| Message ID | 20220927005439.21130-1-gshan@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | KVM: arm64: Enable ring-based dirty memory tracking | expand |
+ Sean On Mon, 26 Sep 2022 20:54:33 -0400, Gavin Shan <gshan@redhat.com> wrote: > > 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 looks good to me as it stands. If someone on the x86 side of things is willing to ack the x86 changes (both here and in my series[0]), I'm happy to queue the whole thing. Thanks, M. [0] https://lore.kernel.org/kvmarm/20220926145120.27974-1-maz@kernel.org
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. [0] https://lore.kernel.org/kvmarm/20220926145120.27974-1-maz@kernel.org 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 ========= 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 (6): KVM: x86: Introduce KVM_REQ_RING_SOFT_FULL KVM: x86: Move declaration of kvm_cpu_dirty_log_size() to kvm_dirty_ring.h 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 | 2 +- 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 | 14 +++--- include/linux/kvm_host.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 ++++++- 11 files changed, 79 insertions(+), 34 deletions(-)