Use hvf on macOS instead of falling back to tcg

[vashirov]

$ uname -a
Darwin MacBook-Pro.local 25.2.0 Darwin Kernel Version 25.2.0: Tue Nov 18 21:09:40 PST 2025; root:xnu-12377.61.12~1/RELEASE_ARM64_T6000 arm64

$ qemu-system-aarch64 -accel help
Accelerators supported in QEMU binary:
hvf
tcg

$ kcli create vm -i fedora43 fedora43
Deploying vm fedora43 from image fedora43...
Using machine virt-9.2
Forcing uefi
Hypervisor not compatible with nesting. Skipping
fedora43 created on mbp

$ kcli ssh fedora43
[fedora@fedora43 ~]$ uname -a
Linux fedora43 6.17.1-300.fc43.aarch64 #1 SMP PREEMPT_DYNAMIC Mon Oct  6 14:55:11 UTC 2025 aarch64 GNU/Linux
[fedora@fedora43 ~]$ lscpu
Architecture:                aarch64
  CPU op-mode(s):            64-bit
  Byte Order:                Little Endian
CPU(s):                      2
  On-line CPU(s) list:       0,1
Vendor ID:                   Apple
  Model name:                -
    Model:                   0
    Thread(s) per core:      1
    Core(s) per socket:      1
    Socket(s):               2
    Stepping:                0x0
    BogoMIPS:                48.00
    Flags:                   fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp
                              sha512 asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp flagm2 frint
NUMA:
  NUMA node(s):              1
  NUMA node0 CPU(s):         0,1
Vulnerabilities:
  Gather data sampling:      Not affected
  Ghostwrite:                Not affected
  Indirect target selection: Not affected
  Itlb multihit:             Not affected
  L1tf:                      Not affected
  Mds:                       Not affected
  Meltdown:                  Not affected
  Mmio stale data:           Not affected
  Old microcode:             Not affected
  Reg file data sampling:    Not affected
  Retbleed:                  Not affected
  Spec rstack overflow:      Not affected
  Spec store bypass:         Vulnerable
  Spectre v1:                Mitigation; __user pointer sanitization
  Spectre v2:                Mitigation; CSV2, but not BHB
  Srbds:                     Not affected
  Tsa:                       Not affected
  Tsx async abort:           Not affected
  Vmscape:                   Not affected
[fedora@fedora43 ~]$