On 23/10/2012 16:32, Klaus Wacker wrote:
we are implementing a Linux/RDMA solution based on Mellanox/RoCE. Our memory registration is done via "ib_get_dma_mr()". During a problem follow-up someone asked us about the "no-snoop" flag and how it is set during memory registration in Linux.
Can you describe the problem you are trying to solve and what is the semantics you are looking for with "no snoop" -- which snooping and by what entity.
Or.
I digged into drivers/net/ethernet/mellanox/mlx4/mr.c, to find some MLX4_MPT_FLAGS_ visible there. Nothing seems to be related to a "no-snoop" flag. Can anybody shed some light on this, whether we can set the so called "no-snoop" flag, or is that beyond the scope of Linux support. Kind regards Klaus Wacker IBM Systems &Technology Group, Systems Software Development SW Linux on System z Dev & Service Phone: +49-7031-16-3779 IBM Deutschland E-Mail: [email protected] Schoenaicher Str. 220 71032 Boeblingen Germany IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
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