> > In vPMD, when load Rx desc with _mm_loadu_si128, > volatile point will be cast into non-volatile point. > So GCC is allowed to reorder the load instructions, > while Rx read's correctness is reply on these load > instructions to follow a backward sequence strictly, > so we add compile barrier to prevent compiler reorder. > We already met this issue on i40e with GCC6 and we > fixed this on ixgbe and fm10k also. > > v2: > - fix check-git-log.sh warning. > - add more detail commit message. > > Qi Zhang (3): > net/i40e: fix out of order Rx read issue > net/ixgbe: fix out of order Rx read issue > net/fm10k: fix out of ofder Rx read issue > > drivers/net/fm10k/fm10k_rxtx_vec.c | 3 +++ > drivers/net/i40e/i40e_rxtx_vec.c | 3 +++ > drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c | 3 +++ > 3 files changed, 9 insertions(+) > > --
Acked-by: Konstantin Ananyev <konstantin.ananyev at intel.com> > 2.7.4
