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From: Chengwen Feng <fengchengwen@huawei.com>
To: <thomas@monjalon.net>, <ferruh.yigit@intel.com>
Cc: <dev@dpdk.org>, <jerinj@marvell.com>, <ruifeng.wang@arm.com>,
	<viktorin@rehivetech.com>, <bruce.richardson@intel.com>,
	<Honnappa.Nagarahalli@arm.com>, <jerinjacobk@gmail.com>,
	<juraj.linkes@pantheon.tech>, <nd@arm.com>
Subject: [dpdk-dev] [PATCH v6 2/2] net/hns3: refactor SVE code compile method
Date: Wed, 19 May 2021 21:25:31 +0800	[thread overview]
Message-ID: <1621430731-27753-3-git-send-email-fengchengwen@huawei.com> (raw)
In-Reply-To: <1621430731-27753-1-git-send-email-fengchengwen@huawei.com>

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.

[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 | 21 ++++++++++++++++++++-
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 1d7a769..4ef20c6 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_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..5f9af9b 100644
--- a/drivers/net/hns3/meson.build
+++ b/drivers/net/hns3/meson.build
@@ -35,7 +35,26 @@ 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 cc.get_define('__ARM_FEATURE_SVE', args: machine_args) != '' and cc.check_header('arm_sve.h')
+        cflags += ['-DCC_SVE_SUPPORT']
         sources += files('hns3_rxtx_vec_sve.c')
+    elif cc.has_argument('-march=armv8.2-a+sve') and cc.check_header('arm_sve.h')
+        sve_cflags = ['-DCC_SVE_SUPPORT']
+        foreach flag: cflags
+            # filterout -march -mcpu -mtune
+            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


  parent reply	other threads:[~2021-05-19 13:29 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   ` Chengwen Feng [this message]
2021-05-19 15:02     ` [dpdk-dev] [PATCH v6 2/2] net/hns3: refactor SVE code compile method 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
2021-05-27  7:07       ` Fengchengwen
2021-06-12  7:09       ` fengchengwen

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