linux-kernel - [v2 PATCH 0/4] x86/kvm: Virtual suspend time injection support

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Date:   Fri,  6 Aug 2021 19:07:06 +0900
From:   Hikaru Nishida <hikalium@...omium.org>
To:     linux-kernel@...r.kernel.org, dme@....org, tglx@...utronix.de,
        mlevitsk@...hat.com
Cc:     suleiman@...gle.com, Hikaru Nishida <hikalium@...omium.org>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        John Stultz <john.stultz@...aro.org>,
        Jonathan Corbet <corbet@....net>,
        Juergen Gross <jgross@...e.com>,
        Lai Jiangshan <laijs@...ux.alibaba.com>,
        Mike Travis <mike.travis@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Sean Christopherson <seanjc@...gle.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Steve Wahl <steve.wahl@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>, kvm@...r.kernel.org,
        linux-doc@...r.kernel.org, x86@...nel.org
Subject: [v2 PATCH 0/4] x86/kvm: Virtual suspend time injection support


Hi,

This patch series adds virtual suspend time injection support to KVM.
(It is an updated version of the following series.)
https://lore.kernel.org/kvm/20210426090644.2218834-1-hikalium@chromium.org/

Changes to v1:

- Using IRQ instead of polling to detect the host's suspension.
- Removed unused arg "updated" from kvm_write_suspend_time()
- Improved comments and commit messages.

Please take a look again.

Thanks,

Hikaru Nishida



Hikaru Nishida (4):
  x86/kvm: Reserve KVM_FEATURE_HOST_SUSPEND_TIME and
    MSR_KVM_HOST_SUSPEND_TIME
  x86/kvm: Add definitions for virtual suspend time injection
  x86/kvm: Add host side support for virtual suspend time injection
  x86/kvm: Add guest side support for virtual suspend time injection

 Documentation/virt/kvm/cpuid.rst     |   3 +
 Documentation/virt/kvm/msr.rst       |  30 ++++++++
 arch/x86/Kconfig                     |  13 ++++
 arch/x86/include/asm/idtentry.h      |   4 +
 arch/x86/include/asm/irq_vectors.h   |   7 +-
 arch/x86/include/asm/kvm_host.h      |   5 ++
 arch/x86/include/asm/kvm_para.h      |   9 +++
 arch/x86/include/uapi/asm/kvm_para.h |   6 ++
 arch/x86/kernel/kvmclock.c           |  40 ++++++++++
 arch/x86/kvm/Kconfig                 |  13 ++++
 arch/x86/kvm/cpuid.c                 |   4 +
 arch/x86/kvm/x86.c                   | 109 ++++++++++++++++++++++++++-
 include/linux/kvm_host.h             |   8 ++
 include/linux/timekeeper_internal.h  |   4 +
 kernel/time/timekeeping.c            |  37 +++++++++
 15 files changed, 290 insertions(+), 2 deletions(-)

-- 
2.32.0.605.g8dce9f2422-goog