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Re: [Qemu-discuss] SMP support on SPARC/Leon3

From: Fabien Chouteau
Subject: Re: [Qemu-discuss] SMP support on SPARC/Leon3
Date: Tue, 02 Jun 2015 10:42:33 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0

On 05/18/2015 11:25 PM, Ezequiel AlfĂ­e wrote:
> Hi everyone,
> I'm quite new to qemu internals,
> I'd like to contribute to the project by adding SMP support for the
> LEON3 machine.
> Do you have any thoughts or directions on what would have to be done?
> I'm trying to compare a sun4m machine with smp support (like
> SPARCstation 10) to have a general idea of this.

That's great!

The good news is that the synchronization instruction like Test and Set
(ldstub) should already be implemented (to be verified).

I think most of the work will be in the IRQMP to handle CPU start, CPU
status, IRQ broadcasting...

I'm not familiar with CPU start/stop but I'm sure you will find examples
in the code.

Don't hesitate to ask questions.


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