[PATCH v3 0/4] Dirty Ring support (Libvirt)
Hyman
huangy81 at chinatelecom.cn
Sun Aug 29 23:13:50 UTC 2021
ping - hi, what would you think about this patchset ? :)
在 2021/6/25 0:51, huangy81 at chinatelecom.cn 写道:
> From: Hyman Huang(黄勇) <huangy81 at chinatelecom.cn>
>
> v3
> - rebase master and fix the confilict when apply
> "conf: introduce dirty_ring_size in struct "_virDomainDef" to current
> master.
>
> v2
> - split patchset into 4 patches
>
> - leave out the tcg case when building commandline.
>
> - handle the VIR_DOMAIN_KVM_DIRTY_RING case independently in ,
> virDomainFeatureDefParse and virDomainDefFeaturesCheckABIStability,
> do not integrate it with other cases...
>
> - add dirty ring size check in virDomainDefFeaturesCheckABIStability
>
> - modify zero checks on integers of dirty ring size in a explicit way.
>
> - set the default value of dirty ring size in a post-parser callback.
>
> - check the absence of kvm_feature in a explicit way.
>
> - code clean of virTristateSwitchTypeToString function.
>
> this version's modification base on Peter's advices mostly, thanks
> a lot, please review !
>
> Best Regards !
> Hyman Huang(黄勇)
>
> v1
> since qemu has introduced a dirty ring feature in 6.1.0, may be it's
> the right time to introduce dirty ring in libvirt meanwhile.
>
> this patch add feature named 'dirty-ring', which enable dirty ring
> feature when starting vm. to try this out, three things has done
> in this patchset:
>
> - introduce QEMU_CAPS_ACCEL so the the libvirt can use it to select
> the right option when specifying the accelerator type.
>
> - switch the option "-machine accel=xxx" to "-accel xxx" when specifying
> accelerator type once libvirt build QEMU command line, so that
> dirty-ring-size property can be passed to qemu when start vm.
>
> - introduce dirty_ring_size to hold the ring size configured by user
> and pass dirty_ring_size when building qemu commandline if dirty
> ring feature enabled.
>
> though dirty ring is per-cpu logically, the size of dirty ring is
> registered by 'struct kvm' in QEMU. so we would like to place the
> dirty_ring_size as a property of vm in Libvirt as the QEMU do.
>
> the dirty ring feature is disabled by default, and if enabled, the
> default value of ring size if 4096 if size not configured.
>
> for more details about dirty ring and "-accel" option, please refer to:
> https://lore.kernel.org/qemu-devel/20210108165050.406906-10-peterx@redhat.com/
> https://lore.kernel.org/qemu-devel/3aa73987-40e8-3619-0723-9f17f73850bd@redhat.com/
>
> please review, Thanks!
>
> Best Regards !
