[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH RFC v2 0/7] coordinate cpu hotplug/unplug bewteen QE
From: |
liguang |
Subject: |
[Qemu-devel] [PATCH RFC v2 0/7] coordinate cpu hotplug/unplug bewteen QEMU and kernel by EC |
Date: |
Thu, 6 Jun 2013 11:16:53 +0800 |
v2:
1.remove PIIX4_PROC_BASE operations for cpu hotplug
2.fix wrong description fo cpu-del
patch 1 adds ACPI Embedded Controller (EC),
refer-to:
ACPI SPEC v5 chapter 12
"ACPI Embedded Controller Interface Specification"
EC is a standard ACPI device, it plays flexible roles,
especially be event carrier, it can pass events between platform
and OS, so OS can execute _Qxx method which defined
by yourself and query EC's ACPI space which can be a buffer for
many purposes
here, I want to deliver CPU online/offline event between
OS and QEMU for CPU hotplug feature, then we will don't
need to "echo 1 > /sys/devices/system/cpu/cpu1/online"
again after 'cpu-add' and also for offline to do real cpu
removal.
what I am trying to do is emulated physical addition/removal
(like described by linux kernel document for cpu hotplug --
linux-2.6/Documentation/cpu-hotplug.txt) for QEMU.
these RFC patches are sent for demo what I am trying to do.
the design process simply like following:
hotplug
qemu::ec::sci -> kernel::ec::gpe::notifier->
kernel::cpu_physic_hotplug::handler->kernel::cpu_up
unplug
kernel::cpu_down::kernel::cpu_physic_hotplug::handler->
kernel::ec::ec_write->qemu::ec::->qemu::cpu-unplug
sorry, I should poll cpu-unplug cmd sent from kernel,
but, it's a little trivial, I want do it later.
for kernel patches:
http://comments.gmane.org/gmane.linux.kernel/1503460
Li Guang (8)
acpi: add ACPI Embedded Controller support
ich9: add notifer for ec to generate sci
ec: add operations for _Qxx events
piix4: add notifer for ec to generate sci
piix4: add events for cpu hotplug
qmp: add 'cpu-del' command
pc: add EC qdev init for piix & q35
cpu-hotplug: remove memory regison for cpu hotplug
default-configs/x86_64-softmmu.mak | 1 +
hw/acpi/Makefile.objs | 1 +
hw/acpi/ec.c | 225 ++++++++++++++++++++++++++++++++++++
hw/acpi/ich9.c | 15 +++++++++++++++
hw/acpi/piix4.c | 68 ++++++++++++++
hw/i386/pc.c | 46 ++++++++++++++++++++++++++++--
hw/i386/pc_piix.c | 7 +
hw/i386/pc_q35.c | 6 +
include/hw/acpi/ec.h | 44 ++++++
include/hw/acpi/ich9.h | 1 +
include/hw/boards.h | 5 +++--
include/hw/i386/pc.h | 1 +
qapi-schema.json | 13 +++++++++++++
qmp-commands.hx | 23 +++++++++++++++++++++++
qmp.c | 9 +++++++++
15 files changed, 411 insertions(+), 54 deletions(-)
create mode 100644 hw/acpi/ec.c
create mode 100644 include/hw/acpi/ec.h
- [Qemu-devel] [PATCH RFC v2 0/7] coordinate cpu hotplug/unplug bewteen QEMU and kernel by EC,
liguang <=
- [Qemu-devel] [PATCH RFC v2 1/8] acpi: add ACPI Embedded Controller support, liguang, 2013/06/05
- [Qemu-devel] [PATCH RFC v2 2/8] ich9: add notifer for ec to generate sci, liguang, 2013/06/05
- [Qemu-devel] [PATCH RFC v2 3/8] ec: add operations for _Qxx events, liguang, 2013/06/05
- [Qemu-devel] [PATCH RFC v2 5/8] piix4: add events for cpu hotplug, liguang, 2013/06/05
- [Qemu-devel] [PATCH RFC v2 4/8] piix4: add notifer for ec to generate sci, liguang, 2013/06/05
- [Qemu-devel] [PATCH RFC v2 8/8] cpu-hotplug: remove memory regison for cpu hotplug, liguang, 2013/06/05
- [Qemu-devel] [PATCH RFC v2 6/8] qmp: add 'cpu-del' command, liguang, 2013/06/05
- [Qemu-devel] [PATCH RFC v2 7/8] pc: add EC qdev init for piix & q35, liguang, 2013/06/05
- Re: [Qemu-devel] [PATCH RFC v2 0/7] coordinate cpu hotplug/unplug bewteen QEMU and kernel by EC, Michael S. Tsirkin, 2013/06/06