On Sat, 18 Jul 1998 04:42:39 -0400 (EDT) 
 Ken Raeburn <raeburn@raeburn.org> wrote:

 > (gdb) fr 4
 > #4  0xf01ed985 in pmap_enter (pmap=0xf0969a00, va=4898816, pa=38051840, 
 >     prot=7, wired=0) at ../../../../arch/i386/i386/pmap.c:1251
 > 1251                    panic("ptdi %x", pmap->pm_pdir[PTDPTDI]);
 > (gdb) list
 > 1246            /*
 > 1247             * Page Directory table entry not valid, we need a new PT page
 > 1248             */
 > 1249            pte = pmap_pte(pmap, va);
 > 1250            if (!pte)
 > 1251                    panic("ptdi %x", pmap->pm_pdir[PTDPTDI]);
 > 1252
 > 1253    #ifdef DEBUG
 > 1254            if (pmapdebug & PDB_ENTER)
 > 1255                    printf("enter: pte %p, *pte %x ", pte, *pte);
 > (gdb) p/x va
 > $10 = 0x4ac000
 > (gdb)

This bug is known, and is fixed in -current if you use UVM + PMAP_NEW.

It is an i386-specific bug.

If you're satisfied with this, I'll go ahead and close the PR.

Jason R. Thorpe                                       thorpej@nas.nasa.gov
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