Comment 7 for bug 1921880

So overall we'd need (in order to apply) to Focal (and less
to later versions):

Libvirt
bug tag hash subject
1921880 v6.5.0 6ea3bb19 cpu_map: Add missing x86 features in 0x7 CPUID leaf
1921880 v6.5.0 892b7c70 cpu_map: Add missing x86 features in 0x80000008 CPUID leaf
1921880 v6.5.0 96a39aad cpu_map: Add missing AMD SVM features
1921880 v7.0.0 8c5c660b cpu_map: Add support for fsrm CPU feature
1921754 v7.2.0 5c17a7ba cpumap: Add support for ibrs CPU feature
1921880 v7.2.0 5ac6ab2f cpumap: Add support for svme-addr-check CPU feature
1921880 v7.2.0 f321a482 cpu_map: Add EPYC-Milan x86 CPU model
1921880 v7.2.0 d3de79db cpu_map: Install x86_EPYC-Milan.xml
1921880 v7.2.0 b5abf9a1 cpu_map: Fix spelling of svme-addr-chk feature

Qemu
bug tag hash subject
1921880 v5.0.0 143c30d4 i386: Add 2nd Generation AMD EPYC processors
1921880 v5.1.0 5cb287d2 target/i386: add fast short REP MOV support
1921880 v6.0.0 5447089c x86/cpu: Populate SVM CPUID feature bits
1921880 v6.0.0 623972ce i386: Add the support for AMD EPYC 3rd generation processors
1921754 v? not-merged https://lists.gnu.org/archive/html/qemu-devel/2021-03/msg01020.html