3 files changed, 9 insertions, 1 deletions

diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index a594aca959e6..14908ad7db8c 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -56,7 +56,7 @@
 
 DEFINE_PER_CPU(struct pda_s, pda_percpu);
 
-#define MAX_PHYS_MEMORY         (1UL << 49)     /* 1 TB */
+#define MAX_PHYS_MEMORY         (1UL << IA64_MAX_PHYS_BITS)     /* Max physical address supported */
 
 lboard_t *root_lboard[MAX_COMPACT_NODES];
 
diff --git a/arch/ia64/sn/kernel/xpc_main.c b/arch/ia64/sn/kernel/xpc_main.c
index bb1d5cf30440..ed7c21586e98 100644
--- a/arch/ia64/sn/kernel/xpc_main.c
+++ b/arch/ia64/sn/kernel/xpc_main.c
@@ -885,6 +885,10 @@ xpc_init(void)
         pid_t pid;
 
 
+        if (!ia64_platform_is("sn2")) {
+                return -ENODEV;
+        }
+
         /*
          * xpc_remote_copy_buffer is used as a temporary buffer for bte_copy'ng
          * both a partition's reserved page and its XPC variables. Its size was
diff --git a/arch/ia64/sn/kernel/xpnet.c b/arch/ia64/sn/kernel/xpnet.c
index 78c13d676fa6..d0c2c114a459 100644
--- a/arch/ia64/sn/kernel/xpnet.c
+++ b/arch/ia64/sn/kernel/xpnet.c
@@ -636,6 +636,10 @@ xpnet_init(void)
         int result = -ENOMEM;
 
 
+        if (!ia64_platform_is("sn2")) {
+                return -ENODEV;
+        }
+
         dev_info(xpnet, "registering network device %s\n", XPNET_DEVICE_NAME);
 
         /*