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Description of problem: Boot RHEL-3.9-32 or RHEL-3.9-PAE guest on AMD host, sibling number in guest behaves different if with/without vendor. Version-Release number of selected component (if applicable): # rpm -qa|grep qemu-kvm qemu-kvm-debuginfo-0.12.1.2-2.151.el6.x86_64 qemu-kvm-0.12.1.2-2.151.el6.x86_64 qemu-kvm-tools-0.12.1.2-2.151.el6.x86_64 Host cpuinfo: processor : 3 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) 9600B Quad-Core Processor stepping : 3 cpu MHz : 1150.000 cache size : 512 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 4 apicid : 3 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs npt lbrv svm_lock bogomips : 4587.44 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc 100mhzsteps hwpstate How reproducible: 100% Steps to Reproduce: 1./usr/libexec/qemu-kvm -M rhel6.1.0 -enable-kvm -m 4096 -smp 2,cores=2,threads=1,socket=2 -cpu Opteron_G3,+pbe,-nx,vendor="abcd1234THIS" -name rhel3u9-PAE -uuid `uuidgen` -rtc base=localtime,clock=vm,driftfix=slew -no-kvm-pit-reinjection -boot c -drive file=/mnt/images/RHEL-3.9-32-virtio.qcow2,if=none,id=drive-virtio-0-0,media=disk,format=qcow2,cache=none -device virtio-blk-pci,drive=drive-virtio-0-0,id=virt0-0-0 -netdev tap,id=hostnet1 -device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:40:81:11:53 -usb -device usb-tablet,id=input1 -vnc :0 -monitor stdio -balloon none 2. 3. Actual results: WITH vendor specified: grep "siblings" siblings : 1 siblings : 1 grep "physical id" | sort | uniq | wc -l 1 WITHOUT vendor specified: grep "siblings" siblings : 2 siblings : 2 grep "physical id" | sort | uniq | wc -l 1 Expected results: 1. number of siblings should be 2 2. cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l should output 2 Additional info:
The vendor string should be specific like GenuineIntel or AutheticAMD and not something you invented.
(In reply to comment #2) > The vendor string should be specific like GenuineIntel or AutheticAMD and not > something you invented. Hi Dor, I boot the guest without specifying the vendor id, seems the siblings value is still not right. If any wrong, please correct me. Thanks. CLI: /usr/libexec/qemu-kvm -M rhel6.1.0 -enable-kvm -m 4096 -smp 2,cores=4,threads=1,socket=2 -cpu Opteron_G3,-x2apic,+svm -name rhel4.9 ...-boot c -drive file=/mnt/images/RHEL-4.9-32-virtio.qcow2... processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 6 model name : AMD Opteron 23xx (Gen 3 Class Opteron) stepping : 1 cpu MHz : 2295.061 cache size : 512 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht pni syscall nx lm pni popcnt bogomips : 4598.44 processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 6 model name : AMD Opteron 23xx (Gen 3 Class Opteron) stepping : 1 cpu MHz : 2295.061 cache size : 512 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht pni syscall nx lm pni popcnt bogomips : 4857.89
Dor, Boot rhel3.9-32 guest with same cli except the vm image, cat /proc/cpuinfo outputs the correct siblings & cpu cores number in guest. processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 6 model name : AMD Opteron 23xx (Gen 3 Class Opteron) stepping : 1 cpu MHz : 2293.758 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 runqueue : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm bogomips : 4561.30 processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 6 model name : AMD Opteron 23xx (Gen 3 Class Opteron) stepping : 1 cpu MHz : 2293.758 cache size : 512 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 4 runqueue : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm bogomips : 4574.41
Seems "physical id" is wrong, too.