message: specifiy the prefered CPU
  Conseuently, we disable some host features to avoid bugs like
diff: @@ -106,15 +106,15 @@ test:qemu:
  - cd -
  - qemu-system-x86_64 -display none -smp 1 -m 64M -serial stdio
  -kernel $CI_BUILDS_DIR/loader/target/x86_64-unknown-hermit-loader/debug/rusty-loader
  - -initrd rusty-hermit/target/x86_64-unknown-hermit/debug/rusty_demo -cpu host -enable-kvm
  + -initrd rusty-hermit/target/x86_64-unknown-hermit/debug/rusty_demo -enable-kvm
  - qemu-system-x86_64 -display none -smp 2 -m 64M -serial stdio
  -kernel $CI_BUILDS_DIR/loader/target/x86_64-unknown-hermit-loader/debug/rusty-loader
  - -initrd rusty-hermit/target/x86_64-unknown-hermit/debug/rusty_demo -cpu host -enable-kvm
  + -initrd rusty-hermit/target/x86_64-unknown-hermit/debug/rusty_demo -cpu qemu64,apic,fsgsbase,rdtscp,xsave,fxsr,rdrand -enable-kvm
  - qemu-system-x86_64 -display none -smp 1 -m 64M -serial stdio
  -kernel $CI_BUILDS_DIR/loader/target/x86_64-unknown-hermit-loader/release/rusty-loader
  - -initrd rusty-hermit/target/x86_64-unknown-hermit/release/rusty_demo -cpu host -enable-kvm
  + -initrd rusty-hermit/target/x86_64-unknown-hermit/release/rusty_demo -cpu qemu64,apic,fsgsbase,rdtscp,xsave,fxsr,rdrand -enable-kvm
  - qemu-system-x86_64 -display none -smp 2 -m 64M -serial stdio
  -kernel $CI_BUILDS_DIR/loader/target/x86_64-unknown-hermit-loader/release/rusty-loader
  - -initrd rusty-hermit/target/x86_64-unknown-hermit/release/rusty_demo -cpu host -enable-kvm
  + -initrd rusty-hermit/target/x86_64-unknown-hermit/release/rusty_demo -cpu qemu64,apic,fsgsbase,rdtscp,xsave,fxsr,rdrand -enable-kvm
  tags:
  - privileged
  