RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1183464 - qemu instance internal-error during PXE booting in OVMF env (iPXE oprom is in use)
Summary: qemu instance internal-error during PXE booting in OVMF env (iPXE oprom is in...
Keywords:
Status: CLOSED DUPLICATE of bug 1181980
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev
Version: 7.1
Hardware: Unspecified
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: Virtualization Maintenance
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-01-19 07:17 UTC by Xiaoqing Wei
Modified: 2015-01-26 08:00 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-01-26 08:00:25 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
grub2 stand alone image (8.35 MB, application/octet-stream)
2015-01-19 07:21 UTC, Xiaoqing Wei 		no flags Details
View All

Description Xiaoqing Wei 2015-01-19 07:17:29 UTC 
Description of problem:
qemu instance internal-error during PXE booting in OVMF env (iPXE oprom is in use)

Version-Release number of selected component (if applicable):
qemu-kvm-rhev-2.1.2-18.el7.x86_64
ipxe-roms-qemu-20130517-6.gitc4bce43.el7.noarch
ipxe-bootimgs-20130517-6.gitc4bce43.el7.noarch
ipxe-roms-20130517-6.gitc4bce43.el7.noarch
OVMF-20140822-7.git9ece15a.el7.x86_64
kernel-3.10.0-221.el7.x86_64

processor	: 3
vendor_id	: AuthenticAMD
cpu family	: 21
model		: 16
model name	: AMD A10-5800K APU with Radeon(tm) HD Graphics
How reproducible:


Steps to Reproduce:
1. Setup a pxe server and create a standalone grub2 image:

convert grub2-efi rpms into files, and copy the grubx64.efi to tftp server
/root/cpio-grub2-efi

mkdir -p /tftproot/non-secboot ; cd /tftproot/non-secboot
mkdir -p boot/grub

--
# cat boot/grub/grub.cfg 
set timeout=5

menuentry 'Red Hat Enterprise Linux Server release 7.0 GA' --class os {
     insmod net 
     insmod efinet
     insmod tftp
     insmod gzio
     insmod part_gpt
     insmod efi_gop
     insmod efi_uga

     # dhcp, tftp server in my network
     set net_default_server=192.168.0.1

     echo 'Network status: '
     net_ls_cards
     net_ls_addr
     net_ls_routes

     echo 'Loading Red Hat Enterprise Linux Server release 7.0 GA kernel ...'
     linuxefi (tftp)/rhel70ga/vmlinuz ip=dhcp \
     inst.repo=nfs:192.168.0.1:/home/installation_source/RHEL7.0GA/RHEL-7.0-20140507.0-Server-x86_64-dvd1.iso

     echo 'Loading Red Hat Enterprise Linux Server release 7.0 GA initial ramdisk ...'
     initrdefi (tftp)/rhel70ga/initrd.img
}
--

grub2-mkstandalone -d /root/cpio-grub2-efi/usr/lib/grub/x86_64-efi/ -O x86_64-efi --fonts="unicode" -o non-secbootx64.efi boot/grub/grub.cfg

and configure dhcpd to use that file:
# cat /etc/dhcp/dhcpd.conf 
#
# DHCP Server Configuration file.
#   see /usr/share/doc/dhcp*/dhcpd.conf.example
#   see dhcpd.conf(5) man page
#
option space PXE;
option PXE.mtftp-ip    code 1 = ip-address;
option PXE.mtftp-cport code 2 = unsigned integer 16;
option PXE.mtftp-sport code 3 = unsigned integer 16;
option PXE.mtftp-tmout code 4 = unsigned integer 8;
option PXE.mtftp-delay code 5 = unsigned integer 8;
option arch code 93 = unsigned integer 16; # RFC4578

subnet 192.168.0.0 netmask 255.255.255.0 {
#  option routers 10.0.0.254;
  range 192.168.0.2 192.168.0.250;

  class "pxeclients" {
    match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";
    next-server 192.168.0.1;
    if option arch = 00:07 {
      filename "non-secboot/non-secbootx64.efi";
      } else if option arch = 00:09 {
      filename "non-secboot/non-secbootx64.efi";
      }
    }
  }


2. pxe boot a ovmf guest(using iPXE oprom)
2015-01-19 06:53:25.757+0000: starting up
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=spice /usr/libexec/qemu-kvm -name uefi-rhel66 -S -machine pc-i440fx-rhel7.1.0,accel=kvm,usb=off -drive file=/usr/share/OVMF/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on -drive file=/var/lib/libvirt/qemu/nvram/uefi-rhel6_VARS.fd,if=pflash,format=raw,unit=1 -m 2048 -realtime mlock=off -smp 4,sockets=4,cores=1,threads=1 -uuid a4c10d00-ac50-400f-b05e-c629ffa7a020 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/uefi-rhel66.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot menu=on,strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x5 -device virtio-scsi-pci,id=scsi1,bus=pci.0,addr=0x9 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4 -drive file=/var/lib/libvirt/images/uefi-rhel6.img,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=3 -drive file=/usr/share/OVMF/UefiShell.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw,cache=none,aio=native -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=2 -netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=25 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:96:79:19,bus=pci.0,addr=0x3,bootindex=1 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -spice port=5901,addr=0.0.0.0,disable-ticketing,seamless-migration=on -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -msg timestamp=on
char device redirected to /dev/pts/2 (label charserial0)
main_channel_link: add main channel client
main_channel_handle_parsed: net test: latency 3.933000 ms, bitrate 616125150 bps (587.582731 Mbps)
inputs_connect: inputs channel client create
red_dispatcher_set_cursor_peer: 

