kexec_fake_sal_rendez broken?

[nanhai.zou at intel.com (Zou, Nanhai)]

> -----Original Message-----
> From: Khalid Aziz [mailto:khalid_aziz at hp.com]
> Sent: 2006Äê10ÔÂ2ÈÕ 23:33
> To: Horms
> Cc: Zou, Nanhai; Fastboot mailing list
> Subject: Re: kexec_fake_sal_rendez broken?
> 
> On Mon, 2006-10-02 at 17:29 +0900, Horms wrote:
> > Hi Nanhai,
> >
> > I have been looking a little into kexec_fake_sal_rendez,
> > as I think that kexec for xen will need to use it as I don't
> > believe that any CPU hotplug infastructure is present there.
> >
> > Unfortunately, when compile linux without CPU hotplug support -
> > thus forcing the kexec_fake_sal_rendez method of shutting down CPUs
> > to be used - kexec no longer functions unless I set maxcpus=1 when
> > kexecing into the second kernel.
> >
> > Is this a problem that you are aware of?
> > Do you have any idea where I should poke around to fix it?
> >
> 
> That code has not caused problems on single cpu machine in the past. I
> will take a look.
> 


Hi Aziz,
	I think calling to the fake_rendz code need to be relocated to control page.
Otherwise there will be problem if kexec into a different kernel. New kernel may overlap to the area of fake_rendz code linked in first kernel.

Thanks
Zou Nan hai
> --
> Khalid
> 
> ====================================================================
> Khalid Aziz                       Open Source and Linux Organization
> (970)898-9214                                        Hewlett-Packard
> khalid.aziz at hp.com                                  Fort Collins, CO
> 
> "The Linux kernel is subject to relentless development"
>                                 - Alessandro Rubini