On Tue, Nov 21, 2017 at 11:57:44AM -0700, Jason Gunthorpe wrote: > On Tue, Nov 21, 2017 at 01:16:43PM -0500, Don Dutile wrote: > > > >>I don't really think it is really too user visible.. Only the device > > >>and port number change, but only if running in mixed mode. > > > > > >Ahh, correct me if I'm wrong, you are proposing to split mlx4_ib devices > > >to two devices once it is configured in mixed mode, so everyone will > > >have one port only. Did I understand you correctly? > > > Which would require splitting resources that are shared now? other > > splitting issue(s)? > > A change like this would be almost transparent to most users. The cx3 > card in mixed mode will look like a mlx5 card does: two single port > RDMA devices. > > I think only a minimal amount of stuff is actually shared between > ports, and as cx5 already demonstrates there isn't really a notable > downside to having two kernel RDMA devices. CX4+ cards have completely different HW architecture in opposite to CX3, and mlx5 implementation doesn't mean that your suggestion is doable for mlx4. It worth to check it. Thanks > > Jason
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