Re: [Qemu-devel] [RFC PATCH v3 06/24] spapr: Consolidate cpu init code into a routine

[Thomas Huth]

On Fri, 24 Apr 2015 12:17:28 +0530
Bharata B Rao <address@hidden> wrote:

> Factor out bits of sPAPR specific CPU initialization code into
> a separate routine so that it can be called from CPU hotplug
> path too.
> 
> Signed-off-by: Bharata B Rao <address@hidden>
> Reviewed-by: David Gibson <address@hidden>
> ---
>  hw/ppc/spapr.c | 54 +++++++++++++++++++++++++++++-------------------------
>  1 file changed, 29 insertions(+), 25 deletions(-)
> 
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index a56f9a1..5c8f2ff 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -1440,6 +1440,34 @@ static void spapr_drc_reset(void *opaque)
>      }
>  }
>  
> +static void spapr_cpu_init(PowerPCCPU *cpu)
> +{
> +    CPUPPCState *env = &cpu->env;
> +
> +    /* Set time-base frequency to 512 MHz */
> +    cpu_ppc_tb_init(env, TIMEBASE_FREQ);
> +
> +    /* PAPR always has exception vectors in RAM not ROM. To ensure this,
> +     * MSR[IP] should never be set.
> +     */
> +    env->msr_mask &= ~(1 << 6);

While you're at it ... could we maybe get a proper #define for that MSR
bit? (just like the other ones in target-ppc/cpu.h)

> +    /* Tell KVM that we're in PAPR mode */
> +    if (kvm_enabled()) {
> +        kvmppc_set_papr(cpu);
> +    }
> +
> +    if (cpu->max_compat) {
> +        if (ppc_set_compat(cpu, cpu->max_compat) < 0) {
> +            exit(1);
> +        }
> +    }
> +
> +    xics_cpu_setup(spapr->icp, cpu);
> +
> +    qemu_register_reset(spapr_cpu_reset, cpu);
> +}

 Thomas