Hello,
I have a question regarding qemu-system-aarch64 running in a x86 host. I'd
like to boot an aarch64 Linux kernel (guest) that emulates the kvm support.
My command line is:
IMG=trusty-server-cloudimg-arm64-uefi1-gem5.raw.img
~/nosave/software/qemu-2.4.1/output/bin/qemu-system-aarch64 \
-m 4096 \
-cpu cortex-a57 \
-M virt \
-nographic \
-pflash flash0.img \
-pflash flash1.img \
-drive if=none,file=${IMG},id=hd0 \
-device virtio-blk-device,drive=hd0
I checked that the guest kernel supports kvm, and the bootloader is
supposed to enable the "hyp mode" required by the kernel to support kvm.
The bootloader is a pre-built UEFI for QEMU/AArch64 and was taken from
https://wiki.linaro.org/LEG/UEFIforQEMU
The kernel (3.19.0-33-generic) and disk image were taken from ubuntu cloud
images as described in https://wiki.ubuntu.com/ARM64/QEMU
qemu succesfully boots Ubuntu, but I see the following kernel message:
[ 2.710572] kvm [1]: HYP mode not available
Does qemu-system-aarch64 currently support a guest kvm-enabled Linux in a
x86 system?
As far as I understood, the flags "-enable-kvm" or "-M accel=kvm" are
equivalent and are supposed to allow the guest to use the virtualization
hardware in the host. Then, using them would make sense in an aarch64 host
booting an aarch64 guest.
Thanks in advance,
--
Fernando A. Endo, Post-doc
INRIA Rennes-Bretagne Atlantique
France
