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BZ 108848: Enable SPARSE memory config on ia64



I think we have a better feeling for the behaviour of SPARSE under ia64. From the lmbench results it looks like we're seeing an overall performance improvement...
Dave, please apply the attached patch.

P.
--- linux-2.6.17.ia64/configs/kernel-2.6.17-ia64.config.orig	2006-07-25 12:41:59.000000000 -0400
+++ linux-2.6.17.ia64/configs/kernel-2.6.17-ia64.config	2006-07-25 15:18:10.000000000 -0400
@@ -136,12 +135,14 @@ CONFIG_SCHED_SMT=y
 # CONFIG_PREEMPT is not set
 CONFIG_SELECT_MEMORY_MODEL=y
 # CONFIG_FLATMEM_MANUAL is not set
-CONFIG_DISCONTIGMEM_MANUAL=y
-# CONFIG_SPARSEMEM_MANUAL is not set
-CONFIG_DISCONTIGMEM=y
-CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+CONFIG_SPARSEMEM_MANUAL=y
+CONFIG_SPARSEMEM=y
 CONFIG_NEED_MULTIPLE_NODES=y
+CONFIG_HAVE_MEMORY_PRESENT=y
 # CONFIG_SPARSEMEM_STATIC is not set
+CONFIG_SPARSEMEM_EXTREME=y
+# CONFIG_MEMORY_HOTPLUG is not set
 CONFIG_SPLIT_PTLOCK_CPUS=4
 CONFIG_MIGRATION=y
 CONFIG_RESOURCES_64BIT=y
@@ -152,8 +153,6 @@ CONFIG_ARCH_SPARSEMEM_ENABLE=y
 CONFIG_ARCH_DISCONTIGMEM_DEFAULT=y
 CONFIG_NUMA=y
 CONFIG_NODES_SHIFT=8
-CONFIG_VIRTUAL_MEM_MAP=y
-CONFIG_HOLES_IN_ZONE=y
 CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID=y
 CONFIG_HAVE_ARCH_NODEDATA_EXTENSION=y
 # CONFIG_IA32_SUPPORT is not set

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