On Tue, Jan 31, 2017 at 07:58:57AM +1100, Michael Ellerman wrote:
> Paul Mackerras <paulus@xxxxxxxxxx> writes:
>
> > This adds the code to construct the second-level ("partition-scoped" in
> > architecturese) page tables for guests using the radix MMU. Apart from
> > the PGD level, which is allocated when the guest is created, the rest
> > of the tree is all constructed in response to hypervisor page faults.
> >
> > As well as hypervisor page faults for missing pages, we also get faults
> > for reference/change (RC) bits needing to be set, as well as various
> > other error conditions. For now, we only set the R or C bit in the
> > guest page table if the same bit is set in the host PTE for the
> > backing page.
> >
> > This code can take advantage of the guest being backed with either
> > transparent or ordinary 2MB huge pages, and insert 2MB page entries
> > into the guest page tables. There is no support for 1GB huge pages
> > yet.
> > ---
> > arch/powerpc/include/asm/kvm_book3s.h | 8 +
> > arch/powerpc/kvm/book3s.c | 1 +
> > arch/powerpc/kvm/book3s_64_mmu_hv.c | 7 +-
> > arch/powerpc/kvm/book3s_64_mmu_radix.c | 385 +++++++++++++++++++++++++++++++++
> > arch/powerpc/kvm/book3s_hv.c | 17 +-
> > 5 files changed, 415 insertions(+), 3 deletions(-)
>
> You didn't sign-off this patch. I assume that's just an accident and
> will add it?
Oops, yes, just an oversight. I'll add it.
Paul.
