On Mon, 2009-06-29 at 16:57 +0100, David Howells wrote:

kernel mailz [off-list ref] wrote:

quoted

asm("sync");

Isn't gcc free to discard this as it has no dependencies, no indicated side
effects, and isn't required to be kept?  I think this should probably be:

	asm volatile("sync");

It should also have a "memory" clobber or it's pointless since gcc would
otherwise be free to move load and stores accross that barrier.

Cheers,
Ben.