diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/tlb_uv.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c index abf3c31f14cf..59efb5390b37 100644 --- a/arch/x86/kernel/tlb_uv.c +++ b/arch/x86/kernel/tlb_uv.c @@ -1635,12 +1635,16 @@ static int __init uv_bau_init(void) alloc_intr_gate(vector, uv_bau_message_intr1); for_each_possible_blade(uvhub) { - pnode = uv_blade_to_pnode(uvhub); - /* INIT the bau */ - uv_write_global_mmr64(pnode, UVH_LB_BAU_SB_ACTIVATION_CONTROL, - ((unsigned long)1 << 63)); - mmr = 1; /* should be 1 to broadcast to both sockets */ - uv_write_global_mmr64(pnode, UVH_BAU_DATA_BROADCAST, mmr); + if (uv_blade_nr_possible_cpus(uvhub)) { + pnode = uv_blade_to_pnode(uvhub); + /* INIT the bau */ + uv_write_global_mmr64(pnode, + UVH_LB_BAU_SB_ACTIVATION_CONTROL, + ((unsigned long)1 << 63)); + mmr = 1; /* should be 1 to broadcast to both sockets */ + uv_write_global_mmr64(pnode, UVH_BAU_DATA_BROADCAST, + mmr); + } } return 0; |