From: isaku.yamahata@intel.com
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>
Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com,
Kai Huang <kai.huang@intel.com>, Chao Gao <chao.gao@intel.com>,
Atish Patra <atishp@atishpatra.org>,
Shaokun Zhang <zhangshaokun@hisilicon.com>,
Qi Liu <liuqi115@huawei.com>, John Garry <john.garry@huawei.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Huang Ying <ying.huang@intel.com>,
Huacai Chen <chenhuacai@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Borislav Petkov <bp@alien8.de>
Subject: [PATCH v3 00/22] KVM: hardware enable/disable reorganize
Date: Thu, 1 Sep 2022 19:17:35 -0700 [thread overview]
Message-ID: <cover.1662084396.git.isaku.yamahata@intel.com> (raw)
From: Isaku Yamahata <isaku.yamahata@intel.com>
Changes from v2:
- Replace the first patch("KVM: x86: Drop kvm_user_return_msr_cpu_online()")
with Sean's implementation
- Included all patches of "Improve KVM's interaction with CPU hotplug" [2]
Until v2, Tried to cherry-pick the least patches of it. It turned out that
all the patches are desirable.
This patch series is to implement the suggestion by Sean Christopherson [1]
to reorganize enable/disable cpu virtualization feature by replacing
the arch-generic current enable/disable logic with PM related hooks. And
convert kvm/x86 to use new hooks.
- Untable x86 hardware enable logic, snapshot MSRs for user return notifier,
enabling cpu virtualization on cpu online and platform resume. and real
enabling of CPU virtualization feature
- Introduce hooks related to PM.
- Convert kvm/x86 code to user those hooks.
- Split out hardware enabling/disabling logic into a separate file. Compile
it for non-x86 code. Once conversion of other KVM archs is done, this file
can be dropped.
- Delete cpus_hardware_enabled. 17/18 and 18/18
[1] https://lore.kernel.org/kvm/YvU+6fdkHaqQiKxp@google.com/
[2] https://lore.kernel.org/all/20220216031528.92558-1-chao.gao@intel.com/
Changes from v1:
- Add a patch "KVM: Rename and move CPUHP_AP_KVM_STARTING to ONLINE section"
to make online/offline callback to run thread context to use mutex instead
of spin lock
- fixes pointed by Chao Gao
Chao Gao (4):
KVM: x86: Move check_processor_compatibility from init ops to runtime
ops
Partially revert "KVM: Pass kvm_init()'s opaque param to additional
arch funcs"
KVM: Rename and move CPUHP_AP_KVM_STARTING to ONLINE section
KVM: Do compatibility checks on hotplugged CPUs
Isaku Yamahata (15):
KVM: x86: Use this_cpu_ptr() instead of
per_cpu_ptr(smp_processor_id())
KVM: Do processor compatibility check on resume
KVM: Drop kvm_count_lock and instead protect kvm_usage_count with
kvm_lock
KVM: Add arch hooks for PM events with empty stub
KVM: x86: Move TSC fixup logic to KVM arch resume callback
KVM: Add arch hook when VM is added/deleted
KVM: Move out KVM arch PM hooks and hardware enable/disable logic
KVM: kvm_arch.c: Remove _nolock post fix
KVM: kvm_arch.c: Remove a global variable, hardware_enable_failed
KVM: x86: Duplicate arch callbacks related to pm events
KVM: Eliminate kvm_arch_post_init_vm()
KVM: x86: Delete kvm_arch_hardware_enable/disable()
KVM: Add config to not compile kvm_arch.c
RFC: KVM: x86: Remove cpus_hardware_enabled and related sanity check
RFC: KVM: Remove cpus_hardware_enabled and related sanity check
Marc Zyngier (1):
KVM: arm64: Simplify the CPUHP logic
Sean Christopherson (2):
KVM: x86: Drop kvm_user_return_msr_cpu_online()
KVM: Provide more information in kernel log if hardware enabling fails
Documentation/virt/kvm/locking.rst | 14 +-
arch/arm64/kvm/arch_timer.c | 27 ++--
arch/arm64/kvm/arm.c | 6 +-
arch/arm64/kvm/vgic/vgic-init.c | 19 +--
arch/mips/kvm/mips.c | 2 +-
arch/powerpc/kvm/powerpc.c | 2 +-
arch/riscv/kvm/main.c | 2 +-
arch/s390/kvm/kvm-s390.c | 2 +-
arch/x86/include/asm/kvm-x86-ops.h | 1 +
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/kvm/Kconfig | 1 +
arch/x86/kvm/svm/svm.c | 4 +-
arch/x86/kvm/vmx/vmx.c | 24 ++--
arch/x86/kvm/x86.c | 177 ++++++++++++++++++++-----
include/kvm/arm_arch_timer.h | 4 +