>
> Hyman Huang(黄勇) (4):
> qemu_capabilities: introduce QEMU_CAPS_ACCEL
> qemu_command: switch accelerator option to new style
> conf: introduce dirty_ring_size in struct "_virDomainDef"
> qemu: support dirty ring feature
>
> docs/formatdomain.rst | 16 +++--
> docs/schemas/domaincommon.rng | 10 +++
> src/conf/domain_conf.c | 74 +++++++++++++++++++++-
> src/conf/domain_conf.h | 4 ++
> src/qemu/qemu_capabilities.c | 2 +
> src/qemu/qemu_capabilities.h | 1 +
> src/qemu/qemu_command.c | 40 +++++++++++-
> tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml | 1 +
> tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml | 1 +
> tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml | 1 +
> tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml | 1 +
> tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml | 1 +
> tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml | 1 +
> tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml | 1 +
> tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml | 1 +
> tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml | 1 +
> tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml | 1 +
> tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.1.0.sparc.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml | 1 +
> tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml | 1 +
> tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml | 1 +
> tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml | 1 +
> ...64-default-cpu-kvm-virt-4.2.aarch64-latest.args | 3 +-
> .../aarch64-features-sve.aarch64-latest.args | 3 +-
> .../channel-unix-guestfwd.x86_64-latest.args | 3 +-
> .../clock-timer-armvtimer.aarch64-latest.args | 3 +-
> .../console-virtio-unix.x86_64-latest.args | 3 +-
> .../cpu-Icelake-Server-pconfig.x86_64-3.1.0.args | 3 +-
> .../cpu-Icelake-Server-pconfig.x86_64-latest.args | 3 +-
> .../cpu-tsc-frequency.x86_64-4.0.0.args | 3 +-
> .../cpu-tsc-high-frequency.x86_64-latest.args | 3 +-
> .../default-video-type-aarch64.aarch64-latest.args | 3 +-
> .../default-video-type-ppc64.ppc64-latest.args | 3 +-
> .../default-video-type-s390x.s390x-latest.args | 3 +-
> .../disk-cdrom-network.x86_64-2.12.0.args | 3 +-
> .../disk-cdrom-network.x86_64-latest.args | 3 +-
> .../disk-network-http.x86_64-latest.args | 3 +-
> .../hugepages-memaccess3.x86_64-latest.args | 3 +-
> .../intel-iommu-aw-bits.x86_64-latest.args | 3 +-
> .../intel-iommu-caching-mode.x86_64-latest.args | 3 +-
> .../intel-iommu-device-iotlb.x86_64-latest.args | 3 +-
> .../intel-iommu-eim.x86_64-latest.args | 3 +-
> ...ty-sev-missing-platform-info.x86_64-2.12.0.args | 3 +-
> .../launch-security-sev.x86_64-2.12.0.args | 3 +-
> .../launch-security-sev.x86_64-6.0.0.args | 3 +-
> ...emfd-memory-default-hugepage.x86_64-latest.args | 3 +-
> .../memfd-memory-numa.x86_64-latest.args | 3 +-
> .../memory-hotplug-virtio-pmem.x86_64-5.2.0.args | 3 +-
> .../memory-hotplug-virtio-pmem.x86_64-latest.args | 3 +-
> .../os-firmware-bios.x86_64-latest.args | 3 +-
> ...irmware-efi-no-enrolled-keys.x86_64-latest.args | 3 +-
> .../os-firmware-efi-secboot.x86_64-latest.args | 3 +-
> .../os-firmware-efi.x86_64-latest.args | 3 +-
> .../parallel-unix-chardev.x86_64-latest.args | 3 +-
> ...4-default-cpu-kvm-pseries-2.7.ppc64-latest.args | 3 +-
> ...4-default-cpu-kvm-pseries-3.1.ppc64-latest.args | 3 +-
> ...4-default-cpu-kvm-pseries-4.2.ppc64-latest.args | 3 +-
> ...efault-cpu-kvm-ccw-virtio-2.7.s390x-latest.args | 3 +-
> ...efault-cpu-kvm-ccw-virtio-4.2.s390x-latest.args | 3 +-
> .../smartcard-passthrough-unix.x86_64-latest.args | 3 +-
> .../usb-redir-unix.x86_64-latest.args | 3 +-
> .../vhost-user-fs-fd-memory.x86_64-latest.args | 3 +-
> .../virtio-rng-builtin.x86_64-5.2.0.args | 3 +-
> .../virtio-rng-builtin.x86_64-latest.args | 3 +-
> .../virtio-rng-egd-unix.x86_64-5.2.0.args | 3 +-
> .../virtio-rng-egd-unix.x86_64-latest.args | 3 +-
> ...86_64-default-cpu-kvm-pc-4.2.x86_64-latest.args | 3 +-
> ...6_64-default-cpu-kvm-q35-4.2.x86_64-latest.args | 3 +-
> 91 files changed, 268 insertions(+), 55 deletions(-)
>
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