HI,

Intermittently, do_boot_cpu fails at boot time for secondary cpus:

^MLoading kernel bzImage-re-64b.bin...
^MNo device tree for this boot.
^MLoading initial ramdisk initrd_Yocto_1.6_x86_64.fs...
^Merror: no suitable video mode found.
^MBooting in blind mode
^M[ 14.211698] smpboot: do_boot_cpu failed(-1) to wakeup CPU#1
[ 24.319605] smpboot: do_boot_cpu failed(-1) to wakeup CPU#2
[ 34.427453] smpboot: do_boot_cpu failed(-1) to wakeup CPU#3
[ 44.535249] smpboot: do_boot_cpu failed(-1) to wakeup CPU#4
[ 54.642933] smpboot: do_boot_cpu failed(-1) to wakeup CPU#5
[ 64.750580] smpboot: do_boot_cpu failed(-1) to wakeup CPU#6
[ 74.858285] smpboot: do_boot_cpu failed(-1) to wakeup CPU#7
[ 84.984480] smpboot: do_boot_cpu failed(-1) to wakeup CPU#9
[ 95.093166] smpboot: do_boot_cpu failed(-1) to wakeup CPU#10
[ 105.202942] smpboot: do_boot_cpu failed(-1) to wakeup CPU#11
[ 115.312689] smpboot: do_boot_cpu failed(-1) to wakeup CPU#12
[ 125.422479] smpboot: do_boot_cpu failed(-1) to wakeup CPU#13
[ 135.532213] smpboot: do_boot_cpu failed(-1) to wakeup CPU#14

CPU is (Xeon E5-2600 v3) 6-core @ 2 GHz and kernel is 4.1.y stable.

cpuinfo:

vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Genuine Intel(R) CPU @ 1.80GHz
stepping : 1
microcode : 0x14
cpu MHz : 1800.086
cache size : 20480 KB
physical id : 0
siblings : 16
core id : 0
cpu cores : 8
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 15
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm xsaveopt cqm_llc cqm_occup_llc
bugs :
bogomips : 3600.17
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

MemTotal: 32435864 kB