On Mon, 2010-05-17 at 11:03 -0700, H. Peter Anvin wrote: > On 05/14/2010 01:09 AM, Benjamin Herrenschmidt wrote: > > > > No. That is not the point. Read the rest of my email ! > > > > We need to -sanitize- those errors. _Maybe_ exposing LMB_ERROR is the > > right way to do so, but in that case, we need to make -all- function use > > the same error code. Right now, some fail with 0 and some with > > LMB_ERROR. > > > > Using errnos like the rest of the kernel seems like the right thing to > do, IMO. Maybe. The allocator/find functions return a physical address. If we all agree that a physical address between -PAGE_SIZE and 0 is never valid, then we can overlay the negative errno codes like we do for pointers. I'll have a look at that, it shouldn't be very hard. Cheers, Ben. -- 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
