Hi Ralf, I found a problem in cpu-probe.c . NEC VR4100 series do not have ll and sc. for v2.4 --- ./arch/mips/kernel/cpu-probe.c.orig Thu Apr 24 10:50:53 2003 +++ ./arch/mips/kernel/cpu-probe.c Thu Apr 24 12:33:06 2003 @@ -244,7 +244,7 @@ break; } current_cpu_data.isa_level = MIPS_CPU_ISA_III; - current_cpu_data.options = R4K_OPTS | MIPS_CPU_LLSC; + current_cpu_data.options = R4K_OPTS; current_cpu_data.tlbsize = 32; break; case PRID_IMP_R4300: for v2.5 --- ./arch/mips/kernel/cpu-probe.c.orig Thu Apr 24 10:52:04 2003 +++ ./arch/mips/kernel/cpu-probe.c Thu Apr 24 12:34:31 2003 @@ -244,7 +244,7 @@ break; } current_cpu_data.isa_level = MIPS_CPU_ISA_III; - current_cpu_data.options = R4K_OPTS | MIPS_CPU_LLSC; + current_cpu_data.options = R4K_OPTS; current_cpu_data.tlbsize = 32; break; case PRID_IMP_R4300: -- Yoichi