3. as I seeing the tftp transfer showing 71% for a while(1~2min),
then I check whether the VM is alive, and see Boom !

from the libvirt log:
-------------
KVM internal error. Suberror: 1
emulation failure
RAX=00000000e7ffff8f RBX=000000007e61ddf8 RCX=3ffffffffffb4600 RDX=000000007e750030
RSI=000000007e74c002 RDI=000000007e606e72 RBP=000000007e611a68 RSP=000000007ff67fd8
R8 =0000000000000000 R9 =000000007ff681b0 R10=00000000000003fd R11=0000000000000040
R12=000000007ff681b0 R13=0000000000000000 R14=000000007e612630 R15=000000007ff681a8
RIP=000000007e4d86f9 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
CS =0028 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
DS =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
FS =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
GS =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
LDT=0000 0000000000000000 0000ffff 00008200 DPL=0 LDT
TR =0000 0000000000000000 0000ffff 00008b00 DPL=0 TSS64-busy
GDT=     000000007fef0d98 0000003f
IDT=     000000007f32b018 00000fff
CR0=80000033 CR2=0000000000000000 CR3=000000007ff07000 CR4=00000668
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000500
Code=0c 50 b6 00 00 2d 3a 00 00 0c 50 c7 00 00 2d 3b 00 00 0c 50 <d8> 00 00 2d 3c 00 00 0c 50 eb 00 00 2d 3d 00 00 0c 50 fd 00 00 2d 3e 00 00 0c 51 0e 00 00
Domain id=47 is tainted: custom-monitor
---------------

[root@dhcp-11-50 ~]# virsh qemu-monitor-command uefi-rhel66 --hmp --cmd "info status"
VM status: paused (internal-error)

[root@dhcp-11-50 ~]# virsh qemu-monitor-command uefi-rhel66 --hmp --cmd "info registers"
RAX=00000000e7ffff8f RBX=000000007e61ddf8 RCX=3ffffffffffb4600 RDX=000000007e750030
RSI=000000007e74c002 RDI=000000007e606e72 RBP=000000007e611a68 RSP=000000007ff67fd8
R8 =0000000000000000 R9 =000000007ff681b0 R10=00000000000003fd R11=0000000000000040
R12=000000007ff681b0 R13=0000000000000000 R14=000000007e612630 R15=000000007ff681a8
RIP=000000007e4d86f9 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
CS =0028 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
DS =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
FS =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
GS =0008 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
LDT=0000 0000000000000000 0000ffff 00008200 DPL=0 LDT
TR =0000 0000000000000000 0000ffff 00008b00 DPL=0 TSS64-busy
GDT=     000000007fef0d98 0000003f
IDT=     000000007f32b018 00000fff
CR0=80000033 CR2=0000000000000000 CR3=000000007ff07000 CR4=00000668
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000500
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
XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000
XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000
XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000
XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000


Actual results:
qemu instance dies

Expected results:
qemu should keep alive and guest able to finish pxe process

Additional info:

processor	: 3
vendor_id	: AuthenticAMD
cpu family	: 21
model		: 16
model name	: AMD A10-5800K APU with Radeon(tm) HD Graphics  
stepping	: 1
cpu MHz		: 3800.000
cache size	: 2048 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 2
apicid		: 19
initial apicid	: 3
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1
bogomips	: 7586.08
TLB size	: 1536 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro

[root@dhcp-11-50 ~]# lscpu 
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                4
On-line CPU(s) list:   0-3
Thread(s) per core:    2
Core(s) per socket:    2
Socket(s):             1
NUMA node(s):          1
Vendor ID:             AuthenticAMD
CPU family:            21
Model:                 16
Model name:            AMD A10-5800K APU with Radeon(tm) HD Graphics
Stepping:              1
CPU MHz:               3800.000
BogoMIPS:              7586.08
Virtualization:        AMD-V
L1d cache:             16K
L1i cache:             64K
L2 cache:              2048K
NUMA node0 CPU(s):     0-3


