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Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it |
Date: |
Wed, 27 Mar 2013 12:01:20 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4 |
Il 21/03/2013 15:28, Igor Mammedov ha scritto:
> * synchronize CPU state to KVM
> * resume CPU, it makes CPU be able to handle interrupts in TCG mode
> and/or with user-space APIC.
>
> Signed-off-by: Igor Mammedov <address@hidden>
> ---
> cpus.c | 11 ++++++++---
> include/sysemu/cpus.h | 3 +++
> stubs/Makefile.objs | 1 +
> stubs/resume_vcpu.c | 6 ++++++
> target-i386/cpu.c | 5 +++++
> 5 files changed, 23 insertions(+), 3 deletions(-)
> create mode 100644 stubs/resume_vcpu.c
>
> diff --git a/cpus.c b/cpus.c
> index e919dd7..ae479bf 100644
> --- a/cpus.c
> +++ b/cpus.c
> @@ -973,6 +973,13 @@ void pause_all_vcpus(void)
> }
> }
>
> +void resume_vcpu(CPUState *cpu)
> +{
> + cpu->stop = false;
> + cpu->stopped = false;
> + qemu_cpu_kick(cpu);
> +}
> +
> void resume_all_vcpus(void)
> {
> CPUArchState *penv = first_cpu;
> @@ -980,9 +987,7 @@ void resume_all_vcpus(void)
> qemu_clock_enable(vm_clock, true);
> while (penv) {
> CPUState *pcpu = ENV_GET_CPU(penv);
> - pcpu->stop = false;
> - pcpu->stopped = false;
> - qemu_cpu_kick(pcpu);
> + resume_vcpu(pcpu);
> penv = penv->next_cpu;
> }
> }
> diff --git a/include/sysemu/cpus.h b/include/sysemu/cpus.h
> index 6502488..9437df5 100644
> --- a/include/sysemu/cpus.h
> +++ b/include/sysemu/cpus.h
> @@ -1,11 +1,14 @@
> #ifndef QEMU_CPUS_H
> #define QEMU_CPUS_H
>
> +#include "qom/cpu.h"
> +
> /* cpus.c */
> void qemu_init_cpu_loop(void);
> void resume_all_vcpus(void);
> void pause_all_vcpus(void);
> void cpu_stop_current(void);
> +void resume_vcpu(CPUState *cpu);
>
> void cpu_synchronize_all_states(void);
> void cpu_synchronize_all_post_reset(void);
> diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
> index 9c55b34..28fb4f8 100644
> --- a/stubs/Makefile.objs
> +++ b/stubs/Makefile.objs
> @@ -23,3 +23,4 @@ stub-obj-y += sysbus.o
> stub-obj-y += vm-stop.o
> stub-obj-y += vmstate.o
> stub-obj-$(CONFIG_WIN32) += fd-register.o
> +stub-obj-y += resume_vcpu.o
> diff --git a/stubs/resume_vcpu.c b/stubs/resume_vcpu.c
> new file mode 100644
> index 0000000..383b71a
> --- /dev/null
> +++ b/stubs/resume_vcpu.c
> @@ -0,0 +1,6 @@
> +#include "qemu-common.h"
> +#include "sysemu/cpus.h"
> +
> +void resume_vcpu(CPUState *cpu)
> +{
> +}
> diff --git a/target-i386/cpu.c b/target-i386/cpu.c
> index d03ff73..631bcd8 100644
> --- a/target-i386/cpu.c
> +++ b/target-i386/cpu.c
> @@ -2260,6 +2260,11 @@ out:
> error_propagate(errp, local_err);
> return;
> }
> +
> + if (dev->hotplugged) {
> + cpu_synchronize_post_init(env);
> + resume_vcpu(CPU(cpu));
> + }
I think the resume_vcpu should not be here, but in the superclass.
Paolo
> }
>
> /* Enables contiguous-apic-ID mode, for compatibility */
>
- [Qemu-devel] [RFC 00/12] target-i386: CPU hot-add with cpu_set QMP command, Igor Mammedov, 2013/03/21
- [Qemu-devel] [PATCH 01/12] target-i386: consolidate error propagation in x86_cpu_realizefn(), Igor Mammedov, 2013/03/21
- [Qemu-devel] [PATCH 03/12] target-i386: split out CPU creation and features parsing into cpu_x86_create(), Igor Mammedov, 2013/03/21
- [Qemu-devel] [PATCH 02/12] target-i386: split APIC creation from initialization in x86_cpu_realizefn(), Igor Mammedov, 2013/03/21
- [Qemu-devel] [PATCH 04/12] target-i386: introduce apic-id property, Igor Mammedov, 2013/03/21
- [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it, Igor Mammedov, 2013/03/21
- Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it, Igor Mammedov, 2013/03/27
- Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it, Andreas Färber, 2013/03/27
- Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it, Igor Mammedov, 2013/03/27
- Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it, Andreas Färber, 2013/03/27
- Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it, Igor Mammedov, 2013/03/27
- Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it, Paolo Bonzini, 2013/03/27
- Re: [Qemu-devel] [PATCH 05/12] target-i386: push hot-plugged VCPU state to KVM and unstop it, Igor Mammedov, 2013/03/27
- [Qemu-devel] [PATCH 05/14] cpu: Pass CPUState to *cpu_synchronize_post*(), Igor Mammedov, 2013/03/27
- [Qemu-devel] [PATCH 06/14] cpu: call cpu_synchronize_post_init() from CPUClass.realize() if hotplugged, Igor Mammedov, 2013/03/27
- [Qemu-devel] [PATCH 07/14] cpu: introduce CPUClass.resume() method, Igor Mammedov, 2013/03/27