linux-kernel - [PATCH v4 0/4] Improve dirty ring warning report

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Date:   Sat, 28 Jan 2023 07:51:46 +0800
From:   Gavin Shan <gshan@...hat.com>
To:     kvm@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kvmarm@...ts.linux.dev, kvmarm@...ts.cs.columbia.edu
Cc:     pbonzini@...hat.com, corbet@....net, maz@...nel.org,
        james.morse@....com, suzuki.poulose@....com,
        oliver.upton@...ux.dev, yuzenghui@...wei.com,
        catalin.marinas@....com, will@...nel.org, yuzhe@...china.com,
        gshan@...hat.com, seanjc@...gle.com, isaku.yamahata@...el.com,
        ricarkol@...gle.com, eric.auger@...hat.com, renzhengeek@...il.com,
        reijiw@...gle.com, shan.gavin@...il.com
Subject: [PATCH v4 0/4] Improve dirty ring warning report

It has been known case where no running VCPU context exists when the
vgic/its tables are saved. There are other two unknown cases where we
don't have the running VCPU context: (a) restore VGICv3 LPI pending
status. (b) restoring VGICv3 pending tables.

PATCH[1]     includes 'kvm_mmu.h' to 'vgic.h'
PATCH[2]     adds unified helper vgic_write_guest_lock()
PATCH[3 - 4] allows no-running-vcpu context for (a) and (b)

v3: https://lore.kernel.org/kvmarm/20230126235451.469087-1-gshan@redhat.com/T/#t
v2: https://lore.kernel.org/kvmarm/Y9Lg1ESUVJov0WpH@google.com/T/#t
v1: https://lore.kernel.org/kvmarm/20230116040405.260935-1-gshan@redhat.com/T/#t

Changelog
=========
v4:
  * s/vgic3/VGICv3                                             (Zenghui)
  * s/save_tables_in_progress/write_tables_in_progress         (Zenghui)
v3:
  * Pick Oliver's r-bs
  * Include 'kvm_mmu.h' to 'vgic.h'                            (Oliver)
v2:
  * Add unified helper vgic_write_guest_lock()                 (Oliver)
  * Dropped two patches to refactor mark_page_dirty_in_slot()  (Sean)

Gavin Shan (4):
  KVM: arm64: Include kvm_mmu.h from vgic.h
  KVM: arm64: Add helper vgic_write_guest_lock()
  KVM: arm64: Allow no running vcpu on restoring VGICv3 LPI pending
    status
  KVM: arm64: Allow no running vcpu on saving VGICv3 pending table

 Documentation/virt/kvm/api.rst        | 10 +++++++---
 arch/arm64/kvm/vgic/vgic-debug.c      |  1 -
 arch/arm64/kvm/vgic/vgic-init.c       |  1 -
 arch/arm64/kvm/vgic/vgic-its.c        | 14 +++++---------
 arch/arm64/kvm/vgic/vgic-kvm-device.c |  1 -
 arch/arm64/kvm/vgic/vgic-mmio-v3.c    |  1 -
 arch/arm64/kvm/vgic/vgic-v2.c         |  1 -
 arch/arm64/kvm/vgic/vgic-v3.c         |  5 ++---
 arch/arm64/kvm/vgic/vgic.h            | 14 ++++++++++++++
 include/kvm/arm_vgic.h                |  2 +-
 10 files changed, 29 insertions(+), 21 deletions(-)

-- 
2.23.0