# virsh dumpxml uefi-rhel66
<domain type='kvm' id='47'>
  <name>uefi-rhel66</name>
  <uuid>a4c10d00-ac50-400f-b05e-c629ffa7a020</uuid>
  <memory unit='KiB'>2097152</memory>
  <currentMemory unit='KiB'>2097152</currentMemory>
  <vcpu placement='static'>4</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.1.0'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>
    <nvram template='/usr/share/OVMF/OVMF_VARS.fd'>/var/lib/libvirt/qemu/nvram/uefi-rhel6_VARS.fd</nvram>
    <bootmenu enable='yes'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none' io='native'/>
      <source file='/var/lib/libvirt/images/uefi-rhel6.img'/>
      <backingStore/>
      <target dev='vda' bus='virtio'/>
      <boot order='3'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw' cache='none' io='native'/>
      <source file='/usr/share/OVMF/UefiShell.iso'/>
      <backingStore/>
      <target dev='hdc' bus='ide'/>
      <readonly/>
      <shareable/>
      <boot order='2'/>
      <alias name='ide0-1-0'/>
      <address type='drive' controller='0' bus='1' target='0' unit='0'/>
    </disk>
    <controller type='usb' index='0'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'>
      <alias name='pci.0'/>
    </controller>
    <controller type='ide' index='0'>
      <alias name='ide0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='ide' index='1'>
      <alias name='ide1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <alias name='virtio-serial0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </controller>
    <controller type='scsi' index='0'>
      <alias name='scsi0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </controller>
    <controller type='scsi' index='1' model='virtio-scsi'>
      <alias name='scsi1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:96:79:19'/>
      <source bridge='uefi-pxe'/>
      <target dev='vnet1'/>
      <model type='virtio'/>
      <boot order='1'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/2'/>
      <target port='0'/>
      <alias name='serial0'/>
    </serial>
    <console type='pty' tty='/dev/pts/2'>
      <source path='/dev/pts/2'/>
      <target type='serial' port='0'/>
      <alias name='serial0'/>
    </console>
    <channel type='spicevmc'>
      <target type='virtio' name='com.redhat.spice.0' state='disconnected'/>
      <alias name='channel0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='spice' port='5901' autoport='yes' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <video>
      <model type='cirrus' vram='16384' heads='1'/>
      <alias name='video0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <alias name='balloon0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </memballoon>
  </devices>
  <seclabel type='dynamic' model='selinux' relabel='yes'>
    <label>system_u:system_r:svirt_t:s0:c301,c662</label>
    <imagelabel>system_u:object_r:svirt_image_t:s0:c301,c662</imagelabel>
  </seclabel>
</domain>
Comment 1 Xiaoqing Wei 2015-01-19 07:21:58 UTC 
Created attachment 981355 [details]
grub2 stand alone image

searched out bz database and found something similar.

Bug 1088784 - qemu ' KVM internal error. Suberror: 1' when query cpu frequently during pxe boot in Intel "Q95xx" host
Bug 1078775 - During query cpuinfo during guest boot from ipxe repeatedly in AMD hosts, vm repeatedly reboot.
Bug 1097363 - qemu ' KVM internal error. Suberror: 1' when query cpu frequently during pxe boot in Intel "Q95xx" host
Comment 3 Xiaoqing Wei 2015-01-19 07:58:37 UTC 
(In reply to Xiaoqing Wei from comment #1)

Note: the 3 bugs pasted in C#1 are fixed, and they are using SeaBIOS, not OVMF
Comment 4 Laszlo Ersek 2015-01-22 22:38:52 UTC 
Please try to reproduce this issue against the build in bug 1181980 comment 28. This BZ could turn out a duplicate of bug 1181980 -- the patches for bug 1181980 should eliminate the code from iPXE that (apparently) caused an emulation failure here. Thanks.
Comment 5 Xiaoqing Wei 2015-01-26 06:27:18 UTC 
with ipxe-roms-qemu-20130517-6.gitc4bce43.el7.efi_fixes_2.noarch

using virtio-net-pci(oprom), 20 pxe, doesn't happen
/usr/libexec/qemu-kvm -name uefi-rhel66 -S -machine pc-i440fx-rhel7.1.0,accel=kvm,usb=off -drive file=/usr/share/OVMF/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on -drive file=/var/lib/libvirt/qemu/nvram/uefi-rhel6_VARS.fd,if=pflash,format=raw,unit=1 -m 2048 -realtime mlock=off -smp 4,sockets=4,cores=1,threads=1 -uuid a4c10d00-ac50-400f-b05e-c629ffa7a020 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/uefi-rhel66.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot menu=on,strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x5 -device virtio-scsi-pci,id=scsi1,bus=pci.0,addr=0x9 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4 -drive file=/var/lib/libvirt/images/uefi-rhel6.img,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=3 -drive file=/usr/share/OVMF/UefiShell.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw,cache=none,aio=native -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=2 \
\
\
-netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=25 \
\
-device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:96:79:19,bus=pci.0,addr=0x3,bootindex=1 \
\
\
-chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -spice port=5901,addr=0.0.0.0,disable-ticketing,seamless-migration=on -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -msg timestamp=on
Comment 6 Laszlo Ersek 2015-01-26 08:00:25 UTC 
(In reply to Xiaoqing Wei from comment #5)
> with ipxe-roms-qemu-20130517-6.gitc4bce43.el7.efi_fixes_2.noarch
> 
> using virtio-net-pci(oprom), 20 pxe, doesn't happen

Cheers!

*** This bug has been marked as a duplicate of bug 1181980 ***
Note You need to log in before you can comment on or make changes to this bug.