Re: [PATCH] xen: Make sure log-dirty is turned off before trying to dismantle it

[George Dunlap <george.dunlap@citrix.com>]

On Thu, 2012-03-08 at 12:17 +0000, Tim Deegan wrote:
> At 17:58 +0000 on 07 Mar (1331143125), George Dunlap wrote:
> > diff --git a/xen/arch/x86/mm/paging.c b/xen/arch/x86/mm/paging.c
> > --- a/xen/arch/x86/mm/paging.c
> > +++ b/xen/arch/x86/mm/paging.c
> > @@ -722,6 +722,10 @@ int paging_domctl(struct domain *d, xen_
> >  /* Call when destroying a domain */
> >  void paging_teardown(struct domain *d)
> >  {
> > +    /* Make sure log-dirty is turned off before trying to dismantle it. 
> > +     * Needs to be done here becuse it's covered by the hap/shadow lock */
> > +    d->arch.paging.log_dirty.disable_log_dirty(d);
> > +
> >      if ( hap_enabled(d) )
> >          hap_teardown(d);
> >      else
> > 
> 
> This isn't needed upstream because the spinlock confusion that it's
> papering over has been properly fixed (by eliminating the log-dirty
> lock).

Yes; I'm afraid I didn't read the ticket referenced here very well
either.  Sorry about that -- it just looked so obvious. :-)  

It looks like Keir has already added it -- do you want to revert it?

 -George