[Bug c/53037] warn_if_not_aligned(X)

[hpa at zytor dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53037

--- Comment #7 from H. Peter Anvin <hpa at zytor dot com> 2012-04-19 16:57:14 UTC ---
The __u64/__s64 types are used for interfaces only.  The kernel itself is
x86-64 and uses aligned types for internal uses.

The mismatch between i386 and x86-64 alignment has a tendency to cause
unexpected bugs, and Linus would like to avoid those by having new interfaces
use aligned types consistently.