powerpc/pseries: Update the device tree correctly for drconf memory add/remove

This updates the device tree manipulation routines so that memory
add/remove of lmbs represented under the
ibm,dynamic-reconfiguration-memory node of the device tree invokes the
hotplug notifier chain.

This change is needed because of the change in the way memory is
represented under the ibm,dynamic-reconfiguration-memory node.  All lmbs
are described in the ibm,dynamic-memory property instead of having a
separate node for each lmb as in previous device tree layouts.  This
requires the update_node() routine to check for updates to the
ibm,dynamic-memory property and invoke the hotplug notifier chain.

This also updates the pseries hotplug notifier to be able to gather information
for lmbs represented under the ibm,dynamic-reconfiguration-memory node and
have the lmbs added/removed.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/include/asm-powerpc/pSeries_reconfig.h b/include/asm-powerpc/pSeries_reconfig.h
index ea6cfb8efb84..e482e5352e69 100644
--- a/include/asm-powerpc/pSeries_reconfig.h
+++ b/include/asm-powerpc/pSeries_reconfig.h
@@ -9,8 +9,10 @@
  * added or removed on pSeries systems.
  */
 
-#define PSERIES_RECONFIG_ADD    0x0001
-#define PSERIES_RECONFIG_REMOVE 0x0002
+#define PSERIES_RECONFIG_ADD            0x0001
+#define PSERIES_RECONFIG_REMOVE         0x0002
+#define PSERIES_DRCONF_MEM_ADD          0x0003
+#define PSERIES_DRCONF_MEM_REMOVE       0x0004
 
 #ifdef CONFIG_PPC_PSERIES
 extern int pSeries_reconfig_notifier_register(struct notifier_block *);