Re: [Qemu-devel] Call for GSoC & Outreachy 2018 mentors & project ideas

[Alistair Francis]

On Tue, Feb 20, 2018 at 3:13 AM, Paolo Bonzini <address@hidden> wrote:
> On 20/02/2018 11:36, Stefan Hajnoczi wrote:
>> === Multi-CPU cluster support for GDB server in QEMU ===
>>
>> There are many examples in modern computing where multiple CPU
>> clusters are grouped together in a single SoC. This is common in the
>> ARM world especially. There are numerous examples such as ARM's
>> big.LITTLE implementations and Xilinx's 4xA53s and 2xR5s on the ZynqMP
>> SoC. The goal of this task is to add support to the GDB server to
>> allow users to debug across these clusters.
>>
>> This is another step towards single binary QEMU as well.
>>
>>  Detailed description of the project.
>>
>> Xilinx has an out of tree implementation that can be used as a
>> starting point. Work will need to be done on top of this to prepare it
>> for upstream submission and to ensure the implementation is more
>> generic.
>>
>> This will mostly involve extending GDB server to tell GDB about
>> different architectures and then allow the user to swap between them.
>>
>> The Xilinx implementation can be seen here:
>> https://github.com/Xilinx/qemu/blob/master/gdbstub.c
>> There has been some steps in preparing the work to go upstream, which
>> can be seen here:
>> https://github.com/Xilinx/qemu/tree/mainline/alistair/gdb
>
> I agree this is interesting.  Another related idea is to resume the
> multi-arch work that Peter Crosthwaite was working on before he left Xilinx.

That would be great! But it seems a little open ended for this type of
thing. Someone doing that will need to touch a large amount of QEMU
code.

Alistair

>
> Paolo
>