Re: [Xen-devel] [PATCH] xen/arm64: Avoid sending SGI when kicking secondary cpus with spin_table

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Ian,

On 15/04/2015 17:21, Ian Campbell wrote:

> > Hmmm... I looked the wrong code in Linux :/.
> > The SGI is required for most of the platforms.
> Could you give a pointer to that code please.
The call to arch_send_wakeup_ipi_mask is done per-platform.
For the platforms supported by Xen:

arndale: mach-exynos/platsmp.c
omap5: mach-omap2/omap-smp.c

I wasn't able to find if RCAR (CC Iurii for it) and Vexpress really 
require an SGI to bring up secondary CPUs.
Regards,

--
Julien Grall

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