[Qemu-arm] "Unable to find CPU definition" Error on aarch64

[Yasutaka, T]

Hi QEMU/ARM community,

I'm now trying to run QEMU on my aarch64 machine (Raspberry Pi 3 Model B).

I installed QEMU2.8.0 from source and the following command worked:

qemu-system-aarch64 -machine virt -cpu cortex-a53 -machine type=virt -nographic -smp 1 -m 256 -kernel aarch64-linux-3.15rc2-buildroot.img  --append "console=ttyAMA0"

However, when I changed "-cpu cortex-a53" to "-cpu host", it returns "qemu-system-aarch64: Unable to find CPU definition" error message. My lscpu says

address@hidden:~/os/guest1 $ lscpu

Architecture:          aarch64

Byte Order:            Little Endian

CPU(s):                4

On-line CPU(s) list:   0-3

Thread(s) per core:    1

Core(s) per socket:    4

Socket(s):             1

Model:                 4

CPU max MHz:           1200.0000

CPU min MHz:           600.0000

BogoMIPS:              38.40

Flags:                 fp asimd evtstrm crc32

and my /proc/cpuinfo is

address@hidden:~/os/guest1 $ cat /proc/cpuinfo

processor       : 0

BogoMIPS        : 38.40

Features        : fp asimd evtstrm crc32

CPU implementer : 0x41

CPU architecture: 8

CPU variant     : 0x0

CPU part        : 0xd03

CPU revision    : 4

(RPI3 has 4 cores and processor 1, 2, and 3 have the same stats)

(CPU part 0xd03 means Cortex-A53 which should supports virtualization) 

Why did QEMU complains this?

The kernel image is retrieved from https://www.bennee.com/~alex/blog/2014/05/09/running-linux-in-qemus-aarch64-system-emulation-mode/

Sincerely yours,

Yasutaka Tanaka