From: Luiz Capitulino <lcapitulino@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: [Qemu-devel] [BUG 1.0] -cpu host breaks linux guest boot
Date: Thu, 24 Nov 2011 16:03:55 -0200 [thread overview]
Message-ID: <20111124160355.7182f296@doriath> (raw)
Avi,
I'm getting the following panic very early on boot on a F16 VM (latest
qemu.git head 40897c9):
[ 0.068018] Kernel panic - not syncing: Boot APIC ID in local APIC unexpected (-1 vs 0)
[ 0.070006] Pid: 1, comm: swapper Not tainted 3.1.0-7.fc16.x86_64 #1
[ 0.071004] Call Trace:
[ 0.072035] [<ffffffff814acb8e>] panic+0x91/0x1a5
[ 0.073027] [<ffffffff81b831ca>] native_smp_prepare_cpus+0x24c/0x300
[ 0.075010] [<ffffffff81b76c0d>] kernel_init+0x85/0x158
[ 0.075993] [<ffffffff810527eb>] ? schedule_tail+0x27/0x6c
[ 0.076017] [<ffffffff814be5f4>] kernel_thread_helper+0x4/0x10
[ 0.077022] [<ffffffff81b76b88>] ? start_kernel+0x3b6/0x3b6
[ 0.078009] [<ffffffff814be5f0>] ? gs_change+0x13/0x13
After some debugging and I found out that this only happens when '-cpu host'
is passed, and according to git bisect it's caused by the following commit:
commit 66e3dd9282141b5ae75637c9676002cf3ceeb988
Author: Avi Kivity <avi@redhat.com>
Date: Wed Nov 9 15:44:36 2011 +0200
i386: derive '-cpu host' from KVM_GET_SUPPORTED_CPUID
Not sure if this is important, but here's procinfo information about
one of my host's cpus:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Core(TM)2 Duo CPU T9600 @ 2.80GHz
stepping : 6
cpu MHz : 2801.000
cache size : 6144 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 10
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 lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 5585.87
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
next reply other threads:[~2011-11-24 18:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-24 18:03 Luiz Capitulino [this message]
2011-11-25 14:12 ` [Qemu-devel] [BUG 1.0] -cpu host breaks linux guest boot Alon Levy
2011-11-25 14:37 ` Luiz Capitulino
2011-11-25 15:44 ` Alon Levy
2011-11-27 13:04 ` Avi Kivity
2011-11-27 17:13 ` Anthony Liguori
2011-11-28 14:00 ` Luiz Capitulino
2011-11-28 14:11 ` Anthony Liguori
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