From: "Jun'ichi Nomura" <j-nomura@ce.jp.nec.com>
To: kvm@vger.kernel.org
Subject: regression in v3.9? a guest stuck in BIOS if emulate_invalid_guest_state=Y
Date: Tue, 07 May 2013 18:55:23 +0900 [thread overview]
Message-ID: <5188CF8B.8040809@ce.jp.nec.com> (raw)
Hello,
With v3.9 kernel and Nehalem CPU (i.e. unrestricted_guest=N),
a guest stuck during boot (seemingly in BIOS).
When setting emulate_invalid_guest_state=0, it does boot.
(With v3.8 kernel and older, the guest used to boot fine by default.)
The userspace is qemu-kvm of RHEL6.
It seems the guest boots up fine with upstream qemu 1.4.1.
Is this a kernel bug? Or is the userspace just too old to run on v3.9?
# virsh start vm12; virsh console vm12
Domain vm12 started
Connected to domain vm12
Escape character is ^]
Google, Inc.
Serial Graphics Adapter 07/26/11
SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (mockbuild@hs20-bc2-3.build.redhat.com) Tue Jul 26 15:05:08 UTC 2011
Term:
<Ctrl-]>
# virsh qemu-monitor-command vm12 --hmp info registers
EAX=f000e850 EBX=0000ffff ECX=00000000 EDX=0000ffff
ESI=00000104 EDI=00000060 EBP=00000000 ESP=00006eb0
EIP=000006ca EFL=00000046 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0040 00000400 ffffffff 00809300
CS =c000 000c0000 ffffffff 00809b00
SS =0000 00000000 ffffffff 00809300
DS =0040 00000400 ffffffff 00809300
FS =0000 00000000 ffffffff 00809300
GS =0000 00000000 ffffffff 00809300
LDT=0000 00000000 0000ffff 00008200
TR =0000 00000000 0000ffff 00008b00
GDT= 000fc558 00000037
IDT= 00000000 000003ff
CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000
DR0=00000000 DR1=00000000 DR2=00000000 DR3=00000000
DR6=ffff0ff0 DR7=00000400
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000
XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000
XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000
XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000
# cat /sys/module/kvm_intel/parameters/emulate_invalid_guest_state
Y
# cat /sys/module/kvm_intel/parameters/unrestricted_guest
N
--
Jun'ichi Nomura, NEC Corporation
next reply other threads:[~2013-05-07 10:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-07 9:55 Jun'ichi Nomura [this message]
2013-05-07 10:35 ` regression in v3.9? a guest stuck in BIOS if emulate_invalid_guest_state=Y Gleb Natapov
2013-05-07 11:05 ` Jun'ichi Nomura
2013-05-07 12:06 ` Gleb Natapov
2013-05-07 14:46 ` Paolo Bonzini
2013-05-07 15:04 ` Gleb Natapov
2013-05-07 16:11 ` Paolo Bonzini
2013-05-08 3:22 ` Jun'ichi Nomura
2013-05-08 7:34 ` Jun'ichi Nomura
2013-05-08 8:29 ` Paolo Bonzini
2013-05-10 2:51 ` Jun'ichi Nomura
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