Re: 2.6.23-rc8-mm2: problems on HP nx6325

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On Thursday, 27 September 2007 21:19, Sam Ravnborg wrote:
> On Thu, Sep 27, 2007 at 10:33:51AM -0700, Randy Dunlap wrote:
> > On Thu, 27 Sep 2007 18:53:46 +0200 Sam Ravnborg wrote:
> > 
> > > Hi Rafael.
> > > > 
> > > > Fix CPU hotplug breakage on HP nx6325 and similar boxes caused by a reference
> > > > to disable_apic_timer (labeled as __initdata) from the CPU initialization code.
> > > > 
> > > > Signed-off-by: Rafael J. Wysocki <[email protected]>
> > > > ---
> > > >  arch/x86_64/kernel/apic.c |    2 +-
> > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > > 
> > > > Index: linux-2.6.23-rc8-mm2/arch/x86_64/kernel/apic.c
> > > > ===================================================================
> > > > --- linux-2.6.23-rc8-mm2.orig/arch/x86_64/kernel/apic.c
> > > > +++ linux-2.6.23-rc8-mm2/arch/x86_64/kernel/apic.c
> > > > @@ -42,7 +42,7 @@
> > > >  
> > > >  int apic_verbosity;
> > > >  static int apic_calibrate_pmtmr __initdata;
> > > > -int disable_apic_timer __initdata;
> > > > +int disable_apic_timer __cpuinitdata;
> > > >  
> > > This is with your configuration a reference from a .text section
> > > to a .init.data section as I see it.
> > > 
> > > So this ought to have been flagged by the section mismatch
> > > checks in modpost.
> > > 
> > > I assume you did not see such warning??
> > 
> > I did:

But I didn't.  I'm not sure why.

> > WARNING: vmlinux.o(.text+0x7778): Section mismatch: reference to .init.data:disable_apic_timer (between 'identify_cpu' and 'IRQ0x20_interrupt')
> 
> Thanks. I look forward to the day I can make them errors so people
> cannot ignore them.
> That said a lot of individuals has done a very good job getting
> rid of section mismatch warnings all over the kernel.

Yes.

Greetings,
Rafael
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