> If you have a memory mapped byte, you really want a way of saying
> "when I read this byte, do a byte read, it will not work to do a
> word read"
> (volatile gets close in C, but is not close enough) will ensure a
> byte store in practice, but may not ensure byte reads.
? Do you have an example where this fails? Do you not consider it a
bug? Now, I would place a fair amount of buren on the compiler to get
it right, though, this isn't absolute. For example, eieieio or
whatever it is called on the powerpc. I think the chip/OS/MMU must
bear some responsibility for meeting its obligations to the compiler,
and if it doesn't, then that chip/OS/MMU fails to provide a reasonable
base on which to provide the compiler. Did you have this case in
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to email@example.com
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/