From ef229c5a5e7701ab08a6a06258f415b150348bcc Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Tue, 16 Oct 2007 01:24:15 -0700 Subject: IA64: SPARSEMEM_VMEMMAP 16K page size support Equip IA64 sparsemem with a virtual memmap. This is similar to the existing CONFIG_VIRTUAL_MEM_MAP functionality for DISCONTIGMEM. It uses a PAGE_SIZE mapping. This is provided as a minimally intrusive solution. We split the 128TB VMALLOC area into two 64TB areas and use one for the virtual memmap. This should replace CONFIG_VIRTUAL_MEM_MAP long term. [apw@shadowen.org: convert to new helper based initialisation] Signed-off-by: Christoph Lameter Signed-off-by: Andy Whitcroft Acked-by: Mel Gorman Cc: "Luck, Tony" Cc: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ia64/Kconfig | 1 + arch/ia64/mm/discontig.c | 8 ++++++++ 2 files changed, 9 insertions(+) (limited to 'arch/ia64') diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 2e6310b8eab7..802b082e216d 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -348,6 +348,7 @@ config ARCH_FLATMEM_ENABLE config ARCH_SPARSEMEM_ENABLE def_bool y depends on ARCH_DISCONTIGMEM_ENABLE + select SPARSEMEM_VMEMMAP_ENABLE config ARCH_DISCONTIGMEM_DEFAULT def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c index 0d34585058c8..5628067a74d2 100644 --- a/arch/ia64/mm/discontig.c +++ b/arch/ia64/mm/discontig.c @@ -715,3 +715,11 @@ void arch_refresh_nodedata(int update_node, pg_data_t *update_pgdat) scatter_node_data(); } #endif + +#ifdef CONFIG_SPARSEMEM_VMEMMAP +int __meminit vmemmap_populate(struct page *start_page, + unsigned long size, int node) +{ + return vmemmap_populate_basepages(start_page, size, node); +} +#endif -- cgit v1.2.3-59-g8ed1b