50 ` Phil Yang (Arm Technology China)
2019-07-22 13:06 ` [dpdk-dev] [PATCH v5 " Phil Yang
2019-07-22 13:06 ` [dpdk-dev] [PATCH v5 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-07-22 13:06 ` [dpdk-dev] [PATCH v5 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-07-22 14:14 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-07-22 15:19 ` Phil Yang (Arm Technology China)
2019-07-22 14:34 ` [dpdk-dev] " Eads, Gage
2019-07-22 14:43 ` Phil Yang (Arm Technology China)
2019-07-22 14:19 ` [dpdk-dev] [EXT] [PATCH v5 1/3] eal/arm64: add 128-bit atomic compare exchange Jerin Jacob Kollanukkaran
2019-07-22 16:23 ` Phil Yang (Arm Technology China)
2019-07-22 16:22 ` [dpdk-dev] [PATCH v6 " Phil Yang
2019-07-22 16:22 ` [dpdk-dev] [PATCH v6 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-07-22 16:22 ` [dpdk-dev] [PATCH v6 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-07-22 16:59 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-07-22 16:57 ` [dpdk-dev] [EXT] [PATCH v6 1/3] eal/arm64: add 128-bit atomic compare exchange Jerin Jacob Kollanukkaran
2019-07-23 3:28 ` Phil Yang (Arm Technology China)
2019-07-23 7:09 ` Jerin Jacob Kollanukkaran
2019-07-23 7:53 ` Phil Yang (Arm Technology China)
2019-07-23 5:57 ` [dpdk-dev] [PATCH v7 " Phil Yang
2019-07-23 5:57 ` [dpdk-dev] [PATCH v7 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-07-23 5:57 ` [dpdk-dev] [PATCH v7 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-07-23 7:05 ` [dpdk-dev] [PATCH v8 1/3] eal/arm64: add 128-bit atomic compare exchange jerinj
2019-07-23 7:05 ` [dpdk-dev] [PATCH v8 2/3] test/atomic: add 128b compare and swap test jerinj
2019-07-23 7:05 ` [dpdk-dev] [PATCH v8 3/3] eal/stack: enable lock-free stack for aarch64 jerinj
2019-08-14 8:27 ` [dpdk-dev] [PATCH v9 1/3] eal/arm64: add 128-bit atomic compare exchange Phil Yang
2019-08-14 8:27 ` [dpdk-dev] [PATCH v9 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-10-14 15:45 ` David Marchand
2019-10-15 11:32 ` Phil Yang (Arm Technology China)
2019-08-14 8:27 ` [dpdk-dev] [PATCH v9 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-10-14 15:45 ` David Marchand
2019-10-15 11:32 ` Phil Yang (Arm Technology China)
2019-10-14 15:43 ` [dpdk-dev] [PATCH v9 1/3] eal/arm64: add 128-bit atomic compare exchange David Marchand
2019-10-15 11:32 ` Phil Yang (Arm Technology China)
2019-10-15 12:16 ` David Marchand
2019-10-16 9:04 ` Phil Yang (Arm Technology China)
2019-10-17 12:45 ` David Marchand
2019-10-15 11:38 ` [dpdk-dev] [PATCH v10 " Phil Yang
2019-10-15 11:38 ` [dpdk-dev] [PATCH v10 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-10-15 11:38 ` [dpdk-dev] [PATCH v10 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-10-18 11:21 ` [dpdk-dev] [PATCH v11 1/3] eal/arm64: add 128-bit atomic compare exchange Phil Yang
2019-10-18 11:21 ` [dpdk-dev] [PATCH v11 2/3] test/atomic: add 128b compare and swap test Phil Yang
2019-10-21 8:25 ` David Marchand
2019-10-18 11:21 ` [dpdk-dev] [PATCH v11 3/3] eal/stack: enable lock-free stack for aarch64 Phil Yang
2019-10-21 8:26 ` David Marchand
2019-10-18 14:16 ` [dpdk-dev] [PATCH v11 1/3] eal/arm64: add 128-bit atomic compare exchange David Marchand
2019-10-18 14:24 ` Jerin Jacob
2019-10-18 14:33 ` David Marchand
2019-10-18 14:36 ` Jerin Jacob
2019-10-21 8:24 ` David Marchand [this message]
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