Re: [dpdk-dev] [PATCH v2 0/3] net: fix out of order Rx read issue

["Ananyev, Konstantin" <konstantin.ananyev@intel.com>]

> 
> 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@intel.com>

> 2.7.4