Hi- When I boot v4.11-rc1 or -rc2 on my systems, the CX-3 Pro cards are no longer plumbed. Booting with v4.10 works as expected. The below system log messages are typical of the failure. [ 2.449385] mlx4_core 0000:03:00.0: FW version 2.40.5000 (cmd intf rev 3), max commands 16 [ 2.449389] mlx4_core 0000:03:00.0: Catastrophic error buffer at 0x1f020, size 0x10, BAR 0 [ 2.449392] mlx4_core 0000:03:00.0: Communication vector bar:2 offset:0x800 [ 2.449393] mlx4_core 0000:03:00.0: FW size 385 KB [ 2.449396] mlx4_core 0000:03:00.0: Internal clock bar:0 offset:0x78f50 [ 2.449397] mlx4_core 0000:03:00.0: Clear int @ f0058, BAR 0 [ 2.451629] mlx4_core 0000:03:00.0: Mapped 26 chunks/6168 KB for FW .... [ 7.838089] mlx4_core 0000:03:00.0: mlx4_allocate_default_counters: default counter index 0 for port 1 [ 7.849428] mlx4_en: Mellanox ConnectX HCA Ethernet driver v2.2-1 (Feb 2014) [ 7.874963] <mlx4_ib> mlx4_ib_add: mlx4_ib: Mellanox ConnectX InfiniBand driver v2.2-1 (Feb 2014) [ 7.875916] <mlx4_ib> mlx4_ib_add: counter index 0 for port 1 allocated 0 [ 7.924595] mlx4_core 0000:03:00.0: Mapped 1 chunks/256 KB at 100040000 for ICM [ 7.926363] DMAR: Allocating domain for mlx4_0 failed [ 7.927698] infiniband mlx4_0: Couldn't post receive WRs [ 7.929011] infiniband mlx4_0: Couldn't start port [ 7.951265] infiniband mlx4_0: Couldn't open port 1 [ 7.953435] infiniband mlx4_0: ib_register_mad_agent: Invalid port 1 [ 7.955576] infiniband mlx4_0: ib_register_mad_agent: Invalid port 1 [ 7.957701] infiniband mlx4_0: Port 1 not found [ 7.959813] infiniband mlx4_0: Couldn't close port 1 for agents [ 7.961944] infiniband mlx4_0: Port 1 not found [ 7.963899] infiniband mlx4_0: Couldn't close port 1 -- Chuck Lever -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html