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[Qemu-devel] [PATCH 00/22 v2] target-i386: CPU hot-add with cpu-add QMP
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [PATCH 00/22 v2] target-i386: CPU hot-add with cpu-add QMP command |
Date: |
Fri, 5 Apr 2013 16:36:52 +0200 |
Implements alternative way for hot-adding CPU using cpu-add QMP command,
wich could be useful until it would be possible to add CPUs via device_add.
All patches except the last are also applicable to device_add aprroach.
To hot-add CPU use following command from qmp-shell:
cpu-add id=[apic id]
git tree for testing: https://github.com/imammedo/qemu/tree/cpu_add.v2
v1->v2:
* generalize cpu sync to KVM, resume and hot-plug notification and
invoke them form CPUClass, to make available to all targets.
* introduce cpu_exists() and CPUClass.get_firmware_id() and use
the last one in acpi_piix to make code target independent.
* move IOAPIC to ICC bus, it was suggested and easy to convert.
* leave kvmvapic as SysBusDevice, it doesn't affect hot-plug and
created only once for all APIC instances. I haven't found yet
good/clean enough way to convert it to ICCDevice. May be follow-up
though.
* split one big ICC patch into several, one per converted device
* add cpu_hot_add hook to machine and implement it for target-i386,
instead of adding stabs. Could be used by other targets to
implement cpu-add.
* pre-allocate links<CPU> for all possible CPUs and make them available
at /machine/icc-bridge/cpu[0..N] QOM path, so users could find out
possible/free CPU IDs to use in cpu-add command.
CC: address@hidden
CC: address@hidden
CC: address@hidden
Igor Mammedov (22):
target-i386: consolidate error propagation in x86_cpu_realizefn()
target-i386: split APIC creation from initialization in
x86_cpu_realizefn()
target-i386: split out CPU creation and features parsing into
cpu_x86_create()
cpu: Pass CPUState to *cpu_synchronize_post*()
cpu: call cpu_synchronize_post_init() from CPUClass.realize() if
hotplugged
cpu: introduce CPUClass.resume() method
target-i386: kvmvapic: replace FROM_SYSBUS() with QOM type cast
target-i386: ioapic: replace FROM_SYSBUS() with QOM type cast
introduce CPU hot-plug notifier
rtc: update rtc_cmos on CPU hot-plug
cpu: introduce get_firmware_id() method and override it for
target-i386
cpu: add helper cpu_exists(), to check if CPU with specified id exists
acpi_piix4: add infrastructure to send CPU hot-plug GPE to guest
target-i386: introduce apic-id property
introduce ICC bus/device/bridge
target-i386: cpu: attach ICC bus to CPU on its creation
target-i386: replace MSI_SPACE_SIZE with APIC_SPACE_SIZE
target-i386: move APIC to ICC bus
target-i386: move IOAPIC to ICC bus
qdev: set device's parent before calling realize() down inheritance
chain.
target-i386: expose all possible CPUs as /machine/icc-bridge/cpu[0..N]
links
add cpu-add qmp command and implement CPU hot-add for target-i386
Makefile.target | 6 ++
cpus.c | 19 ++++--
hw/acpi_piix4.c | 114 ++++++++++++++++++++++++++++++++-
hw/apic.c | 2 +-
hw/apic_common.c | 17 +++--
hw/apic_internal.h | 8 +--
hw/boards.h | 3 +
hw/i386/Makefile.objs | 2 +-
hw/i386/kvmvapic.c | 8 ++-
hw/i386/pc.c | 85 +++++++++++++++++++-----
hw/i386/pc_piix.c | 9 ++-
hw/i386/pc_q35.c | 9 ++-
hw/icc_bus.c | 167 ++++++++++++++++++++++++++++++++++++++++++++++++
hw/icc_bus.h | 55 ++++++++++++++++
hw/ioapic_common.c | 17 +++--
hw/ioapic_internal.h | 6 +-
hw/kvm/apic.c | 2 +-
hw/kvm/ioapic.c | 2 +-
hw/mc146818rtc.c | 12 ++++
hw/pc.h | 2 +-
hw/qdev.c | 8 +--
hw/xen_apic.c | 2 +-
include/exec/memory.h | 19 ++++++
include/qom/cpu.h | 14 ++++
include/sysemu/kvm.h | 30 +++++----
include/sysemu/sysemu.h | 3 +
kvm-all.c | 9 +--
kvm-stub.c | 9 ++-
qapi-schema.json | 11 ++++
qmp-commands.hx | 23 +++++++
qmp.c | 10 +++
qom/cpu.c | 48 ++++++++++++++
stubs/do_cpu_hot_add.c | 7 ++
target-i386/cpu.c | 138 ++++++++++++++++++++++++++++++---------
target-i386/cpu.h | 2 +
vl.c | 7 +-
36 files changed, 775 insertions(+), 110 deletions(-)
create mode 100644 hw/icc_bus.c
create mode 100644 hw/icc_bus.h
create mode 100644 stubs/do_cpu_hot_add.c
--
1.8.1.4
- [Qemu-devel] [PATCH 00/22 v2] target-i386: CPU hot-add with cpu-add QMP command,
Igor Mammedov <=