[CentOS-devel] 8.2+Xeon: qemu-kvm: error: failed to set MSR 0x48e to 0xfff9fffe04006172

Adding +Miroslav Rezanina <mrezanin at redhat.com> , +Danilo Cesar Lemes de
Paula <ddepaula at redhat.com> and +Paolo Bonzini <pbonzini at redhat.com>

Il giorno sab 22 ago 2020 alle ore 03:04 Anthony Alba <
ascanio.alba7 at gmail.com> ha scritto:

> On 8.2, with modular virt installed OR switching to
> centos-release-advanced-virtualization I am seeing
>
> qemu-kvm: error: failed to set MSR 0x48e to 0xfff9fffe04006172
>
> when trying to create a VM with virt-install on a Dell PowerEdge R630
> with a Xeon E5-2640. The command works on a desktop Haswell.
>
> There was such a bug in RH bugzilla
> https://bugzilla.redhat.com/show_bug.cgi?id=1738741 but that is about
> nested virtualisation and L1->L1 migration with a L2 guest. I am not
> doing any such magick, just a plain L1 VM.
>
> I tried reloading kvm_intel with pml=0 but got the same error.
>
> qemu-kvm-4.2.0-19.el8.x86_64
> libvirt-6.0.0-17.el8.x86_64
>
> Any ideas? (See below, does intel_iommu have to be on?)
>
> The CPU type is
>
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 63
> model name      : Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz
> stepping        : 2
> microcode       : 0x43
> cpu MHz         : 2809.143
> cache size      : 20480 KB
> physical id     : 0
> siblings        : 16
> core id         : 0
> cpu cores       : 8
> apicid          : 0
> initial apicid  : 0
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 15
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
> syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts
> rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq
> dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm
> pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes
> xsave avx f16c rdrand lahf_lm abm cpuid_fault epb invpcid_single pti
> ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase
> tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm xsaveopt cqm_llc
> cqm_occup_llc dtherm ida arat pln pts md_clear flush_l1d
> bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass
> l1tf mds swapgs itlb_multihit
> bogomips        : 5200.46
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 46 bits physical, 48 bits virtual
> power management:
>
> # virt-host-validate
>   QEMU: Checking for hardware virtualization
>       : PASS
>   QEMU: Checking if device /dev/kvm exists
>       : PASS
>   QEMU: Checking if device /dev/kvm is accessible
>       : PASS
>   QEMU: Checking if device /dev/vhost-net exists
>       : PASS
>   QEMU: Checking if device /dev/net/tun exists
>       : PASS
>   QEMU: Checking for cgroup 'cpu' controller support
>       : PASS
>   QEMU: Checking for cgroup 'cpuacct' controller support
>       : PASS
>   QEMU: Checking for cgroup 'cpuset' controller support
>       : PASS
>   QEMU: Checking for cgroup 'memory' controller support
>       : PASS
>   QEMU: Checking for cgroup 'devices' controller support
>       : PASS
>   QEMU: Checking for cgroup 'blkio' controller support
>       : PASS
>   QEMU: Checking for device assignment IOMMU support
>       : PASS
>   QEMU: Checking if IOMMU is enabled by kernel
>       : WARN (IOMMU appears to be disabled in kernel. Add
> intel_iommu=on to kernel cmdline arguments)
> _______________________________________________
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>
>

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