| Message ID | 20221011061447.131531-1-gshan@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | KVM: arm64: Enable ring-based dirty memory tracking | expand |
On 10/11/22 2:14 PM, Gavin Shan 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 series is going to land on v6.1.rc0 pretty soon. > > [0] https://lore.kernel.org/kvmarm/20220926145120.27974-1-maz@kernel.org > > v5: https://lore.kernel.org/all/20221005004154.83502-1-gshan@redhat.com/ > 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 > ========= > v6: > * Add CONFIG_HAVE_KVM_DIRTY_RING_WITH_BITMAP, for arm64 > to advertise KVM_CAP_DIRTY_RING_WITH_BITMAP in > PATCH[v6 3/8] (Oliver/Peter) > * Add helper kvm_dirty_ring_exclusive() to check if > traditional bitmap-based dirty log tracking is > exclusive to dirty-ring in PATCH[v6 3/8] (Peter) > * Enable KVM_CAP_DIRTY_RING_WITH_BITMAP in PATCH[v6 5/8] (Gavin) > 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 (8): > KVM: x86: Introduce KVM_REQ_RING_SOFT_FULL > KVM: x86: Move declaration of kvm_cpu_dirty_log_size() to > kvm_dirty_ring.h > KVM: Add support for using dirty ring in conjunction with bitmap > KVM: arm64: Enable ring-based dirty memory tracking > KVM: selftests: Enable KVM_CAP_DIRTY_LOG_RING_WITH_BITMAP if possible > 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 | 2 + > 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 | 15 +++--- > include/linux/kvm_host.h | 2 + > include/uapi/linux/kvm.h | 1 + > tools/testing/selftests/kvm/dirty_log_test.c | 53 ++++++++++++++------ > tools/testing/selftests/kvm/lib/kvm_util.c | 5 +- > virt/kvm/Kconfig | 8 +++ > virt/kvm/dirty_ring.c | 24 ++++++++- > virt/kvm/kvm_main.c | 34 +++++++++---- > 14 files changed, 132 insertions(+), 52 deletions(-) > It seems Oliver and Sean were missed in the loop, even though I explicitly copied them by git-send-email. Amend to include them. Thanks, Gavin
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 v5: https://lore.kernel.org/all/20221005004154.83502-1-gshan@redhat.com/ 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 ========= v6: * Add CONFIG_HAVE_KVM_DIRTY_RING_WITH_BITMAP, for arm64 to advertise KVM_CAP_DIRTY_RING_WITH_BITMAP in PATCH[v6 3/8] (Oliver/Peter) * Add helper kvm_dirty_ring_exclusive() to check if traditional bitmap-based dirty log tracking is exclusive to dirty-ring in PATCH[v6 3/8] (Peter) * Enable KVM_CAP_DIRTY_RING_WITH_BITMAP in PATCH[v6 5/8] (Gavin) 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 (8): KVM: x86: Introduce KVM_REQ_RING_SOFT_FULL KVM: x86: Move declaration of kvm_cpu_dirty_log_size() to kvm_dirty_ring.h KVM: Add support for using dirty ring in conjunction with bitmap KVM: arm64: Enable ring-based dirty memory tracking KVM: selftests: Enable KVM_CAP_DIRTY_LOG_RING_WITH_BITMAP if possible 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 | 2 + 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 | 15 +++--- include/linux/kvm_host.h | 2 + include/uapi/linux/kvm.h | 1 + tools/testing/selftests/kvm/dirty_log_test.c | 53 ++++++++++++++------ tools/testing/selftests/kvm/lib/kvm_util.c | 5 +- virt/kvm/Kconfig | 8 +++ virt/kvm/dirty_ring.c | 24 ++++++++- virt/kvm/kvm_main.c | 34 +++++++++---- 14 files changed, 132 insertions(+), 52 deletions(-)