[ofa-general] Re: [PATCH] ib_umad unaligned access on ia64

[Roland Dreier]

 > > I thought we already dealt with this one in commit fa7252ed?
 > 
 > I didn't see anything which obviously addresses this in 
 > any tree I found at kernel.org or openfabrics.org, but 
 > maybe I didn't look in the right tree. 

this is the commit I'm talking about; I think it went into 2.6.21 but
I'm not sure.  Anyway it seems it should make sure that the tid
member is aligned to 8 bytes, or at least I think it should:

commit fa7252ed4d92397baf30e4a144af95a33eaa925b
Author: Jason Gunthorpe <jgunthorpe at obsidianresearch.com>
Date:   Fri Jan 19 11:58:49 2007 -0700

    IB: Make sure struct ib_user_mad.data is aligned
    
    Make the untyped data region in ib_user_mad have type u64 so that it
    gets aligned properly.  This avoids alignment faults in ib_umad when
    casting the data field to an rmpp_mad and accessing the 64-bit tid
    field on architectures like ia64.
    
    Signed-off-by: Jason Gunthorpe <jgunthorpe at obsidianresearch.com>
    Signed-off-by: Roland Dreier <rolandd at cisco.com>

diff --git a/include/rdma/ib_user_mad.h b/include/rdma/ib_user_mad.h
index 44537aa..d66b15e 100644
--- a/include/rdma/ib_user_mad.h
+++ b/include/rdma/ib_user_mad.h
@@ -98,7 +98,7 @@ struct ib_user_mad_hdr {
  */
 struct ib_user_mad {
 	struct ib_user_mad_hdr hdr;
-	__u8	data[0];
+	__u64	data[0];
 };
 
 /**