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[Qemu-devel] [PATCH 0/3] arm/virt: refine virt.c code and implement hot_
From: |
Li Zhang |
Subject: |
[Qemu-devel] [PATCH 0/3] arm/virt: refine virt.c code and implement hot_add_cpu interface |
Date: |
Fri, 26 May 2017 17:21:05 +0800 |
From: Li Zhang <address@hidden>
virt machine doesn't support hot_add_cpu interface. This patchset is to
implement
hot_add_cpu interface. A CPU can be added by QMP command with QEMU monitor.
Here is command to add a CPU with QMP command.
* qemu-system-aarch64 -machine virt -cpu cortex-a15 -smp 1,maxcpus=4 \
-monitor telnet:127.0.0.1:4444,server,nowait -nographic
* connect monitor: telnet 127.0.0.1 4444
* execute qmp command: cpu-add 1
Currently, when KVM is enabled and add a CPU with QMP command, QEMU
reports error "kvm_init_vcpu failed: Device or resourc busy". KVM can't
create a new CPU when vgic has been initialized and irqchip_in_kernel in
function kvm_arch_vcpu_create. It needs to change KVM code in the future.
Li Zhang (3):
arm/virt: Refine fdt_add_cpu_nodes code
arm/virt: Refine code of machvirt_init
arm/virt: Implement hot_add_cpu interface
hw/arm/virt.c | 344 ++++++++++++++++++++++++++++++++++------------------------
1 file changed, 202 insertions(+), 142 deletions(-)
--
2.7.4
- [Qemu-devel] [PATCH 0/3] arm/virt: refine virt.c code and implement hot_add_cpu interface,
Li Zhang <=