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SubjectRe: [PATCH] KVM: forward declare structs in kvm_types.h
Il 29/08/2014 14:46, Radim Krčmář ha scritto:
> 2014-08-29 14:01+0200, Paolo Bonzini:
>> Opaque KVM structs are useful for prototypes in asm/kvm_host.h, to avoid
>> "'struct foo' declared inside parameter list" warnings (and consequent
>> breakage due to conflicting types).
>>
>> Move them from individual files to a generic place in linux/kvm_types.h.
>>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>> ---
>
> Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
>
> (Inclusion of <linux/types.h> seems to be piggybacking, but is a nice
> thing to do :)

I just wasn't sure if including linux/kvm_types.h was enough alone.

> And I'd apply these changes: (Definitely the first hunk.)
>
> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index 33d8d0a..e098dce 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -140,8 +140,6 @@ static inline bool is_error_page(struct page *page)
> #define KVM_USERSPACE_IRQ_SOURCE_ID 0
> #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1
>
> -struct kvm;
> -struct kvm_vcpu;
> extern struct kmem_cache *kvm_vcpu_cache;
>
> extern spinlock_t kvm_lock;
> @@ -325,8 +323,6 @@ struct kvm_kernel_irq_routing_entry {
> struct hlist_node link;
> };
>
> -struct kvm_irq_routing_table;
> -
> #ifndef KVM_PRIVATE_MEM_SLOTS
> #define KVM_PRIVATE_MEM_SLOTS 0
> #endif
> @@ -1036,8 +1032,6 @@ static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
>
> extern bool kvm_rebooting;
>
> -struct kvm_device_ops;
> -
> struct kvm_device {
> struct kvm_device_ops *ops;
> struct kvm *kvm;
> diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h
> index 1d6daca..53c4f20 100644
> --- a/include/linux/kvm_types.h
> +++ b/include/linux/kvm_types.h
> @@ -19,7 +19,9 @@
>
> struct kvm;
> struct kvm_async_pf;
> +struct kvm_device_ops;
> struct kvm_interrupt;
> +struct kvm_irq_routing_table;
> struct kvm_memory_slot;
> struct kvm_one_reg;
> struct kvm_run;
>

Good idea, thanks.

Paolo
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