From: Paul Mackerras <paulus@ozlabs.org>
To: linuxppc-dev@ozlabs.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org
Subject: [PATCH 00/18] Support for radix guest and host on POWER9
Date: Thu, 12 Jan 2017 20:07:08 +1100 [thread overview]
Message-ID: <1484212046-29591-1-git-send-email-paulus@ozlabs.org> (raw)
The primary purpose of this patch series is to make it possible to run
a guest on POWER9 using the radix MMU under a KVM host that also uses
the radix MMU. To do this, the guest needs to say that it supports
radix in the ibm,client-architecture-support vector, and if the host
agrees, the guest then needs to call the new H_REGISTER_PROCESS_TABLE
hypercall to tell the hypervisor where its process table is (the
process table contains pointers to the radix trees for each process).
On the host side, we add new KVM interfaces for userspace (e.g. QEMU)
to use to know whether the host supports radix guest, HPT guests, or
both, and for userspace to use to implement H_REGISTER_PROCESS_TABLE.
There are two new capabilities and two new ioctls. These are added in
patch 9/18.
The host then needs to be able to construct the second-level radix
tree ("partition-scoped" in architecturese) which maps guest real
addresses to host real addresses. We add PTEs to this table on
hypervisor page faults and remove them in response to MMU notifier
callbacks.
The patch series also includes some improvements for HPT guests
running under a HPT host.
Currently, the MMU type of the guest (radix or HPT) must be the same
as the host. That is, if the host is booted in radix mode, it can
only run radix guests. If the host is booted in HPT mode (e.g. by
putting "disable_radix" on the kernel command line), it can only run
HPT guests.
The patch series is against 4.10-rc3.
Paul.
Documentation/virtual/kvm/api.txt | 83 ++++
arch/powerpc/include/asm/book3s/64/mmu.h | 14 +-
arch/powerpc/include/asm/hvcall.h | 11 +
arch/powerpc/include/asm/kvm_book3s.h | 26 +-
arch/powerpc/include/asm/kvm_book3s_64.h | 6 +
arch/powerpc/include/asm/kvm_host.h | 4 +
arch/powerpc/include/asm/kvm_ppc.h | 2 +
arch/powerpc/include/asm/prom.h | 17 +-
arch/powerpc/include/asm/reg.h | 4 +
arch/powerpc/include/uapi/asm/kvm.h | 20 +
arch/powerpc/kernel/asm-offsets.c | 2 +
arch/powerpc/kernel/prom_init.c | 18 +-
arch/powerpc/kvm/Makefile | 3 +-
arch/powerpc/kvm/book3s.c | 1 +
arch/powerpc/kvm/book3s_64_mmu_hv.c | 110 +++--
arch/powerpc/kvm/book3s_64_mmu_radix.c | 716 ++++++++++++++++++++++++++++++
arch/powerpc/kvm/book3s_hv.c | 168 +++++--
arch/powerpc/kvm/book3s_hv_rm_mmu.c | 14 +
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 66 ++-
arch/powerpc/kvm/powerpc.c | 32 ++
arch/powerpc/mm/init-common.c | 3 +-
arch/powerpc/mm/init_64.c | 35 ++
arch/powerpc/mm/pgtable-radix.c | 2 +
arch/powerpc/mm/pgtable_64.c | 16 +-
arch/powerpc/platforms/Kconfig.cputype | 7 +-
arch/powerpc/platforms/pseries/firmware.c | 2 +-
arch/powerpc/platforms/pseries/lpar.c | 29 ++
include/uapi/linux/kvm.h | 6 +
28 files changed, 1318 insertions(+), 99 deletions(-)
next reply other threads:[~2017-01-12 9:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-12 9:07 Paul Mackerras [this message]
2017-01-12 9:07 ` [PATCH 01/18] powerpc/64: Don't try to use radix MMU under a hypervisor Paul Mackerras
2017-01-12 16:48 ` Balbir Singh
2017-01-12 9:07 ` [PATCH 02/18] powerpc/64: Fixes for the ibm, client-architecture-support options Paul Mackerras
2017-01-12 9:07 ` [PATCH 03/18] powerpc/64: Always enable radix support for 64-bit Book 3S kernels Paul Mackerras
2017-01-12 9:07 ` [PATCH 04/18] powerpc/64: Enable use of radix MMU under hypervisor on POWER9 Paul Mackerras
2017-01-22 2:17 ` kbuild test robot
2017-01-12 9:07 ` [PATCH 05/18] powerpc/64: More definitions for POWER9 Paul Mackerras
2017-01-12 9:07 ` [PATCH 06/18] powerpc/64: Export pgtable_cache and pgtable_cache_add for KVM Paul Mackerras
2017-01-12 9:07 ` [PATCH 07/18] powerpc/64: Make type of partition table flush depend on partition type Paul Mackerras
2017-01-12 9:07 ` [PATCH 08/18] KVM: PPC: Book3S HV: Don't try to signal cpu -1 Paul Mackerras
2017-01-12 9:07 ` [PATCH 09/18] KVM: PPC: Book3S HV: Add userspace interfaces for POWER9 MMU Paul Mackerras
2017-01-12 9:07 ` [PATCH 10/18] KVM: PPC: Book3S HV: Set process table for HPT guests on POWER9 Paul Mackerras
2017-01-23 2:39 ` Suraj Jitindar Singh
2017-01-23 4:37 ` Paul Mackerras
2017-01-12 9:07 ` [PATCH 11/18] KVM: PPC: Book3S HV: Add basic infrastructure for radix guests Paul Mackerras
2017-01-12 9:07 ` [PATCH 12/18] KVM: PPC: Book3S HV: Modify guest entry/exit paths to handle " Paul Mackerras
2017-01-12 9:07 ` [PATCH 13/18] KVM: PPC: Book3S HV: Page table construction and page faults for " Paul Mackerras
2017-01-23 3:17 ` Suraj Jitindar Singh
2017-01-23 4:38 ` Paul Mackerras
2017-01-12 9:07 ` [PATCH 14/18] KVM: PPC: Book3S HV: MMU notifier callbacks " Paul Mackerras
2017-01-23 3:21 ` Suraj Jitindar Singh
2017-01-12 9:07 ` [PATCH 15/18] KVM: PPC: Book3S HV: Implement dirty page logging " Paul Mackerras
2017-01-12 9:07 ` [PATCH 16/18] KVM: PPC: Book3S HV: Make HPT-specific hypercalls return error in radix mode Paul Mackerras
2017-01-12 9:07 ` [PATCH 17/18] KVM: PPC: Book3S HV: Enable radix guest support Paul Mackerras
2017-01-23 3:31 ` Suraj Jitindar Singh
2017-01-12 9:07 ` [PATCH 18/18] KVM: PPC: Book3S HV: Use ASDR for HPT guests on POWER9 Paul Mackerras
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