diff -Naur linux-2.6.28/mm/Kconfig linux-2.6.28-tmem/mm/Kconfig
--- linux-2.6.28/mm/Kconfig	2008-12-24 16:26:37.000000000 -0700
+++ linux-2.6.28-tmem/mm/Kconfig	2009-01-05 16:57:43.000000000 -0700
@@ -222,3 +222,34 @@
 
 config MMU_NOTIFIER
 	bool
+
+#
+# support for transcendent memory
+#
+config TMEM
+	bool "Transcendent memory support"
+	def_bool y
+	depends on XEN
+	help
+	  In a virtualized environment, allows unused and underutilized
+	  system physical memory to be made accessible through a narrow
+	  well-defined page-copy-based API.  If unsure, say Y.
+
+config PRECACHE
+	bool "Cache clean pages in transcendent memory"
+	def_bool y
+	depends on TMEM
+	help
+	  Allows the transcendent memory pool to be used to store clean
+	  page-cache pages which, under some circumstances, will greatly
+	  reduce paging and thus improve performance.  If unsure, say Y.
+
+config PRESWAP
+	bool "Swap pages to transcendent memory"
+	def_bool y
+	depends on TMEM
+	help
+	  Allows the transcendent memory pool to be used as a pseudo-swap
+	  device which, under some circumstances, will greatly reduce
+	  swapping and thus improve performance.  If unsure, say Y.
+
diff -Naur linux-2.6.28/mm/Makefile linux-2.6.28-tmem/mm/Makefile
--- linux-2.6.28/mm/Makefile	2008-12-24 16:26:37.000000000 -0700
+++ linux-2.6.28-tmem/mm/Makefile	2009-01-05 16:57:43.000000000 -0700
@@ -16,6 +16,9 @@
 obj-$(CONFIG_PROC_PAGE_MONITOR) += pagewalk.o
 obj-$(CONFIG_BOUNCE)	+= bounce.o
 obj-$(CONFIG_SWAP)	+= page_io.o swap_state.o swapfile.o thrash.o
+obj-$(CONFIG_TMEM)	+= tmem.o
+obj-$(CONFIG_PRESWAP)	+= preswap.o
+obj-$(CONFIG_PRECACHE)	+= precache.o
 obj-$(CONFIG_HAS_DMA)	+= dmapool.o
 obj-$(CONFIG_HUGETLBFS)	+= hugetlb.o
 obj-$(CONFIG_NUMA) 	+= mempolicy.o