On Wed, 3 Sep 2025 13:32:52 +0200 Thierry Herbelot <thierry.herbe...@6wind.com> wrote:
> The qede PMD stopped working under Ubuntu-24.04 (using gcc-13) when > compiled with -O3 (default level for all DPDK code). A bug is opened > for this issue (see Link). > > A first workaround is to just disable all optimizations (-O0), which > restores packet Rx with Qlogic NICs. However, the performance impact > is not acceptable (around 50% drop). > > A better compromise is to use -O1 for the qede PMD: > - there is some perf impact, > - but the PMD is working as expected (packets are correctly received). > > When compiling with both -O2 and -O3 and gcc-13, there is no packet > reception when using the qede PMD. The root cause could be missing > 'volatile' keywords or missing memory barriers in the qede PMD code. > > Link: https://bugs.dpdk.org/show_bug.cgi?id=1379 > Signed-off-by: Thierry Herbelot <thierry.herbe...@6wind.com> Since GCC 14 and 15 are available do they fix the problem? If so, the the hack should be limited to Gcc 13 and with more complete comment.
