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From: Ruifeng Wang <Ruifeng.Wang@arm.com>
To: Chengwen Feng <fengchengwen@huawei.com>,
	"thomas@monjalon.net" <thomas@monjalon.net>,
	"ferruh.yigit@intel.com" <ferruh.yigit@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	"jerinj@marvell.com" <jerinj@marvell.com>,
	 "viktorin@rehivetech.com" <viktorin@rehivetech.com>,
	"bruce.richardson@intel.com" <bruce.richardson@intel.com>,
	Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
	"jerinjacobk@gmail.com" <jerinjacobk@gmail.com>,
	"juraj.linkes@pantheon.tech" <juraj.linkes@pantheon.tech>,
	nd <nd@arm.com>, nd <nd@arm.com>
Subject: Re: [dpdk-dev] [PATCH v8 2/2] net/hns3: refactor SVE code compile method
Date: Tue, 25 May 2021 06:04:21 +0000	[thread overview]
Message-ID: <AM5PR0802MB24654148281021D3C25395709E259@AM5PR0802MB2465.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <1621862602-51782-3-git-send-email-fengchengwen@huawei.com>

> -----Original Message-----
> From: Chengwen Feng <fengchengwen@huawei.com>
> Sent: Monday, May 24, 2021 9:23 PM
> To: thomas@monjalon.net; ferruh.yigit@intel.com
> Cc: dev@dpdk.org; jerinj@marvell.com; Ruifeng Wang
> <Ruifeng.Wang@arm.com>; viktorin@rehivetech.com;
> bruce.richardson@intel.com; Honnappa Nagarahalli
> <Honnappa.Nagarahalli@arm.com>; jerinjacobk@gmail.com;
> juraj.linkes@pantheon.tech; nd <nd@arm.com>
> Subject: [PATCH v8 2/2] net/hns3: refactor SVE code compile method
> 
> Currently, the SVE code is compiled only when -march supports SVE (e.g. '-
> march=armv8.2a+sve'), there maybe some problem[1] with this approach.
> 
> The solution:
> a. If the minimum instruction set support SVE then compiles it.
> b. Else if the compiler support SVE then compiles it.
> c. Otherwise don't compile it.
> 
> Note: this patch also fixes compile error with gcc8.3 + '-march=armv8.a+sve',
> the error is arm_sve.h no such file or directory.
> 
> [1] https://mails.dpdk.org/archives/dev/2021-April/208189.html
> 
> Fixes: 8c25b02b082a ("net/hns3: fix enabling SVE Rx/Tx")
> Fixes: 952ebacce4f2 ("net/hns3: support SVE Rx")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> ---
>  drivers/net/hns3/hns3_rxtx.c |  2 +-
>  drivers/net/hns3/meson.build | 20 +++++++++++++++++++-
>  2 files changed, 20 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
> index 1d7a769..9b2f082 100644
> --- a/drivers/net/hns3/hns3_rxtx.c
> +++ b/drivers/net/hns3/hns3_rxtx.c
> @@ -2808,7 +2808,7 @@ hns3_get_default_vec_support(void)
>  static bool
>  hns3_get_sve_support(void)
>  {
> -#if defined(RTE_ARCH_ARM64) && defined(__ARM_FEATURE_SVE)
> +#if defined(CC_SVE_ACLE_SUPPORT)
>  	if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_256)
>  		return false;
>  	if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SVE))
> diff --git a/drivers/net/hns3/meson.build b/drivers/net/hns3/meson.build
> index 53c7df7..aabcf23 100644
> --- a/drivers/net/hns3/meson.build
> +++ b/drivers/net/hns3/meson.build
> @@ -35,7 +35,25 @@ deps += ['hash']
> 
>  if arch_subdir == 'arm' and dpdk_conf.get('RTE_ARCH_64')
>      sources += files('hns3_rxtx_vec.c')
> -    if cc.get_define('__ARM_FEATURE_SVE', args: machine_args) != ''
> +
> +    # compile SVE when:
> +    # a. support SVE in minimum instruction set baseline
> +    # b. it's not minimum instruction set, but compiler support
> +    if dpdk_conf.has('CC_SVE_ACLE_SUPPORT')
>          sources += files('hns3_rxtx_vec_sve.c')
> +    elif cc.has_argument('-march=armv8.2-a+sve') and
> cc.check_header('arm_sve.h')
> +        cflags += ['-DCC_SVE_ACLE_SUPPORT=1']
> +        sve_cflags = []
> +        foreach flag: cflags
> +            if not (flag.startswith('-march=') or flag.startswith('-mcpu=') or
> flag.startswith('-mtune='))
> +                sve_cflags += flag
> +            endif
> +        endforeach
> +        hns3_sve_lib = static_library('hns3_sve_lib',
> +                        'hns3_rxtx_vec_sve.c',
> +                        dependencies: [static_rte_ethdev],
> +                        include_directories: includes,
> +                        c_args: [sve_cflags, '-march=armv8.2-a+sve'])
> +        objs += hns3_sve_lib.extract_objects('hns3_rxtx_vec_sve.c')
>      endif
>  endif
> --
> 2.8.1

Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>

  reply	other threads:[~2021-05-25  6:04 UTC|newest]

Thread overview: 80+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-12  8:28 [dpdk-dev] [PATCH 0/2] bugfix for Kunpeng930 SVE compile Chengwen Feng
2021-05-12  8:28 ` [dpdk-dev] [PATCH 1/2] config/arm: add non-SVE march for soc kunpeng930 Chengwen Feng
2021-05-12  8:44   ` Jerin Jacob
2021-05-12 23:00     ` Honnappa Nagarahalli
2021-05-13  4:49       ` fengchengwen
2021-05-12  8:28 ` [dpdk-dev] [PATCH 2/2] net/hns3: refactor SVE code compile method Chengwen Feng
2021-05-12 23:12   ` Honnappa Nagarahalli
2021-05-12 23:21     ` Honnappa Nagarahalli
2021-05-13  0:51       ` fengchengwen
2021-05-13 20:42         ` Honnappa Nagarahalli
2021-05-13 10:04     ` Bruce Richardson
2021-05-13  4:41 ` [dpdk-dev] [PATCH v2 0/2] bugfix for Kunpeng SVE compile Chengwen Feng
2021-05-13  4:41   ` [dpdk-dev] [PATCH v2 1/2] config/arm: select best -march parameter for kunpeng soc Chengwen Feng
2021-05-13  4:41   ` [dpdk-dev] [PATCH v2 2/2] net/hns3: refactor SVE code compile method Chengwen Feng
2021-05-13  6:16 ` [dpdk-dev] [PATCH v3 0/2] bugfix for Kunpeng SVE compile Chengwen Feng
2021-05-13  6:16   ` [dpdk-dev] [PATCH v3 1/2] config/arm: select most suitable -march for kunpeng soc Chengwen Feng
2021-05-13  6:16   ` [dpdk-dev] [PATCH v3 2/2] net/hns3: refactor SVE code compile method Chengwen Feng
2021-05-13 13:08 ` [dpdk-dev] [PATCH v4 0/2] bugfix for Kunpeng SVE compile Chengwen Feng
2021-05-13 13:08   ` [dpdk-dev] [PATCH v4 1/2] config/arm: select most suitable -march for kunpeng soc Chengwen Feng
2021-05-13 15:24     ` Jerin Jacob
2021-05-13 23:12       ` Honnappa Nagarahalli
2021-05-14 10:23         ` fengchengwen
2021-05-18 13:25           ` Honnappa Nagarahalli
2021-05-18 13:45             ` Jerin Jacob
2021-05-13 13:08   ` [dpdk-dev] [PATCH v4 2/2] net/hns3: refactor SVE code compile method Chengwen Feng
2021-05-13 22:19     ` Honnappa Nagarahalli
2021-05-14  2:53       ` fengchengwen
2021-05-14  9:53 ` [dpdk-dev] [PATCH v5 0/2] bugfix for Kunpeng SVE compile Chengwen Feng
2021-05-14  9:53   ` [dpdk-dev] [PATCH v5 1/2] config/arm: select most suitable -march for kunpeng soc Chengwen Feng
2021-05-14  9:53   ` [dpdk-dev] [PATCH v5 2/2] net/hns3: refactor SVE code compile method Chengwen Feng
2021-05-14 14:12     ` Honnappa Nagarahalli
2021-05-18 12:41       ` fengchengwen
2021-05-18 13:11         ` Honnappa Nagarahalli
2021-05-18 13:12           ` Honnappa Nagarahalli
