Re: [dpdk-dev] [PATCH] buildtools: Check GCC version to avoid GCC 6.3.0 avx512 bug
From: Stephen Hemminger <stephen@networkplumber.org>
Date: 2021-07-18 01:08:11
On Sat, 17 Jul 2021 23:13:04 +0100 Liang Ma [off-list ref] wrote:
On Sat, Jul 17, 2021 at 10:48:49AM -0700, Stephen Hemminger wrote:quoted
On Sat, 17 Jul 2021 18:08:30 +0100 Liang Ma [off-list ref] wrote:quoted
From: Liang Ma <redacted> GCC 6.3.0 has a known bug which related to _mm512_extracti64x4_epi64. Please reference https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82887 Some DPDK PMD avx512 version heavily use _mm512_extracti64x4_epi6, which casue building failure with debug buildtype. Therefore, it's helpful to disable avx512 for GCC 6.3.0 Bugzilla ID: 717 Fixes: e6a6a138919f (net/i40e: add AVX512 vector path) Fixes: 808a17b3c1e6 (net/ice: add Rx AVX512 offload path) Fixes: 4b64ccb328c9 (net/iavf: fix VLAN extraction in AVX512 path) Cc: stable@dpdk.org Reported-by: Liang Ma <redacted> Signed-off-by: Liang Ma <redacted>What distro still has GCC 6.3.0?For example Debian 9.x
Ok, thanks. Is there a bug fix in Debian LTS yet?