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Given the testing results from Shuping Cui (see Comment 23) and a discussion with Radim, I proposed to close this bug as it can't be reproduced anymore.
-Wei
Version-Release number of selected component (if applicable): kernel-3.10.0-123.el7.x86_64 qemu-kvm-1.5.3-64.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. install win8.0-64 guest with ide and e1000 /usr/libexec/qemu-kvm \ -name 'virt-tests-vm1' \ -sandbox off \ -M pc \ -nodefaults \ -vga qxl \ -global qxl-vga.vram_size=33554432 \ -device intel-hda,bus=pci.0,addr=03 \ -device hda-duplex \ -chardev socket,id=qmp_id_qmpmonitor1,path=/tmp/monitor-qmpmonitor1-20140623-164127-u3YgDv1h,server,nowait \ -mon chardev=qmp_id_qmpmonitor1,mode=control \ -chardev socket,id=serial_id_serial0,path=/tmp/serial-serial0-20140623-164127-u3YgDv1h,server,nowait \ -device isa-serial,chardev=serial_id_serial0 \ -device virtio-serial-pci,id=virtio_serial_pci0,bus=pci.0,addr=04 \ -chardev socket,id=devvs,path=/tmp/virtio_port-vs-20140623-164127-u3YgDv1h,server,nowait \ -device virtserialport,chardev=devvs,name=vs,id=vs,bus=virtio_serial_pci0.0 \ -chardev socket,id=seabioslog_id_20140623-164127-u3YgDv1h,path=/tmp/seabios-20140623-164127-u3YgDv1h,server,nowait \ -device isa-debugcon,chardev=seabioslog_id_20140623-164127-u3YgDv1h,iobase=0x402 \ -device nec-usb-xhci,id=usb1,bus=pci.0,addr=05 \ -drive id=drive_image1,if=none,cache=none,snapshot=off,aio=threads,file=/root/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win8-32.qcow2 \ -device ide-hd,id=image1,drive=drive_image1,bus=ide.0,unit=0 \ -device e1000,mac=9a:81:82:83:84:85,id=idncIJXf,netdev=idwCIwcl,bus=pci.0,addr=06 \ -netdev tap,id=idwCIwcl,fd=22 \ -m 4096 \ -smp 1,maxcpus=1,cores=1,threads=1,sockets=2 \ -cpu 'Opteron_G2',+sep,+kvm_pv_unhalt,hv_relaxed,hv_spinlocks=0x1fff,hv_vapic,hv_time \ -drive id=drive_cd1,if=none,snapshot=off,aio=threads,media=cdrom,file=/root/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/isos/ISO/Win8/en_windows_8_enterprise_x86_dvd_917587.iso \ -device ide-cd,id=cd1,drive=drive_cd1,bus=ide.0,unit=1 \ -drive id=drive_winutils,if=none,snapshot=off,aio=threads,media=cdrom,file=/root/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/isos/windows/winutils.iso \ -device ide-cd,id=winutils,drive=drive_winutils,bus=ide.1,unit=0 \ -drive id=drive_unattended,if=none,snapshot=off,aio=threads,media=cdrom,file=/root/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win8-32/autoinstall.iso \ -device ide-cd,id=unattended,drive=drive_unattended,bus=ide.1,unit=1 \ -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 \ -spice port=3000,password=123456,addr=0,image-compression=auto_glz,zlib-glz-wan-compression=auto,streaming-video=all,agent-mouse=on,playback-compression=on,ipv4 \ -rtc base=localtime,clock=host,driftfix=slew \ -boot order=cdn,once=d,menu=off \ -enable-kvm Additional info: 1. tested with virtio-net-pci and rtl8139, not met this bug, installation successfully. 2. host cpus info: processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 67 model name : Dual-Core AMD Opteron(tm) Processor 1216 stepping : 3 cpu MHz : 2400.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 1 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 rdtscp lm 3dnowext 3dnow rep_good nopl extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy bogomips : 4822.13 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc 3. this bug can reproduce on qemu-kvm-1.5.3-59.el7.x86_64, so not a Regression.