Re: [Qemu-devel] Crash when running hello-world unikernel for ARM

[Alex Bennée]

Ajay Garg <address@hidden> writes:

> Hi All.
>
> We did the following :
>
> a)
> Cross-compile rumprun for ARM on a linux x86_64 :
>
> address@hidden:~/rumprun-arm-hw/rumprun$
> CC=arm-linux-gnueabihf-gcc ./build-rr.sh hw
<snip>
>
> c)
> Tried running on x86_64, via qemu, but got the crash :
>
> ######################################################################
> address@hidden:~/rumprun-arm-hw/rumprun$ qemu-system-x86_64
> -nographic -kernel helloer.bin
> warning: TCG doesn't support requested feature: CPUID.01H:ECX.vmx [bit 5]
> qemu: fatal: Trying to execute code outside RAM or ROM at 0x00000000000a01f1
>
<snip>
>
>
> Where should we be looking to start to fix?

qemu-system-x86_64 is expecting an x86 binary blob. I assume you need
qemu-system-arm. More importantly you need to specify a -M machine type
that matches whatever rumprun is expecting.

--
Alex Bennée