2021-05-18 13:24         ` Ferruh Yigit
2021-05-18 16:27       ` Ferruh Yigit
2021-05-19  0:23         ` fengchengwen
2021-05-19  8:08         ` David Marchand
2021-05-19  9:27           ` Ferruh Yigit
2021-05-19 12:16             ` fengchengwen
2021-05-19 12:37               ` David Marchand
2021-05-19 13:35                 ` fengchengwen
2021-05-18 14:40     ` Ferruh Yigit
2021-05-18 15:15       ` Bruce Richardson
2021-05-18 16:12         ` Ferruh Yigit
2021-05-18 15:48       ` Honnappa Nagarahalli
2021-05-18 16:00         ` Ferruh Yigit
2021-05-18 16:12           ` Honnappa Nagarahalli
2021-05-18 16:37             ` Ferruh Yigit
2021-05-19  0:18               ` fengchengwen
2021-05-19 13:25 ` [dpdk-dev] [PATCH v6 0/2] bugfix for Kunpeng SVE compile Chengwen Feng
2021-05-19 13:25   ` [dpdk-dev] [PATCH v6 1/2] config/arm: select most suitable -march for kunpeng soc Chengwen Feng
2021-05-19 14:05     ` Jerin Jacob
2021-05-20 22:38       ` Honnappa Nagarahalli
2021-05-19 13:25   ` [dpdk-dev] [PATCH v6 2/2] net/hns3: refactor SVE code compile method Chengwen Feng
2021-05-19 15:02     ` Ferruh Yigit
2021-05-20  1:11       ` fengchengwen
2021-05-20  7:57         ` Ferruh Yigit
2021-05-20  8:24     ` Ruifeng Wang
2021-05-20 10:55       ` fengchengwen
2021-05-21  5:21         ` Ruifeng Wang
2021-05-21  6:53           ` fengchengwen
2021-05-24  5:38             ` Ruifeng Wang
2021-05-24  8:43               ` fengchengwen
2021-05-24 10:03                 ` Ruifeng Wang
2021-05-24 13:15                   ` fengchengwen
2021-05-24 13:12 ` [dpdk-dev] [PATCH v7 0/2] bugfix for Kunpeng SVE compile Chengwen Feng
2021-05-24 13:12   ` [dpdk-dev] [PATCH v7 1/2] config/arm: select most suitable -march for kunpeng soc Chengwen Feng
2021-05-24 13:12   ` [dpdk-dev] [PATCH v7 2/2] net/hns3: refactor SVE code compile method Chengwen Feng
2021-05-24 13:23 ` [dpdk-dev] [PATCH v8 0/2] bugfix for Kunpeng SVE compile Chengwen Feng
2021-05-24 13:23   ` [dpdk-dev] [PATCH v8 1/2] config/arm: select most suitable -march for kunpeng soc Chengwen Feng
2021-06-17  7:03     ` Thomas Monjalon
2021-06-17 23:33       ` Honnappa Nagarahalli
2021-06-21  0:52         ` fengchengwen
2021-06-23  8:08           ` Thomas Monjalon
2021-06-23  8:24             ` fengchengwen
2021-05-24 13:23   ` [dpdk-dev] [PATCH v8 2/2] net/hns3: refactor SVE code compile method Chengwen Feng
2021-05-25  6:04     ` Ruifeng Wang [this message]
2021-05-27  7:07       ` Fengchengwen
2021-06-12  7:09       ` fengchengwen

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