On Mon, Jun 17, 2013 at 2:13 PM, Yinghai Lu <ying...@kernel.org> wrote: >> No bigge, but why (1ULL << 32) - 1? Shouldn't it be just 1ULL << 32? >> memblock deals with [@start, @end) areas, right? > > that is for 32bit, when phys_addr_t is 32bit, in that case > (1ULL<<32) cast to 32bit would be 0.
Right, it'd work the same even after overflowing but yeah, it can be confusing. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
