From: Paul Mackerras <paulus@ozlabs.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@ozlabs.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org
Subject: Re: [PATCH v2 13/20] KVM: PPC: Book3S HV: Page table construction and page faults for radix guests
Date: Tue, 31 Jan 2017 08:05:03 +1100 [thread overview]
Message-ID: <20170130210503.GB26021@fergus.ozlabs.ibm.com> (raw)
In-Reply-To: <8737g0w9gu.fsf@concordia.ellerman.id.au>
On Tue, Jan 31, 2017 at 07:58:57AM +1100, Michael Ellerman wrote:
> Paul Mackerras <paulus@ozlabs.org> 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.
next prev parent reply other threads:[~2017-01-30 21:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-30 10:21 [PATCH v2 00/20] Support for radix guest and host on POWER9 Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 01/20] powerpc/64: Don't try to use radix MMU under a hypervisor Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 02/20] powerpc/pseries: Fixes for the "ibm, architecture-vec-5" options Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 03/20] powerpc/64: Enable use of radix MMU under hypervisor on POWER9 Paul Mackerras
2017-01-30 21:16 ` Michael Ellerman
2017-01-30 10:21 ` [PATCH v2 04/20] powerpc/64: More definitions for POWER9 Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 05/20] powerpc/64: Export pgtable_cache and pgtable_cache_add for KVM Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 06/20] powerpc/64: Make type of partition table flush depend on partition type Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 07/20] powerpc/64: Allow for relocation-on interrupts from guest to host Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 08/20] KVM: PPC: Book3S HV: Add userspace interfaces for POWER9 MMU Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 09/20] KVM: PPC: Book3S HV: Set process table for HPT guests on POWER9 Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 10/20] KVM: PPC: Book3S HV: Use ASDR " Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 11/20] KVM: PPC: Book3S HV: Add basic infrastructure for radix guests Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 12/20] KVM: PPC: Book3S HV: Modify guest entry/exit paths to handle " Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 13/20] KVM: PPC: Book3S HV: Page table construction and page faults for " Paul Mackerras
2017-01-30 20:58 ` Michael Ellerman
2017-01-30 21:05 ` Paul Mackerras [this message]
2017-01-30 10:21 ` [PATCH v2 14/20] KVM: PPC: Book3S HV: MMU notifier callbacks " Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 15/20] KVM: PPC: Book3S HV: Implement dirty page logging " Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 16/20] KVM: PPC: Book3S HV: Make HPT-specific hypercalls return error in radix mode Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 17/20] KVM: PPC: Book3S HV: Invalidate TLB on radix guest vcpu movement Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 18/20] KVM: PPC: Book3S HV: Allow guest exit path to have MMU on Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 19/20] KVM: PPC: Book3S HV: Invalidate ERAT on guest entry/exit for POWER9 DD1 Paul Mackerras
2017-01-30 10:21 ` [PATCH v2 20/20] KVM: PPC: Book3S HV: Enable radix guest support Paul Mackerras
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