On Thu, Apr 27, 2006 at 07:09:17PM -0700, Chen, Kenneth W wrote: > --- ./arch/ia64/kernel/ivt.S.orig 2006-04-27 19:21:55.000000000 -0700 > +++ ./arch/ia64/kernel/ivt.S 2006-04-27 19:46:44.000000000 -0700 > @@ -142,16 +142,16 @@ ENTRY(vhpt_miss) > (p7) dep r17=r18,r17,3,(PAGE_SHIFT-6) // r17=pgd_offset for region[0-4] > cmp.eq p7,p6=0,r21 // unused address bits all zeroes? > #ifdef CONFIG_PGTABLE_4 > - shr.u r28=r22,PUD_SHIFT // shift pud index into position > + extr.u r28=r22,PUD_SHIFT,11 // get pud index How well does this work with different page sizes? > + > +#ifdef CONFIG_PGTABLE_4 > +int pgtbl3; > +static __init int setup_pgtbl3(char *s) > +{ > + pgtbl3 = 1; > + return 0; > +} > +early_param("pgtbl3", setup_pgtbl3); > +#endif What about taking out CONFIG_PGTABLE_*, having the default be 3, and have the boot option enable 4 levels? I haven't given this much though yet, but my first reaction was that would be the correct way to go. Thanks, Robin - : send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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