include/kvm/arm_vgic.h | 4 +
include/linux/cpuhotplug.h | 5 +-
include/linux/kvm_host.h | 14 +-
virt/kvm/Kconfig | 3 +
virt/kvm/Makefile.kvm | 3 +
virt/kvm/kvm_arch.c | 127 ++++++++++++++++++
virt/kvm/kvm_main.c | 203 ++++++++++-------------------
22 files changed, 413 insertions(+), 233 deletions(-)
create mode 100644 virt/kvm/kvm_arch.c
base-commit: b90cb1053190353cc30f0fef0ef1f378ccc063c5
--
2.25.1
next reply other threads:[~2022-09-02 2:18 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 2:17 isaku.yamahata [this message]
2022-09-02 2:17 ` [PATCH v3 01/22] KVM: x86: Drop kvm_user_return_msr_cpu_online() isaku.yamahata
2022-09-05 1:59 ` Chao Gao
2022-09-05 5:30 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 02/22] KVM: x86: Use this_cpu_ptr() instead of per_cpu_ptr(smp_processor_id()) isaku.yamahata
2022-09-05 5:35 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 03/22] KVM: x86: Move check_processor_compatibility from init ops to runtime ops isaku.yamahata
2022-09-05 5:42 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 04/22] Partially revert "KVM: Pass kvm_init()'s opaque param to additional arch funcs" isaku.yamahata
2022-09-05 5:48 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 05/22] KVM: Provide more information in kernel log if hardware enabling fails isaku.yamahata
2022-09-05 5:56 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 06/22] KVM: arm64: Simplify the CPUHP logic isaku.yamahata
2022-09-05 7:05 ` Yuan Yao
2022-09-05 9:29 ` Marc Zyngier
2022-09-05 12:39 ` Marc Zyngier
2022-09-07 15:12 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 07/22] KVM: Rename and move CPUHP_AP_KVM_STARTING to ONLINE section isaku.yamahata
2022-09-05 7:49 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 08/22] KVM: Do compatibility checks on hotplugged CPUs isaku.yamahata
2022-09-06 1:25 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 09/22] KVM: Do processor compatibility check on resume isaku.yamahata
2022-09-05 8:40 ` Yuan Yao
2022-09-05 9:27 ` Yuan Yao
2022-09-08 18:21 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 10/22] KVM: Drop kvm_count_lock and instead protect kvm_usage_count with kvm_lock isaku.yamahata
2022-09-06 2:46 ` Yuan Yao
2022-09-06 6:32 ` Marc Zyngier
2022-09-06 21:44 ` Isaku Yamahata
2022-09-08 18:24 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 11/22] KVM: Add arch hooks for PM events with empty stub isaku.yamahata
2022-09-06 6:25 ` Yuan Yao
2022-09-08 19:11 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 12/22] KVM: x86: Move TSC fixup logic to KVM arch resume callback isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 13/22] KVM: Add arch hook when VM is added/deleted isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 14/22] KVM: Move out KVM arch PM hooks and hardware enable/disable logic isaku.yamahata
2022-09-06 7:43 ` Yuan Yao
2022-09-08 19:15 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 15/22] KVM: kvm_arch.c: Remove _nolock post fix isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 16/22] KVM: kvm_arch.c: Remove a global variable, hardware_enable_failed isaku.yamahata
2022-09-07 5:56 ` Yuan Yao
2022-09-08 22:51 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 17/22] KVM: x86: Duplicate arch callbacks related to pm events isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 18/22] KVM: Eliminate kvm_arch_post_init_vm() isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 19/22] KVM: x86: Delete kvm_arch_hardware_enable/disable() isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 20/22] KVM: Add config to not compile kvm_arch.c isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 21/22] RFC: KVM: x86: Remove cpus_hardware_enabled and related sanity check isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 22/22] RFC: KVM: " isaku.yamahata
2022-09-05 15:38 ` [PATCH v3 00/22] KVM: hardware enable/disable reorganize Marc Zyngier
2022-09-06 22:25 ` Isaku Yamahata
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