From: Gavin Shan <gshan@redhat.com>
To: kvmarm@lists.linux.dev
Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
peterx@redhat.com, catalin.marinas@arm.com, bgardon@google.com,
shuah@kernel.org, andrew.jones@linux.dev, will@kernel.org,
dmatlack@google.com, pbonzini@redhat.com, zhenyzha@redhat.com,
james.morse@arm.com, suzuki.poulose@arm.com,
alexandru.elisei@arm.com, oliver.upton@linux.dev,
seanjc@google.com, shan.gavin@gmail.com
Subject: [PATCH v5 0/7] KVM: arm64: Enable ring-based dirty memory tracking
Date: Wed, 5 Oct 2022 08:41:47 +0800 [thread overview]
Message-ID: <20221005004154.83502-1-gshan@redhat.com> (raw)
This series enables the ring-based dirty memory tracking for ARM64.
The feature has been available and enabled on x86 for a while. It
is beneficial when the number of dirty pages is small in a checkpointing
system or live migration scenario. More details can be found from
fb04a1eddb1a ("KVM: X86: Implement ring-based dirty memory tracking").
This series is applied on top of Marc's v2 series [0], fixing dirty-ring
ordering issue. This series is going to land on v6.1.rc0 pretty soon.
[0] https://lore.kernel.org/kvmarm/20220926145120.27974-1-maz@kernel.org
v4: https://lore.kernel.org/kvmarm/20220927005439.21130-1-gshan@redhat.com/
v3: https://lore.kernel.org/r/20220922003214.276736-1-gshan@redhat.com
v2: https://lore.kernel.org/lkml/YyiV%2Fl7O23aw5aaO@xz-m1.local/T/
v1: https://lore.kernel.org/lkml/20220819005601.198436-1-gshan@redhat.com
Testing
=======
(1) kvm/selftests/dirty_log_test
(2) Live migration by QEMU
Changelog
=========
v5:
* Drop empty stub kvm_dirty_ring_check_request() (Marc/Peter)
* Add PATCH[v5 3/7] to allow using bitmap, indicated by
KVM_CAP_DIRTY_LOG_RING_ALLOW_BITMAP (Marc/Peter)
v4:
* Commit log improvement (Marc)
* Add helper kvm_dirty_ring_check_request() (Marc)
* Drop ifdef for kvm_cpu_dirty_log_size() (Marc)
v3:
* Check KVM_REQ_RING_SOFT_RULL inside kvm_request_pending() (Peter)
* Move declaration of kvm_cpu_dirty_log_size() (test-robot)
v2:
* Introduce KVM_REQ_RING_SOFT_FULL (Marc)
* Changelog improvement (Marc)
* Fix dirty_log_test without knowing host page size (Drew)
Gavin Shan (7):
KVM: x86: Introduce KVM_REQ_RING_SOFT_FULL
KVM: x86: Move declaration of kvm_cpu_dirty_log_size() to
kvm_dirty_ring.h
KVM: x86: Allow to use bitmap in ring-based dirty page tracking
KVM: arm64: Enable ring-based dirty memory tracking
KVM: selftests: Use host page size to map ring buffer in
dirty_log_test
KVM: selftests: Clear dirty ring states between two modes in
dirty_log_test
KVM: selftests: Automate choosing dirty ring size in dirty_log_test
Documentation/virt/kvm/api.rst | 19 ++++---
arch/arm64/include/uapi/asm/kvm.h | 1 +
arch/arm64/kvm/Kconfig | 1 +
arch/arm64/kvm/arm.c | 3 ++
arch/x86/include/asm/kvm_host.h | 2 -
arch/x86/kvm/x86.c | 15 +++---
include/linux/kvm_dirty_ring.h | 9 ++--
include/linux/kvm_host.h | 1 +
include/uapi/linux/kvm.h | 1 +
tools/testing/selftests/kvm/dirty_log_test.c | 53 ++++++++++++++------
tools/testing/selftests/kvm/lib/kvm_util.c | 2 +-
virt/kvm/dirty_ring.c | 19 ++++++-
virt/kvm/kvm_main.c | 24 ++++-----
13 files changed, 92 insertions(+), 58 deletions(-)
--
2.23.0
next reply other threads:[~2022-10-05 0:43 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-05 0:41 Gavin Shan [this message]
2022-10-05 0:41 ` [PATCH v5 1/7] KVM: x86: Introduce KVM_REQ_RING_SOFT_FULL Gavin Shan
2022-10-05 0:41 ` [PATCH v5 2/7] KVM: x86: Move declaration of kvm_cpu_dirty_log_size() to kvm_dirty_ring.h Gavin Shan
2022-10-05 0:41 ` [PATCH v5 3/7] KVM: x86: Allow to use bitmap in ring-based dirty page tracking Gavin Shan
2022-10-06 20:28 ` Peter Xu
2022-10-06 23:38 ` Gavin Shan
2022-10-07 14:31 ` Peter Xu
2022-10-10 23:18 ` Oliver Upton
2022-10-10 23:43 ` Oliver Upton
2022-10-10 23:49 ` Peter Xu
2022-10-10 23:58 ` Gavin Shan
2022-10-10 23:58 ` Oliver Upton
2022-10-11 0:20 ` Peter Xu
2022-10-11 1:12 ` Oliver Upton
2022-10-11 3:56 ` Gavin Shan
2022-10-11 6:31 ` Gavin Shan
2022-10-14 16:55 ` Peter Xu
2022-10-18 7:38 ` Oliver Upton
2022-10-18 7:40 ` Oliver Upton
2022-10-18 15:50 ` Peter Xu
2022-10-05 0:41 ` [PATCH v5 4/7] KVM: arm64: Enable ring-based dirty memory tracking Gavin Shan
2022-10-05 0:41 ` [PATCH v5 5/7] KVM: selftests: Use host page size to map ring buffer in dirty_log_test Gavin Shan
2022-10-05 0:41 ` [PATCH v5 6/7] KVM: selftests: Clear dirty ring states between two modes " Gavin Shan
2022-10-05 0:41 ` [PATCH v5 7/7] KVM: selftests: Automate choosing dirty ring size " Gavin Shan
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