Re: [Minios-devel] Support for Xen platform on aarch64

[Felipe Huici <Felipe.Huici@xxxxxxxxx>]

Hi Peter,

Regarding Xen support, we have:

* x86_64 support, including nw/block drivers (the drivers are not upstreamed 
yet but available on the list: 
https://patchwork.unikraft.org/project/unikraft/list/).
* ARM32 hello world support, with no drivers.

(We also have KVM/x86_64 hello world support, with internal drivers.)

We do not support aarch64 on Xen yet but there are quite a few places that have 
code that could be re-used to add that support:
                                                                                
                                                                                
                                                                              
- plat/kvm/arm, plat/common/arm for the arm specific architecture code          
                                                                                
                                                                              
    - Set up the pagetable                                                      
                                                                                
                                                                              
    - Exception vector                                                          
                                                                                
                                                                              
    - Boot Image format- We use ELF format qemu but for Xen we need to support 
zImage.                                                                         
                                                                               
- Unikraft support Xen platform on x86, arm32.                                  
                                                                                
                                                                              
    - Driver support for network, block available in the mailing list.          
                                                                                
                                                                              
- Use OSv as reference for Aarch64 xen.                                         
                                                                                
                                                                              
- Most Unikraft libraries are agnostic to the platform.

If you're interested and it'd help, we would be happy to have a brief call to 
ouline this better.

-- Felipe

On 27.09.19, 18:44, "Minios-devel on behalf of Peter Smith" 
<minios-devel-bounces@xxxxxxxxxxxxxxxxxxxx on behalf of salerio@xxxxxxxxx> 
wrote:

    The question about how a Unikraft kernel can be built for ARMv8, I’m 
interested in running a Unikraft kernel on Xilinx US+ MPSoC (A53) on top on 
Xilinx’s Xen. 
    
    
    
    Peter
    
    On Fri, 27 Sep 2019 at 12:27, Felipe Huici <Felipe.Huici@xxxxxxxxx> wrote:
    
    
    Hi Peter,
    
    Are you asking about how to build a minios or Unikraft unikernel/guest for 
ARM? Or is your question about a Xen installation on an ARM device?
    
    Thanks,
    
    -- Felipe
    
    ============================================================
    Dr. Felipe Huici
    Chief Researcher, Systems and Machine Learning Group
    NEC Laboratories Europe GmbH
    Kurfuerstenanlage 36, D-69115 Heidelberg 
<https://www.google.com/maps/search/Kurfuerstenanlage+36,+D-69115+Heidelberg?entry=gmail&source=g>
    Tel.  +49
    (0)6221 4342-241
    Fax:  +49
    (0)6221 4342-155
    
    e-mail:
    felipe.huici@xxxxxxxxx
    ============================================================
    Registered at Amtsgericht Mannheim, Germany, HRB728558
    
    On 26.09.19, 19:28, "Minios-devel on behalf of Peter Smith" 
<minios-devel-bounces@xxxxxxxxxxxxxxxxxxxx on behalf of
    salerio@xxxxxxxxx> wrote:
    
    
        Newbie question, what needs to be done to create an aarch64 Xen 
platform? It would be great if someone knowledgeable could outline the steps 
required, we are possibly interested in contributing...
    
    
        Best Regards
        Peter
    
    
    
    
    
    
    
    
    
    
    -- 
    Best Regards
    Peter
    
    
    

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