This is a note to let you know that I've just added the patch titled net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-mlx4_core-fix-vf-overwrite-of-module-param-which-disables-dmfs-on-new-probed-pfs.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Thu Oct 19 15:04:02 CEST 2017 From: Majd Dibbiny <majd@xxxxxxxxxxxx> Date: Thu, 23 Feb 2017 12:02:43 +0200 Subject: net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs From: Majd Dibbiny <majd@xxxxxxxxxxxx> [ Upstream commit 95f1ba9a24af9769f6e20dfe9a77c863f253f311 ] In the VF driver, module parameter mlx4_log_num_mgm_entry_size was mistakenly overwritten -- and in a manner which overrode the device-managed flow steering option encoded in the parameter. log_num_mgm_entry_size is a global module parameter which affects all ConnectX-3 PFs installed on that host. If a VF changes log_num_mgm_entry_size, this will affect all PFs which are probed subsequent to the change (by disabling DMFS for those PFs). Fixes: 3c439b5586e9 ("mlx4_core: Allow choosing flow steering mode") Signed-off-by: Majd Dibbiny <majd@xxxxxxxxxxxx> Reviewed-by: Jack Morgenstein <jackm@xxxxxxxxxxxxxxxxxx> Signed-off-by: Tariq Toukan <tariqt@xxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ethernet/mellanox/mlx4/main.c | 2 -- 1 file changed, 2 deletions(-) --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -841,8 +841,6 @@ static int mlx4_slave_cap(struct mlx4_de return -ENOSYS; } - mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz; - dev->caps.hca_core_clock = hca_param.hca_core_clock; memset(&dev_cap, 0, sizeof(dev_cap)); Patches currently in stable-queue which might be from majd@xxxxxxxxxxxx are queue-4.9/net-mlx4_core-fix-vf-overwrite-of-module-param-which-disables-dmfs-on-new-probed-pfs.patch