Re: [Xen-devel] [PATCH 4/4] amd/seattle: Initial revision of AMD Seattle support

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Wed, 1 Oct 2014, Suravee Suthikulanit wrote:
> On 10/1/2014 5:10 AM, Stefano Stabellini wrote:
> > On Wed, 1 Oct 2014, suravee.suthikulpanit@xxxxxxx wrote:
> > > From: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
> > > 
> > > This patch add inital (minimal) platform support for AMD Seattle,
> > > which mainly just define the matching ID, and specify system_off,
> > > and sytem_reset mechanism.
> > > 
> > > Initially, the firmware only support a subset of PSCI-0.2 functions,
> > > system-off and sytem-reset. The boot protocol is still using spin-table.
> > 
> > In that case, aren't you missing
> > 
> > cpu_up = cpu_up_send_sgi
> > 
> > ?
> > 
> > Or are you just going to assume that the firmware is going to be updated
> > to support full PSCI 0.2?
> 
> I thought the platform_cpu_up() is only called from the
> arch/arm/arm32/smpboot.c. Is it also used for ARM64?

You are right, on arm64 we just look at enable-method



> And yes, the firmware will support full PSCI-0.2 eventually.
> 
> Thanks,
> 
> Suravee
> 
>

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