Re: preempt bug in set_pmd_pfn?

[Jeremy Fitzhardinge]

Andi Kleen wrote:
> On Wednesday 05 March 2008 01:07:11 Jeremy Fitzhardinge wrote:
>   
> > Andi Kleen wrote:
> >     
> > > > Won't this leave a stale tlb on the old processor?
> > > >     
> > > >         
> > > __set_fixmap should be only used in early boot, so it's always
> > > on CPU 0
> > >       
> > vdso32-setup.c:map_compat_vdso() uses it to create the compat vdso 
> > mapping, which typically happens on the first execve(),
> >     
>
> First execve for 32bit binaries?
>   

Yes, 32-bit kernel.

> Anyways __set_fixmap is __init and at the first  execve (unless you have initramfs) 
> init.text should be already freed.

No, its not __init.  If it were I don't think there would have been much 
booting going on for the last few months.

   J
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