Hi, While trying SR-IOV with a Linux guest running on Hyper-V, I found this issue: the VF driver can't work if the guest has 16 virtual CPUs (less vCPUs, e.g. 8, can work fine):
[ 9.927820] mlx4_core: Mellanox ConnectX core driver v2.2-1 (Feb, 2014) [ 9.927882] mlx4_core: Initializing b961:00:02.0 [ 9.970994] mlx4_core b961:00:02.0: Detected virtual function - running in slave mode [ 9.976783] mlx4_core b961:00:02.0: Sending reset [ 9.985858] mlx4_core b961:00:02.0: Sending vhcr0 [ 10.004855] mlx4_core b961:00:02.0: HCA minimum page size:512 [ 10.010465] mlx4_core b961:00:02.0: Timestamping is not supported in slave mode [ 10.203065] mlx4_core b961:00:02.0: Failed to initialize event queue table, aborting [ 10.226728] mlx4_core: probe of b961:00:02.0 failed with error -12 I'm using the mainline kernel (4.10.0-rc4). Any idea? Thanks, -- Dexuan
