On Fri, 16 Mar 2007, Andi Kleen wrote: > > > x86_64 is going to acquire more functionality that will not be available > > for i386. We plan f.e. to add virtual memmap support for x86_64. Virtual > > What advantage would that have over the current setup? > We already should handle holes between nodes reasonably efficiently > and with nonlinear memory even holes inside nodes shouldn't be a problem.
It is primarily a performance improvement since the sparsemem table lookups would no longer be necessary and it also streamlines other frequent cacheline uses. These page -> page_struct and vice versa operations are key to the performance of various subsystem among them the slab allocator. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/