From: "Juraj Linkeš" <juraj.linkes@pantheon.tech>
To: bruce.richardson@intel.com, thomas@monjalon.net,
Ruifeng.Wang@arm.com, Honnappa.Nagarahalli@arm.com,
jerinjacobk@gmail.com, ferruh.yigit@intel.com
Cc: dev@dpdk.org, "Juraj Linkeš" <juraj.linkes@pantheon.tech>
Subject: [dpdk-dev] [RFC PATCH v2] config/arm: replace native machine args
Date: Tue, 2 Feb 2021 10:05:27 +0100 [thread overview]
Message-ID: <1612256727-9724-1-git-send-email-juraj.linkes@pantheon.tech> (raw)
In-Reply-To: <1612191313-7654-1-git-send-email-juraj.linkes@pantheon.tech>
There are compiler issues when building with -mcpu=native with popular
compilers, such as GCC-8.4:
In file included from ../lib/librte_eal/arm/include/rte_vect.h:11,
from ../lib/librte_net/net_crc_neon.c:10:
../lib/librte_net/net_crc_neon.c: In function ‘crcr32_folding_round’:
/usr/lib/gcc/aarch64-linux-gnu/8/include/arm_neon.h:26094:1: error:
inlining failed in call to always_inline ‘vmull_p64’: target
specific option mismatch
vmull_p64 (poly64_t a, poly64_t b)
^~~~~~~~~
../lib/librte_net/net_crc_neon.c:50:20: note: called from here
uint64x2_t tmp1 = vreinterpretq_u64_p128(vmull_p64(
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vgetq_lane_p64(vreinterpretq_p64_u64(fold), 0),
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vgetq_lane_p64(vreinterpretq_p64_u64(precomp), 1)));
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
and clang:
gcc -E -dM -mcpu="native" - < /dev/null | grep __ARM_FEATURE_ATOMICS
clang-9 -E -dM -mcpu="native" - < /dev/null | grep __ARM_FEATURE_ATOMICS
<no output> # no clang support
Fix this by always specifying the proper machine args and never using
the native flags.
Fixes: 78ac8eac7e8a ("config/arm: use native machine build arguments")
Cc: juraj.linkes@pantheon.tech
Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
---
config/arm/meson.build | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/config/arm/meson.build b/config/arm/meson.build
index f207e5a288..f948768578 100644
--- a/config/arm/meson.build
+++ b/config/arm/meson.build
@@ -24,7 +24,6 @@ flags_common = [
['RTE_ARCH_ARM64', true],
['RTE_CACHE_LINE_SIZE', 128]
]
-native_machine_args = ['-mcpu=native']
## Part numbers are specific to Arm implementers
# implementer specific aarch64 flags have middle priority
@@ -193,7 +192,6 @@ if dpdk_conf.get('RTE_ARCH_32')
machine_args += '-mfpu=neon'
else
# aarch64 build
- use_native_machine_args = false
if not meson.is_cross_build()
if machine == 'default'
# default build
@@ -213,7 +211,6 @@ else
else
error('Error when getting Arm Implementer ID and part number.')
endif
- use_native_machine_args = true
endif
else
# cross build
@@ -249,12 +246,7 @@ else
# apply supported machine args
machine_args = [] # Clear previous machine args
- if use_native_machine_args
- candidate_machine_args = native_machine_args
- else
- candidate_machine_args = part_number_config['machine_args']
- endif
- foreach flag: candidate_machine_args
+ foreach flag: part_number_config['machine_args']
if cc.has_argument(flag)
machine_args += flag
endif
--
2.20.1
next prev parent reply other threads:[~2021-02-02 9:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-01 14:55 [dpdk-dev] [RFC PATCH v1] config/arm: fix " Juraj Linkeš
2021-02-01 15:16 ` Thomas Monjalon
2021-02-02 7:40 ` Juraj Linkeš
2021-02-02 9:05 ` Juraj Linkeš [this message]
2021-02-02 9:25 ` [dpdk-dev] [RFC PATCH v2] config/arm: replace " Thomas Monjalon
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