Re: [Qemu-devel] host doesn't support requested feature: CPUID.01H:EDX.ds [bit 21] Does this warn affect virtual machine performance or use?
On Thu, Sep 14, 2017 at 20:48:49 +0800, Paul Schlacter wrote: > this is my stackoverflow question: > https://stackoverflow.com/questions/46219552/host-doesnt-support-requested-feature-cpuid-01hedx-ds-bit-21-does-this-warn > > > I found a lot of warning from the VM qemu log, Does this warn affect > virtual machine performance or use? , is my libvirt.xml file problem? Or > support hot-plug will have these warnings > > This is my libvirt xml configuration: > > ... > > > > > > ... > 2017-09-14T12:16:03.441702Z qemu-kvm: warning: CPU(s) not present in > any NUMA nodes: 2 3 4 5 6 7 > 2017-09-14T12:16:03.441773Z qemu-kvm: warning: All CPU(s) up to > maxcpus should be described in NUMA config > warning: host doesn't support requested feature: CPUID.01H:EDX.ds [bit 21] > warning: host doesn't support requested feature: CPUID.01H:EDX.acpi [bit 22] > warning: host doesn't support requested feature: CPUID.01H:EDX.ht [bit 28] > warning: host doesn't support requested feature: CPUID.01H:EDX.tm [bit 29] ... Similar warnings are expected with host-model CPUs on older libvirt which didn't know how to ask QEMU what CPU features are supported on the host. Thus libvirt just used CPUID and asked for everything and QEMU filtered a lot of them. You need a recent QEMU and libvirt to avoid these warnings. Jirka
[Qemu-devel] host doesn't support requested feature: CPUID.01H:EDX.ds [bit 21] Does this warn affect virtual machine performance or use?
this is my stackoverflow question: https://stackoverflow.com/questions/46219552/host-doesnt-support-requested-feature-cpuid-01hedx-ds-bit-21-does-this-warn I found a lot of warning from the VM qemu log, Does this warn affect virtual machine performance or use? , is my libvirt.xml file problem? Or support hot-plug will have these warnings This is my libvirt xml configuration: instance-05b2 793fe065-36a6-4840-80cf-840ebed41d3e 68719476736 2097152 2097152 8 2048 /machine hvm /usr/libexec/qemu-kvm The following warn logļ¼ 2017-09-14T12:16:03.441702Z qemu-kvm: warning: CPU(s) not present in any NUMA nodes: 2 3 4 5 6 7 2017-09-14T12:16:03.441773Z qemu-kvm: warning: All CPU(s) up to maxcpus should be described in NUMA config warning: host doesn't support requested feature: CPUID.01H:EDX.ds [bit 21] warning: host doesn't support requested feature: CPUID.01H:EDX.acpi [bit 22] warning: host doesn't support requested feature: CPUID.01H:EDX.ht [bit 28] warning: host doesn't support requested feature: CPUID.01H:EDX.tm [bit 29] warning: host doesn't support requested feature: CPUID.01H:EDX.pbe [bit 31] warning: host doesn't support requested feature: CPUID.01H:ECX.dtes64 [bit 2] warning: host doesn't support requested feature: CPUID.01H:ECX.monitor [bit 3] warning: host doesn't support requested feature: CPUID.01H:ECX.ds_cpl [bit 4] warning: host doesn't support requested feature: CPUID.01H:ECX.vmx [bit 5] warning: host doesn't support requested feature: CPUID.01H:ECX.smx [bit 6] warning: host doesn't support requested feature: CPUID.01H:ECX.est [bit 7] warning: host doesn't support requested feature: CPUID.01H:ECX.tm2 [bit 8] warning: host doesn't support requested feature: CPUID.01H:ECX.xtpr [bit 14] warning: host doesn't support requested feature: CPUID.01H:ECX.pdcm [bit 15] warning: host doesn't support requested feature: CPUID.01H:ECX.dca [bit 18] warning: host doesn't support requested feature: CPUID.01H:ECX.osxsave [bit 27] warning: host doesn't support requested feature: CPUID.01H:EDX.ds [bit 21] warning: host doesn't support requested feature: CPUID.01H:EDX.acpi [bit 22] warning: host doesn't support requested feature: CPUID.01H:EDX.ht [bit 28] warning: host doesn't support requested feature: CPUID.01H:EDX.tm [bit 29] warning: host doesn't support requested feature: CPUID.01H:EDX.pbe [bit 31] warning: host doesn't support requested feature: CPUID.01H:ECX.dtes64 [bit 2] warning: host doesn't support requested feature: CPUID.01H:ECX.monitor [bit 3] warning: host doesn't support requested feature: CPUID.01H:ECX.ds_cpl [bit 4]
