> -----Original Message----- > From: Van Haaren, Harry <harry.van.haa...@intel.com> > Sent: Thursday, July 29, 2021 5:55 PM > To: ovs-dev@openvswitch.org > Cc: Stokes, Ian <ian.sto...@intel.com>; Van Haaren, Harry > <harry.van.haa...@intel.com> > Subject: [PATCH] dpcls: fix build on compilers without AVX512-VPOPCNT > > This commit adds extra checks around the AVX-512 vpopcnt instruction > enabling, ensuring that in the function where the ISA is enabled the > compiler has also indicated its support for the ISA. This is achieved > by checking the __AVX512VPOPCNTDQ__ define, which the compiler sets if > it is capable of handling the vpopcnt instruction. > > If the compiler is not capable of handling vpopcnt, we fall back to > the emulated vpopcnt implementation. > > Reported-by: Ian Stokes <ian.sto...@intel.com> > Signed-off-by: Harry van Haaren <harry.van.haa...@intel.com> > > --- > > Based on a very old system with GCC 7, an issue was identified > where the compiler doesn't support the vpopcnt ISA, and resulted > in compilation failures.
Ping on this patch, would be good to get integrated on 2.16 and master to ensure Gcc7 builds correctly. _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
