diff -r c8962b24fb50 tools/libxc/Makefile
--- a/tools/libxc/Makefile	Fri Jan 30 11:12:57 2009 +0900
+++ b/tools/libxc/Makefile	Thu Feb 05 13:58:34 2009 -0700
@@ -21,6 +21,7 @@ CTRL_SRCS-y       += xc_pm.c
 CTRL_SRCS-y       += xc_pm.c
 CTRL_SRCS-y       += xc_cpu_hotplug.c
 CTRL_SRCS-y       += xc_resume.c
+CTRL_SRCS-y       += xc_tmem.c
 CTRL_SRCS-$(CONFIG_X86) += xc_pagetab.c
 CTRL_SRCS-$(CONFIG_Linux) += xc_linux.c
 CTRL_SRCS-$(CONFIG_SunOS) += xc_solaris.c
diff -r c8962b24fb50 tools/libxc/xc_tmem.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_tmem.c	Thu Feb 05 13:58:34 2009 -0700
@@ -0,0 +1,82 @@
+/******************************************************************************
+ * xc_tmem.c
+ *
+ * Copyright (C) 2008 Oracle Corp.
+ */
+
+#include "xc_private.h"
+
+static int do_tmem_op(int xc, tmem_op_t *op)
+{
+    int ret;
+    DECLARE_HYPERCALL;
+
+    hypercall.op = __HYPERVISOR_tmem_op;
+    hypercall.arg[0] = (unsigned long)op;
+    if (lock_pages(op, sizeof(*op)) != 0)
+    {
+        PERROR("Could not lock memory for Xen hypercall");
+        return -EFAULT;
+    }
+    if ((ret = do_xen_hypercall(xc, &hypercall)) < 0)
+    {
+        if ( errno == EACCES )
+            DPRINTF("tmem operation failed -- need to"
+                    " rebuild the user-space tool set?\n");
+    }
+    unlock_pages(op, sizeof(*op));
+
+    return ret;
+}
+
+int xc_tmem_control(int xc,
+                    int32_t pool_id,
+                    uint32_t subop,
+                    uint32_t cli_id,
+                    uint32_t arg1,
+                    uint32_t arg2,
+                    void *buf)
+{
+    tmem_op_t op;
+    int rc;
+
+    op.cmd = TMEM_CONTROL;
+    op.pool_id = pool_id;
+    op.subop = subop;
+    op.cli_id = cli_id;
+    op.arg1 = arg1;
+    op.arg2 = arg2;
+    op.buf.p = buf;
+
+    if (subop == TMEMC_LIST) {
+        if ((arg1 != 0) && (lock_pages(buf, arg1) != 0))
+        {
+            PERROR("Could not lock memory for Xen hypercall");
+            return -ENOMEM;
+        }
+    }
+
+#ifdef VALGRIND
+    if (arg1 != 0)
+        memset(buf, 0, arg1);
+#endif
+
+    rc = do_tmem_op(xc, &op);
+
+    if (subop == TMEMC_LIST) {
+        if (arg1 != 0)
+            unlock_pages(buf, arg1);
+    }
+
+    return rc;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -r c8962b24fb50 tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h	Fri Jan 30 11:12:57 2009 +0900
+++ b/tools/libxc/xenctrl.h	Thu Feb 05 13:58:34 2009 -0700
@@ -1216,4 +1216,16 @@ int xc_set_cpufreq_gov(int xc_handle, in
 int xc_set_cpufreq_gov(int xc_handle, int cpuid, char *govname);
 int xc_set_cpufreq_para(int xc_handle, int cpuid,
                         int ctrl_type, int ctrl_value);
+
+/**
+ * tmem operations
+ */
+int xc_tmem_control(int xc,
+                    int32_t pool_id,
+                    uint32_t subop,
+                    uint32_t cli_id,
+                    uint32_t arg1,
+                    uint32_t arg2,
+                    void *buf);
+
 #endif /* XENCTRL_H */
diff -r c8962b24fb50 tools/python/xen/xend/XendConstants.py
--- a/tools/python/xen/xend/XendConstants.py	Fri Jan 30 11:12:57 2009 +0900
+++ b/tools/python/xen/xend/XendConstants.py	Thu Feb 05 13:58:35 2009 -0700
@@ -134,3 +134,27 @@ VTPM_DELETE_SCRIPT = '/etc/xen/scripts/v
 
 XS_VMROOT = "/vm/"
 
+#
+# tmem
+#
+
+TMEM_CONTROL       = 0
+TMEM_NEW_POOL      = 1
+TMEM_DESTROY_POOL  = 2
+TMEM_NEW_PAGE      = 3
+TMEM_PUT_PAGE      = 4
+TMEM_GET_PAGE      = 5
+TMEM_FLUSH_PAGE    = 6
+TMEM_FLUSH_OBJECT  = 7
+TMEM_READ          = 8
+TMEM_WRITE         = 9
+TMEM_XCHG          = 10
+
+TMEMC_THAW         = 0
+TMEMC_FREEZE       = 1
+TMEMC_DESTROY      = 2
+TMEMC_LIST         = 3
+TMEMC_SET_WEIGHT   = 4
+TMEMC_SET_CAP      = 5
+TMEMC_SET_COMPRESS = 6
+