2 files changed, 13 insertions, 8 deletions

diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h
index d3a98ea1062e..341070f7ad5c 100644
--- a/arch/x86/include/asm/uv/uv_hub.h
+++ b/arch/x86/include/asm/uv/uv_hub.h
@@ -133,6 +133,7 @@ struct uv_scir_s {
 struct uv_hub_info_s {
         unsigned long           global_mmr_base;
         unsigned long           gpa_mask;
+        unsigned int            gnode_extra;
         unsigned long           gnode_upper;
         unsigned long           lowmem_remap_top;
         unsigned long           lowmem_remap_base;
@@ -159,7 +160,8 @@ DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
  *              p -  PNODE (local part of nsids, right shifted 1)
  */
 #define UV_NASID_TO_PNODE(n)            (((n) >> 1) & uv_hub_info->pnode_mask)
-#define UV_PNODE_TO_NASID(p)            (((p) << 1) | uv_hub_info->gnode_upper)
+#define UV_PNODE_TO_GNODE(p)            ((p) |uv_hub_info->gnode_extra)
+#define UV_PNODE_TO_NASID(p)            (UV_PNODE_TO_GNODE(p) << 1)
 
 #define UV_LOCAL_MMR_BASE               0xf4000000UL
 #define UV_GLOBAL_MMR32_BASE            0xf8000000UL
@@ -173,7 +175,7 @@ DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
 #define UV_GLOBAL_MMR32_PNODE_BITS(p)   ((p) << (UV_GLOBAL_MMR32_PNODE_SHIFT))
 
 #define UV_GLOBAL_MMR64_PNODE_BITS(p)                                   \
-        ((unsigned long)(p) << UV_GLOBAL_MMR64_PNODE_SHIFT)
+        ((unsigned long)(UV_PNODE_TO_GNODE(p)) << UV_GLOBAL_MMR64_PNODE_SHIFT)
 
 #define UV_APIC_PNODE_SHIFT     6
 
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 2bda69352976..39f2af4b5467 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -562,7 +562,7 @@ void __init uv_system_init(void)
         union uvh_node_id_u node_id;
         unsigned long gnode_upper, lowmem_redir_base, lowmem_redir_size;
         int bytes, nid, cpu, lcpu, pnode, blade, i, j, m_val, n_val;
-        int max_pnode = 0;
+        int gnode_extra, max_pnode = 0;
         unsigned long mmr_base, present, paddr;
         unsigned short pnode_mask;
 
@@ -574,6 +574,13 @@ void __init uv_system_init(void)
         mmr_base =
             uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
             ~UV_MMR_ENABLE;
+        pnode_mask = (1 << n_val) - 1;
+        node_id.v = uv_read_local_mmr(UVH_NODE_ID);
+        gnode_extra = (node_id.s.node_id & ~((1 << n_val) - 1)) >> 1;
+        gnode_upper = ((unsigned long)gnode_extra  << m_val);
+        printk(KERN_DEBUG "UV: N %d, M %d, gnode_upper 0x%lx, gnode_extra 0x%x\n",
+                        n_val, m_val, gnode_upper, gnode_extra);
+
         printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
 
         for(i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++)
@@ -607,11 +614,6 @@ void __init uv_system_init(void)
                 }
         }
 
-        pnode_mask = (1 << n_val) - 1;
-        node_id.v = uv_read_local_mmr(UVH_NODE_ID);
-        gnode_upper = (((unsigned long)node_id.s.node_id) &
-                       ~((1 << n_val) - 1)) << m_val;
-
         uv_bios_init();
         uv_bios_get_sn_info(0, &uv_type, &sn_partition_id,
                             &sn_coherency_id, &sn_region_size);
@@ -634,6 +636,7 @@ void __init uv_system_init(void)
                 uv_cpu_hub_info(cpu)->pnode_mask = pnode_mask;
                 uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
                 uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
+                uv_cpu_hub_info(cpu)->gnode_extra = gnode_extra;
                 uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
                 uv_cpu_hub_info(cpu)->coherency_domain_number = sn_coherency_id;
                 uv_cpu_hub_info(cpu)->scir.offset = SCIR_LOCAL_MMR_BASE + lcpu;