On Sat, 2016-02-20 at 20:10 +0530, Aneesh Kumar K.V wrote: > Paul Mackerras <pau...@samba.org> writes: > > > This patch series modifies the Linux PTE format used on 64-bit Book3S > > processors (i.e. POWER server processors) to make the bits line up > > with the PTE format used in the radix trees defined in PowerISA v3.0. > > This will reduce the amount of further change required to make a > > kernel that can run with either a radix MMU or a hashed page table > > (HPT) MMU. > > > > This also changes the upper levels of the tree to use real addresses > > rather than kernel virtual addresses - that is, we no longer have the > > 0xc000... at the top of each PGD/PUD/PMD entry. I made this change > > for all 64-bit machines, both embedded and server. > > > > The patch series is against v4.5-rc4 plus Aneesh's "powerpc/mm/hash: > > Clear the invalid slot information correctly" patch. > > > > I have compiled this for all the defconfigs in the tree, without > > error. I have tested this, with the fixes branch of the powerpc tree > > merged in, both running bare-metal on a POWER8 and in a KVM guest on > > that POWER8 system. In the guest I tested both 4k and 64k configs, > > with THP enabled; in the host I tested with 64k page size and THP > > enabled. All these tests ran fine, including running a KVM guest on > > the bare-metal system. So far I have done kernel compiles in a loop > > as the test, but I plan to run LTP and possibly some other tests. > > > > Comments welcome. > > I was expecting some complex changes in asm and other part of the code. That > is one of the reason I was holding of a series like this till I get the > radix merged.
Yeah, but you actually rewrote most/all of that code in C as part of your earlier refactoring :) > Now how do we want to go with this series ?. If we are taking this > series before the books3 hash linux abstraction series, I will have to > redo that series now on top of this. I'd prefer to merge this first. I know you'll have to redo your series, but hopefully some of your series can just go away, because we don't need to abstract the PTE bits anymore. cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
