From: Roland Dreier <rdreier@cisco.com>
Date: Mon, 30 Mar 2009 15:31:05 +0000 (-0700)
Subject: IB/mlx4: Use pgprot_writecombine() for BlueFlame pages
X-Git-Tag: v2.6.30-rc2~92^2^4~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1d60ec6699f19b760df8261e922ae236ea7bb31;p=pandora-kernel.git

IB/mlx4: Use pgprot_writecombine() for BlueFlame pages

The PAT work on x86 has finally made pgprot_writecombine() a usable API
for modular drivers.  As the comment indicates, this is exactly what we
want to use in mlx4_ib to map BlueFlame pages up to userspace, since
using WC for these pages improves small message latency significantly.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
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