[Qemu-devel] Re: [PATCH 1 of 2] kvm: Move KVM mp_state accessors to i386-specific code

[Jan Kiszka]

Hollis Blanchard wrote:
> This is the technique Anthony requested this morning, rather than
> relocating mp_state.

Then let's move it. There is not that much code to share anyway.

> To be honest, I don't care which way it's fixed;
> this is at least the 3rd patch to solve this seemingly trivial
> problem.

That's indeed unfortunate, but I think to remember that not all of these
attempts were clean.

Jan

> 
> /home/hollisb/source/qemu-fresh.hg/kvm-all.c: In function 'kvm_put_mp_state':
> /home/hollisb/source/qemu-fresh.hg/kvm-all.c:212: error: 'struct
> CPUPPCState' has no member named 'mp_state'
> 
> -Hollis
> 
> On Mon, Nov 9, 2009 at 2:12 PM, Jan Kiszka <address@hidden> wrote:
>> Hollis Blanchard wrote:
>>> Unbreaks PowerPC and S390 KVM builds.
>> What breaks precisely?
>>
>> Note that KVM_GET/SET_MP_STATE are generic IOCTLs and supposed to be
>> shared with ia64 - one day. We could still move things back then, but
>> maybe we can handle the build issues already in place, specifically as
>> qemu-kvm is carrying this in generic code since ages.
>>
>> Jan
>>
>>> Signed-off-by: Hollis Blanchard <address@hidden>
>>>
>>> diff --git a/kvm-all.c b/kvm-all.c
>>> --- a/kvm-all.c
>>> +++ b/kvm-all.c
>>> @@ -207,26 +207,6 @@ err:
>>>      return ret;
>>>  }
>>>
>>> -int kvm_put_mp_state(CPUState *env)
>>> -{
>>> -    struct kvm_mp_state mp_state = { .mp_state = env->mp_state };
>>> -
>>> -    return kvm_vcpu_ioctl(env, KVM_SET_MP_STATE, &mp_state);
>>> -}
>>> -
>>> -int kvm_get_mp_state(CPUState *env)
>>> -{
>>> -    struct kvm_mp_state mp_state;
>>> -    int ret;
>>> -
>>> -    ret = kvm_vcpu_ioctl(env, KVM_GET_MP_STATE, &mp_state);
>>> -    if (ret < 0) {
>>> -        return ret;
>>> -    }
>>> -    env->mp_state = mp_state.mp_state;
>>> -    return 0;
>>> -}
>>> -
>>>  /*
>>>   * dirty pages logging control
>>>   */
>>> diff --git a/kvm.h b/kvm.h
>>> --- a/kvm.h
>>> +++ b/kvm.h
>>> @@ -74,9 +74,6 @@ int kvm_vm_ioctl(KVMState *s, int type,
>>>
>>>  int kvm_vcpu_ioctl(CPUState *env, int type, ...);
>>>
>>> -int kvm_get_mp_state(CPUState *env);
>>> -int kvm_put_mp_state(CPUState *env);
>>> -
>>>  /* Arch specific hooks */
>>>
>>>  int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
>>> diff --git a/target-i386/kvm.c b/target-i386/kvm.c
>>> --- a/target-i386/kvm.c
>>> +++ b/target-i386/kvm.c
>>> @@ -659,6 +659,26 @@ static int kvm_get_msrs(CPUState *env)
>>>      return 0;
>>>  }
>>>
>>> +static int kvm_put_mp_state(CPUState *env)
>>> +{
>>> +    struct kvm_mp_state mp_state = { .mp_state = env->mp_state };
>>> +
>>> +    return kvm_vcpu_ioctl(env, KVM_SET_MP_STATE, &mp_state);
>>> +}
>>> +
>>> +static int kvm_get_mp_state(CPUState *env)
>>> +{
>>> +    struct kvm_mp_state mp_state;
>>> +    int ret;
>>> +
>>> +    ret = kvm_vcpu_ioctl(env, KVM_GET_MP_STATE, &mp_state);
>>> +    if (ret < 0) {
>>> +        return ret;
>>> +    }
>>> +    env->mp_state = mp_state.mp_state;
>>> +    return 0;
>>> +}
>>> +
>>>  int kvm_arch_put_registers(CPUState *env)
>>>  {
>>>      int ret;
>>
>>

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