no-snoop flag in memory registration?
From: Klaus Wacker <hidden>
Date: 2012-10-23 14:32:57
Hi all, 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. 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: kdwacker-tA70FqPdS9Zhl2p70BpVqQ@public.gmane.orgm 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 majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html