> > Index: linux-2.6.23-rc2-mm2/arch/x86_64/mm/pageattr.c
> > ===================================================================
> > --- linux-2.6.23-rc2-mm2.orig/arch/x86_64/mm/pageattr.c 2007-08-17
> > 12:50:25.000000000 +0800 +++
> > linux-2.6.23-rc2-mm2/arch/x86_64/mm/pageattr.c 2007-08-17
> > 12:50:48.000000000 +0800 @@ -147,6 +147,7 @@
> > split = split_large_page(address, prot, ref_prot2);
> > if (!split)
> > return -ENOMEM;
> > + pgprot_val(ref_prot2) &= ~_PAGE_NX;
> > set_pte(kpte, mk_pte(split, ref_prot2));
> > kpte_page = split;
> > }
>
> What happened with this? Still valid?
The bug is probably latent there, but I don't think it can affect anything
in the kernel because nothing in the kernel should change NX status
as far as I know.
Where did you see it?
Anyways I would prefer to only clear the PMD NX when NX status actually
changes on the PTE.Can you do that change?
Anyways; it's really not very important.
-Andi
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