[ofa-general] [PATCH] IB/mlx4: Use pgprot_writecombine() for BlueFlame pages

[Roland Dreier]

 > Can you elaborate a little on the expected latency benefit? If we see
 > today 1us half rtt for small messages, with this patch it should go
 > below? be the same for larger messages? anything else?

This should bring mainline kernel small message latency to the same
level that OFED gets with the PAT support it hacks in.

 - R.