On Mon, 2020-01-06 at 13:34 -0800, David Miller wrote: > From: Arnd Bergmann <arnd@xxxxxxxx> > Date: Sat, 4 Jan 2020 22:51:44 +0100 > > > In some configurations, gcc tries too hard to optimize this code: > > > > drivers/net/ethernet/mellanox/mlx5/core/en_stats.c: In function > 'mlx5e_grp_sw_update_stats': > > drivers/net/ethernet/mellanox/mlx5/core/en_stats.c:302:1: error: > the frame size of 1336 bytes is larger than 1024 bytes [- > Werror=frame-larger-than=] > > > > As was stated in the bug report, the reason is that gcc runs into a > corner > > case in the register allocator that is rather hard to fix in a good > way. > > > > As there is an easy way to work around it, just add a comment and > the > > barrier that stops gcc from trying to overoptimize the function. > > > > Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92657 > > Cc: Adhemerval Zanella <adhemerval.zanella@xxxxxxxxxx> > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> > > Saeed, please take this. > > Thank you. > Applied to net-next-mlx5 will submit to net-next later today. Thanks !
