Re: [Qemu-devel] [PATCH v4 4/6] xics: drop ICPStateClass::cpu_setup() handler

[Cédric Le Goater]

On 06/08/2017 03:43 PM, Greg Kurz wrote:
> The cpu_setup() handler is only implemented by xics_kvm, where it really
> does a typical "realize" job. Moreover, the realize() handler is called
> shortly after cpu_setup(), on the same path.
> 
> This patch converts xics_kvm to implement realize() instead of cpu_setup().
> 
> Signed-off-by: Greg Kurz <address@hidden>


Reviewed-by: Cédric Le Goater <address@hidden>

Thanks,

C.

> ---
>  hw/intc/xics.c        |    4 ----
>  hw/intc/xics_kvm.c    |   12 ++++++------
>  include/hw/ppc/xics.h |    1 -
>  3 files changed, 6 insertions(+), 11 deletions(-)
> 
> diff --git a/hw/intc/xics.c b/hw/intc/xics.c
> index fdbfddffeea5..7ccfb53c55a0 100644
> --- a/hw/intc/xics.c
> +++ b/hw/intc/xics.c
> @@ -324,10 +324,6 @@ static void icp_realize(DeviceState *dev, Error **errp)
>      cpu->intc = OBJECT(icp);
>      icp->cs = CPU(obj);
>  
> -    if (icpc->cpu_setup) {
> -        icpc->cpu_setup(icp, cpu);
> -    }
> -
>      env = &cpu->env;
>      switch (PPC_INPUT(env)) {
>      case PPC_FLAGS_INPUT_POWER7:
> diff --git a/hw/intc/xics_kvm.c b/hw/intc/xics_kvm.c
> index 41c5b9439562..3091ad3ac2c8 100644
> --- a/hw/intc/xics_kvm.c
> +++ b/hw/intc/xics_kvm.c
> @@ -115,9 +115,9 @@ static void icp_kvm_reset(ICPState *icp)
>      icp_set_kvm_state(icp, 1);
>  }
>  
> -static void icp_kvm_cpu_setup(ICPState *icp, PowerPCCPU *cpu)
> +static void icp_kvm_realize(ICPState *icp, Error **errp)
>  {
> -    CPUState *cs = CPU(cpu);
> +    CPUState *cs = icp->cs;
>      KVMEnabledICP *enabled_icp;
>      unsigned long vcpu_id = kvm_arch_vcpu_id(cs);
>      int ret;
> @@ -139,9 +139,9 @@ static void icp_kvm_cpu_setup(ICPState *icp, PowerPCCPU 
> *cpu)
>  
>      ret = kvm_vcpu_enable_cap(cs, KVM_CAP_IRQ_XICS, 0, kernel_xics_fd, 
> vcpu_id);
>      if (ret < 0) {
> -        error_report("Unable to connect CPU%ld to kernel XICS: %s", vcpu_id,
> -                     strerror(errno));
> -        exit(1);
> +        error_setg(errp, "Unable to connect CPU%ld to kernel XICS: %s", 
> vcpu_id,
> +                   strerror(errno));
> +        return;
>      }
>      enabled_icp = g_malloc(sizeof(*enabled_icp));
>      enabled_icp->vcpu_id = vcpu_id;
> @@ -154,7 +154,7 @@ static void icp_kvm_class_init(ObjectClass *klass, void 
> *data)
>  
>      icpc->pre_save = icp_get_kvm_state;
>      icpc->post_load = icp_set_kvm_state;
> -    icpc->cpu_setup = icp_kvm_cpu_setup;
> +    icpc->realize = icp_kvm_realize;
>      icpc->reset = icp_kvm_reset;
>  }
>  
> diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
> index 37b8fb1e8817..28d248abad61 100644
> --- a/include/hw/ppc/xics.h
> +++ b/include/hw/ppc/xics.h
> @@ -68,7 +68,6 @@ struct ICPStateClass {
>      void (*realize)(ICPState *icp, Error **errp);
>      void (*pre_save)(ICPState *icp);
>      int (*post_load)(ICPState *icp, int version_id);
> -    void (*cpu_setup)(ICPState *icp, PowerPCCPU *cpu);
>      void (*reset)(ICPState *icp);
>  };
>  
>