Re: Aarch64 stand-alone application for Xen

[Bertrand Marquis <Bertrand.Marquis@xxxxxxx>]

Hi Mathieu,

> On 8 Dec 2021, at 00:06, Mathieu Poirier <mathieu.poirier@xxxxxxxxxx> wrote:
> 
> Hi Bertrand,
> 
> On Fri, 26 Nov 2021 at 03:32, Bertrand Marquis <Bertrand.Marquis@xxxxxxx> 
> wrote:
>> 
>> Hi Mathieu,
>> 
>>> On 25 Nov 2021, at 22:59, Mathieu Poirier <mathieu.poirier@xxxxxxxxxx> 
>>> wrote:
>>> 
>>> Good day,
>>> 
>>> I am in the process of adding support for aarch64 to the xen-sys
>>> crate[1].  The crate currently supports x86_64 and includes a
>>> stand-alone "oxerun" application that can be used to validate
>>> hypercalls.  My goal is to provide the same functionality on arm64.  I
>>> am looking for a stand-alone aarch64 example, something like an "hello
>>> world" to help me with the assembler startup code.
>> 
>> We are working on porting XTF to arm64 and already have something running.
>> I think it could be a good starting point for you:
>> https://github.com/orzelmichal/xtf/tree/arm-devel
> 
> Quick one - have you been able to get the "test-arm-64le-example"
> application to run?

Yes we are running this.

>  So far Xen gives me the following error:
> 
> (XEN) ****************************************
> (XEN) Panic on CPU 0:
> (XEN) Unable to copy the kernel in the hwdom memory
> (XEN) ****************************************
> 
> I wanted to check with you before starting to dig into it.

Probably a setup issue here.
We are running most of the time XTF as a xen guest but we also check that it 
works as Dom0.

I added Michal Orzel in copy who is doing all the work on XTF, he will be able 
to help you more then me :-)

Do not hesitate to provide more info on your setup and target if you want us to 
help.

Regards
Bertrand

> 
> Thanks,
> Mathieu
> 
>> 
>> Regards
>> Bertrand
>> 
>>> 
>>> Many thanks for the consideration,
>>> Mathieu
>>> 
>>> [1]. https://crates.io/crates/xen-sys