From: Nick Piggin <npiggin@xxxxxxx> Date: Wed, 30 Apr 2008 08:03:40 +0200 > Hardware walkers, I shouldn't worry too much about, except as a thought > exercise to realise that we have lockless readers. I think(?) alpha can > walk the linux ptes in hardware on TLB miss, but surely they will have > to do the requisite barriers in hardware too (otherwise things get > really messy) My understanding is that all Alpha implementations walk the page tables in PAL code. > Powerpc's find_linux_pte is one of the software walked lockless ones. > That's basically how I imagine hardware walkers essentially should operate. Sparc64 walks the page tables lockless in it's TLB hash table miss handling. MIPS does something similar. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
