On Tue, Aug 08, 2006 at 10:17:53AM +0200, Martin Schwidefsky wrote: > "vmalloc reserve first; allocate pages later" would be a really nice > feature. We could use this on s390 to implement the virtual mem_map > array spanning the whole 64 bit address range (with holes in it). To > make it perfect a "deallocate pages; keep vmalloc reserve" should be > added, then we could free parts of the mem_map array again on hot memory > remove.
IA-64 already has some arch. specific code to allocate a sparse virtual memory map ... having generic code to do so would be nice, but I foresee some chicken&egg problems in getting enough of the vmalloc/vmap framework up & running before mem_map[] has been allocated. That and the hotplug memory folks don't like the virtual mem_map code and have spurned it in favour of SPARSE. -Tony - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
