Start VM with QEMU

[shinohara-rin]

• amd64
• aarch64
  - [ ] i386
  - [ ] riscv64

[cocoa-xu]

I tested the following commands to start aarch64 FreeBSD

qemu-system-aarch64 \
  -M virt,gic-version=3 \
  -cpu cortex-a72 \
  -smp 4 \
  -bios edk2-aarch64-code.fd \
  -m 3072 \
  -nographic \
  -drive if=none,file=FreeBSD-14.0-RELEASE-arm64-aarch64.qcow2,id=drv,format=qcow2 \
  -device virtio-blk-pci,drive=drv \
  -device virtio-net-pci,netdev=net0 \
  -netdev user,id=net0,hostfwd=tcp:127.0.0.1:2234-:22 \
  -device virtio-rng-pci

[cocoa-xu]

We should allow users to change the value of smp and m, which is the number of cores and memory size in the vm. And by default we can set smp to the number of cores available on the host machine, and 3072 (MB) as the memory size.

[cocoa-xu]

For x86_64 and i386 VMs, we can use the following commands, (using x86_64 FreeBSD image as example)

qemu-system-x86_64 \
  -M pc \
  -cpu cortex-a72 \
  -smp 4 \
  -bios /usr/share/qemu/OVMF.fd \
  -m 3072 \
  -nographic \
  -drive if=none,file=FreeBSD-14.0-RELEASE-amd64.qcow2,id=drv,format=qcow2 \
  -device virtio-blk-pci,drive=drv \
  -device virtio-net-pci,netdev=net0 \
  -netdev user,id=net0,hostfwd=tcp:127.0.0.1:2234-:22 \
  -device virtio-rng-pci