On 19/07/2015 14:11, Benjamin Herrenschmidt wrote: > Ok, I assumed incorrectly that 8 was too much based on your changeset > comment: > > << > At 8k per TLB (for 64-bit host or target), 8 or more modes > make the TLBs bigger than 64k, and some RISC TCG backends do > not like that. On the affected hosts, cut the TLB size in > half---there is still a measurable speedup on PPC with the > next patch. > >> > > IE, you wrote "8 or more".
Indeed... at 8 the TLBs are exactly 64k. Paolo > I can easily fold back guest vs. HV into BookE, though we don't > generally support BookE HV mode anyway in TCG so there's no big hurry in > doing so (we need to add support for the shadow SPRs and a bunch of > other things for that to work).
