Comment 17 for bug 1872401

Another note is that although this does not fix the hang on KVM instance, but I can see this test passed on B-AWS bare metals (was failing on previous cycle)

Instance c5.metal
4.15.0-1091.96 AWS
Test failed with timeout
https://pastebin.ubuntu.com/p/b77pbFdjf7/

4.15.0-1093.99 AWS
Test passed
6. 01/22 06:24:42 DEBUG| utils:0153| [stdout] timeout -k 1s --foreground 30 /usr/bin/qemu-system-x86_64 -nodefaults -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none -serial stdio -device pci-testdev -machine accel=kvm -kernel /tmp/tmp.lGWO5mvwC6 -smp 1 -cpu host,+vmx -append vmx_nm_test # -initrd /tmp/tmp.zlSuqJDX9u
7. 01/22 06:24:42 DEBUG| utils:0153| [stdout] enabling apic
8. 01/22 06:24:42 DEBUG| utils:0153| [stdout] paging enabled
9. 01/22 06:24:42 DEBUG| utils:0153| [stdout] cr0 = 80010011
10. 01/22 06:24:42 DEBUG| utils:0153| [stdout] cr3 = 477000
11. 01/22 06:24:42 DEBUG| utils:0153| [stdout] cr4 = 20
12. 01/22 06:24:42 DEBUG| utils:0153| [stdout]
13. 01/22 06:24:42 DEBUG| utils:0153| [stdout] Test suite: vmx_nm_test
14. 01/22 06:24:42 DEBUG| utils:0153| [stdout] PASS: fnop with CR0.TS set in L2 triggers #NM VM-exit to L1
15. 01/22 06:24:42 DEBUG| utils:0153| [stdout] PASS: fnop with CR0.EM set in L2 triggers #NM VM-exit to L1
16. 01/22 06:24:42 DEBUG| utils:0153| [stdout] SUMMARY: 9 tests
17. 01/22 06:24:42 DEBUG| utils:0153| [stdout] PASS vmx_nm_test (9 tests)