netdev - Re: InfiniBand/RDMA merge plans for 2.6.24

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Date:	Wed, 19 Sep 2007 08:19:08 +0200
From:	"Michael S. Tsirkin" <mst@....mellanox.co.il>
To:	Jack Morgenstein <jackm@....mellanox.co.il>
Cc:	general@...ts.openfabrics.org, netdev@...r.kernel.org,
	Roland Dreier <rdreier@...co.com>
Subject: Re: InfiniBand/RDMA merge plans for 2.6.24

> Missing from this list (IMPORTANT patch!):
> [ofa-general] [PATCH 2 of 2] IB/mlx4: Handle new FW requirement for send request prefetching, for WQE sg lists
> (Posted by me to list on Sept 4)
> {patch header: 
> This is an addendum to Roland's commit 0e6e74162164d908edf7889ac66dca09e7505745
> (June 18). This addendum adds prefetch headroom marking processing for s/g segments.
> 
> We write s/g segments in reverse order into the WQE, in order to guarantee
> that the first dword of all cachelines containing s/g segments is written last
> (overwriting the headroom invalidation pattern). The entire cacheline will thus
> contain valid data when the invalidation pattern is overwritten.

This actually looks like a bugfix that might even have been appropriate
for 2.6.23. Roland, do you have this patch? Can you comment on it please?

-- 
MST
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