On Tue, 2010-07-27 at 23:01 -0700, David Miller wrote: > > On x86, physical address 0 contains the real-mode IVT and will thus be > > reserved, at least for the forseeable future. Other architectures may > > very well have non-special RAM there. > > 0 is very much possible on sparc64 Yup, we need to fix that. For now I made MEMBLOCK_ERROR 0 and added a blurb to prevent allocating the first page since it would cause other problems with the current code (0 is after all the normal error result from membloc_alloc(), ie, our API wasn't quite consistent there). So I don't think I'm introducing a regression here, on the contrary. But if we are going to allow lmb_alloc() to return 0, we need to fix all callers first and then we can look into turning MEMBLOCK_ERROR back to ~0 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
