On 16:11 Mon 03 Dec 2007, Daniel Drake wrote: > Here's a document I wrote after figuring out what unaligned memory access > is all about. I've tried to cover the information I was looking for when > trying to learn about this, without producing a hopelessly detailed/complex > spew. I hope it is useful to others. > > Signed-off-by: Daniel Drake <[EMAIL PROTECTED]> > > --- <snip> > +These macros work work for memory accesses of any length (not just 32 bits as
Remove a "work" here. > +in the examples above). Be aware that when compared to standard access of > +aligned memory, using these macros to access unaligned memory can be costly > in > +terms of performance. > + > +If use of such macros is not convenient, another option is to use memcpy(), > +where the source or destination (or both) are of type u8* or unsigned char*. > +Due to the byte-wise nature of this operation, unaligned accesses are > avoided. Cheers, Brandon -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/