1 files changed, 4 insertions, 4 deletions

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 6d425490fb1f..130c4b934877 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -352,14 +352,14 @@ static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
 
         for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
                 alias.v = uv_read_local_mmr(redir_addrs[i].alias);
-                if (alias.s.base == 0) {
+                if (alias.s.enable && alias.s.base == 0) {
                         *size = (1UL << alias.s.m_alias);
                         redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
                         *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
                         return;
                 }
         }
-        BUG();
+        *base = *size = 0;
 }
 
 enum map_type {map_wb, map_uc};
@@ -627,12 +627,12 @@ void __init uv_system_init(void)
                 uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
                 uv_cpu_hub_info(cpu)->lowmem_remap_top = lowmem_redir_size;
                 uv_cpu_hub_info(cpu)->m_val = m_val;
-                uv_cpu_hub_info(cpu)->n_val = m_val;
+                uv_cpu_hub_info(cpu)->n_val = n_val;
                 uv_cpu_hub_info(cpu)->numa_blade_id = blade;
                 uv_cpu_hub_info(cpu)->blade_processor_id = lcpu;
                 uv_cpu_hub_info(cpu)->pnode = pnode;
                 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)->gpa_mask = (1UL << (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;