XEN with SMP on ARMv7 with virtualizations extensions

XEN with SMP on ARMv7 with virtualizations extensions

[Andrii Anisov]

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Guys,

Could you please clarify if SMP available for XEN on ARMv7 with
virtualizations extensions?
Browsing through stuff for Arndale I do see enabling secondary CPU on XEN
site and SMP enabling on dom0 kernel site. But I do not see SMP
infrastructure implementation on the XEN site.

Sincerely,
Andrii Anisov.

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Re: XEN with SMP on ARMv7 with virtualizations extensions

[Ian Campbell]

On Wed, 2013-04-10 at 15:58 +0100, Andrii Anisov wrote:
> Guys,
> 
> 
> Could you please clarify if SMP available for XEN on ARMv7 with
> virtualizations extensions?
> Browsing through stuff for Arndale I do see enabling secondary CPU on
> XEN site and SMP enabling on dom0 kernel site. But I do not see SMP
> infrastructure implementation on the XEN site.

Patches for both host and guest SMP have been posted to this list but
have not yet been applied (they are in my queue to review and apply
soon). That's the general support I don't know about Arndale
specifically, there may be additional platform specific work required.

Ian.

Re: XEN with SMP on ARMv7 with virtualizations extensions

[Julien Grall]

On 04/10/2013 03:58 PM, Andrii Anisov wrote:

> Guys,

Hello,

> Could you please clarify if SMP available for XEN on ARMv7 with
> virtualizations extensions?
> Browsing through stuff for Arndale I do see enabling secondary CPU on
> XEN site and SMP enabling on dom0 kernel site. But I do not see SMP
> infrastructure implementation on the XEN site.


The current specific branch for the Arndale board has support for the SMP.

The configuration file and the device tree already have SMP enabled.
You just need to clone and compile it :).

Cheers,

Julien

Re: XEN with SMP on ARMv7 with virtualizations extensions

[Andrii Anisov]

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Julien,

Do you mean SMP at XEN level?
Ok, I'll take a closer look at XEN for Arndale code.

Sincerely,
Andrii Anisov.

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Re: XEN with SMP on ARMv7 with virtualizations extensions

[Julien Grall]

On 04/11/2013 11:26 AM, Andrii Anisov wrote:

> Julien,
> 
> Do you mean SMP at XEN level?
> Ok, I'll take a closer look at XEN for Arndale code.


Yes. You can look at xen/arch/arm/smp.c and xen/arch/arm/smpboot.c.

Cheers,

Julien