On Tue, 27 May 2008, Alan Cox wrote: > > > re-ordering, even though I doubt it will be visible in practice. So if you > > use the "__" versions, you'd better have barriers even on x86! > > Are we also going to have __ioread*/__iowrite* ? I doubt there is any reason to. Let's just keep them very strictly ordered. > Also is the sematics of __readl/__writel defined for all architectures - > I used it ages ago in the i2o drivers for speed and it got removed > because it didn't build on some platforms. Agreed - I'm not sure the __ versions are really worth it. We have them, but the semantics are subtle enough that most drivers will never care enough to really use them. I would suggest using them mainly for architecture-specific drivers, on architectures where it actually matters (which is not the case on x86). Linus -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
