On Thu, Sep 21, 2006 at 11:09:57AM +0800, Zou, Nanhai wrote:
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of Horms
> > Sent: 2006年9月20日 10:43
> > To: Zou, Nanhai
> > Cc: Luck, Tony; Linux-IA64; fastboot
> > Subject: Kexec/Kdump: kdump_disable_iosapic needs CONFIG_IOSAPIC
> > 
> > kdump_disable_iosapic() doesn't exist without CONFIG_IOSAPIC,
> > calling it needs to be gaurded by a corresponding #ifdef
> > 
> > This patch has been updated for IA64 Kexec/Kdump patch for 2.6.18-rc6,
> > http://permalink.gmane.org/gmane.linux.ports.ia64/14988
> > 
> > Signed-Off-By: Simon Horman <[EMAIL PROTECTED]>
> > 
> > diff --git a/arch/ia64/kernel/crash.c b/arch/ia64/kernel/crash.c
> > index ccc898c..b3f4915 100644
> > --- a/arch/ia64/kernel/crash.c
> > +++ b/arch/ia64/kernel/crash.c
> > @@ -121,7 +121,9 @@ machine_crash_shutdown(struct pt_regs *p
> >      * In practice this means shooting down the other cpus in
> >      * an SMP system.
> >      */
> > +#ifdef CONFIG_IOSAPIC
> >     kexec_disable_iosapic();
> > +#endif
> >  #ifdef CONFIG_SMP
> >     kdump_smp_send_stop();
> >     if (kdump_wait_cpu_freeze() && kdump_on_init)   {
> > @@ -135,7 +137,9 @@ static void
> >  machine_kdump_on_init(void)
> >  {
> >     local_irq_disable();
> > +#ifdef CONFIG_IOSAPIC
> >     kexec_disable_iosapic();
> > +#endif
> >     machine_kexec(ia64_kimage);
> >  }
> > 
> > 
>  CONFIG_IOSAPIC is only disabled when configure kernel for simulator. 
>  So I think we do not need this #ifdef unless we are using kexec/kdump on a 
> simulator.

I'm not sure that I understand your argument.

If you are compiling for the simulator, and you have CONFIG_KEXEC enabled,
then the build will fail. I think that is a problem. Instead of
my patch, should CONFIG_KEXEC depend on CONFIG_IOSAPIC?

-- 
Horms
  H: http://www.vergenet.net/~horms/
  W: http://www.valinux.co.jp/en/

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