[ofa-general] Write combining support in OFED 1.5

[Or Gerlitz]

Jack Morgenstein wrote:
> Yes, see kernel_patches/fixes/mlx4_0010_add_wc.patch. With OFED 1.5, I am trying to use the kernel-based WC support, and eliminate the patch. To do this, I need 2 things:
> 1. macro pgprot_writecombine to be defined for PPC/PPC64 under the arch directory (file arch/powerpc/include/asm/pgtable.h)
> 2. A way of determining (via the standard kernel) if write-combining is available on a given platform (to allow disabling use of ConnectX blueflame in userspace if WC is not available).
>   
It seems that none of the issues are IB specific, correct? As for PPC 
guys I think we have another open issue with them, regarding huge pages 
support, a patch which isn't mainline. Maybe you can use the opportunity 
to set 
http://lists.openfabrics.org/pipermail/general/2009-January/056812.html 
as well...

Or.