From: Jack Steiner Date: Fri, 10 Sep 2010 15:08:08 +0000 (-0500) Subject: x86, UV: Fix initialization of max_pnode X-Git-Tag: firefly_0821_release~10186^2~647 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=db6e20425552dfa1dccddc691e1889c0ae1902ca;p=firefly-linux-kernel-4.4.55.git x86, UV: Fix initialization of max_pnode commit 36ac4b987bea9a95217e1af552252f275ca7fc44 upstream. Fix calculation of "max_pnode" for systems where the the highest blade has neither cpus or memory. (And, yes, although rare this does occur). Signed-off-by: Jack Steiner LKML-Reference: <20100910150808.GA19802@sgi.com> Signed-off-by: Ingo Molnar Cc: maximilian attems Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 4a0d346cf84a..c7ee9c9e0245 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -595,9 +595,11 @@ void __init uv_system_init(void) for (j = 0; j < 64; j++) { if (!test_bit(j, &present)) continue; - uv_blade_info[blade].pnode = (i * 64 + j); + pnode = (i * 64 + j); + uv_blade_info[blade].pnode = pnode; uv_blade_info[blade].nr_possible_cpus = 0; uv_blade_info[blade].nr_online_cpus = 0; + max_pnode = max(pnode, max_pnode); blade++; } } @@ -635,7 +637,6 @@ void __init uv_system_init(void) uv_cpu_hub_info(cpu)->scir.offset = uv_scir_offset(apicid); uv_node_to_blade[nid] = blade; uv_cpu_to_blade[cpu] = blade; - max_pnode = max(pnode, max_pnode); } /* Add blade/pnode info for nodes without cpus */ @@ -647,7 +648,6 @@ void __init uv_system_init(void) pnode = (paddr >> m_val) & pnode_mask; blade = boot_pnode_to_blade(pnode); uv_node_to_blade[nid] = blade; - max_pnode = max(pnode, max_pnode); } map_gru_high(max_pnode);