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Diffstat (limited to 'results/classifier/105/KVM/1042561')
| -rw-r--r-- | results/classifier/105/KVM/1042561 | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/results/classifier/105/KVM/1042561 b/results/classifier/105/KVM/1042561 new file mode 100644 index 000000000..ae6e978ed --- /dev/null +++ b/results/classifier/105/KVM/1042561 @@ -0,0 +1,50 @@ +KVM: 0.794 +device: 0.721 +network: 0.531 +graphic: 0.525 +instruction: 0.507 +semantic: 0.460 +other: 0.455 +socket: 0.448 +boot: 0.388 +vnc: 0.373 +mistranslation: 0.339 +assembly: 0.230 + +Guest has no "xsave" feature with parameter "-cpu qemu64,+xsave" in qemu command line. + +Environment: +------------ +Host OS (ia32/ia32e/IA64):ia32e +Guest OS (ia32/ia32e/IA64):ia32e +Guest OS Type (Linux/Windows):Linux +kvm.git Commit:1a577b72475d161b6677c05abe57301362023bb2 +qemu-kvm Commit:98f1f30a89901c416e51cc70c1a08d9dc15a2ad4 +Host Kernel Version:3.5.0-rc1 +Hardware:Romley-EP, Ivy-bridge + + +Bug detailed description: +-------------------------- +Guest has no "xsave" feature when create guest with parameter "-cpu qemu64,+xsave,+avx" in qemu command line, but the guest has avx feature. +When starting a guest with parameter "-cpu host" in qemu command line, the guest has 'avx' and 'xsave' features (as /proc/cpuinfo shows). + +This is not a recent regression; it exists for a long time. + +Reproduce steps: +---------------- +1. qemu-system-x86_64 -m 1024 -smp 2 -hda rhel6u3.img -cpu qemu64,+xsave +2. cat /proc/cpuinfo | grep xsave ( check guest's xsave feature) + +Current result: +---------------- +The guest has no xsave feature + +Expected result: +---------------- +The guest has xsave feature + +Basic root-causing log: + +xsave needs level >= 13, and qemu64 has level=4. Try "-cpu qemu64,+xsave,+avx,level=13". + |