Hi, booting 32bit guest on 32bit host on AMD system gives me the following warning when KVM is instructed to boot as SMP: CPU0: AMD QEMU Virtual CPU version 0.9.1 stepping 03 Booting Node 0, Processors #1 Initializing CPU#1 Leaving ESR disabled. Mapping cpu 1 to node 0 ------------[ cut here ]------------ WARNING: at linux-2.6.32/arch/x86/kernel/cpu/amd.c:187 init_amd_k7+0x178/0x187() Hardware name: WARNING: This combination of AMD processors is not suitable for SMP. Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.32.9-0.5-pae #1 Call Trace: [<c02069a1>] try_stack_unwind+0x1b1/0x1f0 [<c020596f>] dump_trace+0x3f/0xe0 [<c02065ab>] show_trace_log_lvl+0x4b/0x60 [<c02065d8>] show_trace+0x18/0x20 [<c052dc19>] dump_stack+0x6d/0x74 [<c023ebbf>] warn_slowpath_common+0x6f/0xd0 [<c023ec6b>] warn_slowpath_fmt+0x2b/0x30 [<c052875c>] init_amd_k7+0x178/0x187 [<c052896f>] init_amd+0x138/0x279 [<c0527d74>] identify_cpu+0xc2/0x223 [<c0527ee1>] identify_secondary_cpu+0xc/0x1a [<c052b3bc>] smp_callin+0xd4/0x1a1 [<c052b493>] start_secondary+0xa/0xe7 The virtual CPU identifies itself as cpu family 6, model 2, stepping 3 in /proc/cpuinfo. Model 2 is indeed not handled by amd_k7_smp_check() and thus this warning is spit out. Is that correct? Model 2 refers to Pluto/Orion (K75) if I remember correctly, right? That one is not oficially certified for SMP by AMD? If it is not, maybe KVM should better emulate different CPU for SMP-enabled configurations, right? On the other hand, if it is certified (I have no idea), amd_k7_smp_check() should handle this model properly. Thanks, -- Jiri Kosina SUSE Labs, Novell Inc. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
