RE: [Xen-users] Attempt to apply xen-patches-2.6.34-4.tar.bz2 to 2.6.34.7 vanilla

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

You cannot dynamically take CPU on-line  or off-line. The step bellow will break
HOTPLUG_CPU anyway ( it's hack).
But , i believe that native Suse's 11.3 xenified 2.6.34.7-0.3-xen doesn't do that.

Boris.

--- On Sun, 10/10/10, Mike Viau <viaum@xxxxxxxxxxxxxxx> wrote:

From: Mike Viau <viaum@xxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Attempt to apply xen-patches-2.6.34-4.tar.bz2 to 2.6.34.7 vanilla
To: xen-users@xxxxxxxxxxxxxxxxxxx
Date: Sunday, October 10, 2010, 10:51 AM

> On Sun, 10 Oct 2010 07:35:55 -0700 <bderzhavets@xxxxxxxxx> wrote:
>
> Another way to disable this calls via include/linux/cpu.h , having
> CONFIG_HOTPLUG_CPU=y is to change arch/x86/Kconfig :-
>
> --- arch/x86/Kconfig.orig 2010-10-10 18:29:24.490068330 +0400
> +++ arch/x86/Kconfig 2010-10-10 17:50:22.383715068 +0400
> @@ -254,8 +254,8 @@
> def_bool X86_32
>
> config ARCH_CPU_PROBE_RELEASE
> - def_bool y
> - depends on HOTPLUG_CPU
> + def_bool n
> +# depends on HOTPLUG_CPU
>
> Boris

What are the reciprocation of turning off the ability to HOTPLUG_CPU? Is this feature ever used by XEN?

Thanks.

-M
                         
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