Old:
qemu 1:4.2-3ubuntu6.15, libvirt 6.0.0-0ubuntu8.8
# qemu-system-x86_64 -cpu ? | grep Rome
x86 EPYC-Rome (alias configured by machine type)
x86 EPYC-Rome-v1 AMD EPYC-Rome Processor
# virsh domcapabilities
<mode name='host-model' supported='yes'>
<model fallback='forbid'>EPYC-Rome</model>
<vendor>AMD</vendor>
<feature policy='require' name='x2apic'/>
<feature policy='require' name='tsc-deadline'/>
<feature policy='require' name='hypervisor'/>
<feature policy='require' name='tsc_adjust'/>
<feature policy='require' name='spec-ctrl'/>
<feature policy='require' name='stibp'/>
<feature policy='require' name='arch-capabilities'/>
<feature policy='require' name='ssbd'/>
<feature policy='require' name='xsaves'/>
<feature policy='require' name='cmp_legacy'/>
<feature policy='require' name='invtsc'/>
<feature policy='require' name='amd-ssbd'/>
<feature policy='require' name='virt-ssbd'/>
<feature policy='require' name='rdctl-no'/>
<feature policy='require' name='skip-l1dfl-vmentry'/>
<feature policy='require' name='mds-no'/>
<feature policy='require' name='pschange-mc-no'/>
</mode>
New:
# qemu-system-x86_64 -cpu ? | grep Rome
x86 EPYC-Rome (alias configured by machine type)
x86 EPYC-Rome-v1 AMD EPYC-Rome Processor
x86 EPYC-Rome-v2 AMD EPYC-Rome Processor
# virsh domcapabilities
<mode name='host-model' supported='yes'>
<model fallback='forbid'>EPYC-Rome</model>
<vendor>AMD</vendor>
<feature policy='require' name='x2apic'/>
<feature policy='require' name='tsc-deadline'/>
<feature policy='require' name='hypervisor'/>
<feature policy='require' name='tsc_adjust'/>
<feature policy='require' name='spec-ctrl'/>
<feature policy='require' name='stibp'/>
<feature policy='require' name='arch-capabilities'/>
<feature policy='require' name='ssbd'/>
<feature policy='require' name='xsaves'/>
<feature policy='require' name='cmp_legacy'/>
<feature policy='require' name='invtsc'/>
<feature policy='require' name='ibrs'/>
<feature policy='require' name='amd-ssbd'/>
<feature policy='require' name='virt-ssbd'/>
<feature policy='require' name='rdctl-no'/>
<feature policy='require' name='skip-l1dfl-vmentry'/>
<feature policy='require' name='mds-no'/>
<feature policy='require' name='pschange-mc-no'/>
</mode>
Instance with ibrs flag can now be run
processor : 0
vendor_id : AuthenticAMD
cpu family : 23
model : 49
model name : AMD EPYC-Rome Processor
stepping : 0
microcode : 0x1000065
cpu MHz : 2495.312
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
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 pdpe1gb
rdtscp lm rep_good nopl cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3
fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor
lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw
topoext perfctr_core ssbd ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2
rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves clzero
xsaveerptr wbnoinvd arat npt nrip_save umip rdpid
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
bogomips : 4990.62
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
Migration of guest (e.g. with EPYC-IBPB or EPYC-Rome) from previous version to
proposed still works.
Migration of guest (EPYC-Rome with ibrs) to previous version doesn't (as
expected)
** Tags removed: verification-needed-focal
** Tags added: verification-done-focal
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https://bugs.launchpad.net/bugs/1921754
Title:
Add missing cpu feature bits in EPYC-Rome model
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