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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 v8 1/2] config/arm: select most suitable -march for kunpeng soc
Date: Mon, 24 May 2021 21:23:21 +0800	[thread overview]
Message-ID: <1621862602-51782-2-git-send-email-fengchengwen@huawei.com> (raw)
In-Reply-To: <1621862602-51782-1-git-send-email-fengchengwen@huawei.com>

Currently, the soc_kunpeng930 declares '-march=armv8.2-a+crypto+sve',
but some compiler doesn't recognize the march because it doesn't
support sve.

To solve this bug we use the following scheme:
1. Define 'march_base' tuple which defines support march, it should
arrange from lower to higher.
e.g. 'march_base': ['-march=armv8.1-a', '-march=armv8.2-a']
2. Define 'march_feature' tuple which defines support feature.
e.g. 'march_feature': ['crypto', 'sve']
Note: If user defined 'march_feature', it also needs to define a valid
'march_base' because 'march_feature' depends on 'march_base' when
checking validity.
3. Select the most suitable march+feature combination based on
'march_base' and 'march_feature' tuples.
4. Use the selected march+feature combination as the default
machine_args.

Fixes: 7cf32a22b240 ("config/arm: add Hisilicon kunpeng")

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
---
 config/arm/meson.build | 31 +++++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

diff --git a/config/arm/meson.build b/config/arm/meson.build
index 3f34ec9..044812f 100644
--- a/config/arm/meson.build
+++ b/config/arm/meson.build
@@ -158,7 +158,9 @@ implementer_hisilicon = {
             ]
         },
         '0xd02': {
-            'machine_args': ['-march=armv8.2-a+crypto+sve'],
+            'march_base': ['-march=armv8.2-a'],
+            'march_feature': ['crypto', 'sve'],
+            'machine_args': [],
             'flags': [
                 ['RTE_MACHINE', '"Kunpeng 930"'],
                 ['RTE_ARM_FEATURE_ATOMICS', true],
@@ -449,8 +451,33 @@ else
     # add/overwrite flags in the proper order
     dpdk_flags = flags_common + implementer_config['flags'] + part_number_config.get('flags', []) + soc_flags
 
+    # select the most suitable march+feature combination
+    machine_march = []
+    if part_number_config.has_key('march_base')
+        tmp_machine_march = ''
+        march_valid = false
+        foreach march: part_number_config['march_base']
+            if cc.has_argument(march)
+                tmp_machine_march = march # Set the higher supported march as possible
+                march_valid = true
+            endif
+        endforeach
+        # select feature only when march valid
+        if march_valid and part_number_config.has_key('march_feature')
+            foreach feature: part_number_config['march_feature']
+                tmp_feature = tmp_machine_march + '+' + feature
+                if cc.has_argument(tmp_feature)
+                    tmp_machine_march = tmp_feature # Set the more supported feature as possible
+                endif
+            endforeach
+        endif
+        if march_valid
+            machine_march = [tmp_machine_march]
+        endif
+    endif
+
     # apply supported machine args
-    machine_args = [] # Clear previous machine args
+    machine_args = machine_march # Init with machine march which set above
     foreach flag: part_number_config['machine_args']
         if cc.has_argument(flag)
             machine_args += flag
-- 
2.8.1


  reply	other threads:[~2021-05-24 13:26 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   ` Chengwen Feng [this message]
2021-06-17  7:03     ` [dpdk-dev] [PATCH v8 1/2] config/arm: select most suitable -march for kunpeng soc 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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