Re: [PATCH] kvm: declare kvm_ioapic in kvm_host.h

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Am Thursday 26 February 2009 13:43:54 schrieb Avi Kivity:
> > Declaring struct kvm_ioapic should help.
> Better to limit the declaration to archs that have ioapics... do we have 
> a KVM_HAVE_IOAPIC define?

Something like (works on s390, not tested on x86)?

[PATCH] kvm: use ioapic functions only on affected hardware

From: Christian Borntraeger <borntraeger@xxxxxxxxxx>

Since "    KVM: Unify the delivery of IOAPIC and MSI interrupts"
I get the following warnings:

  CC [M]  arch/s390/kvm/kvm-s390.o
In file included from arch/s390/kvm/kvm-s390.c:22:
include/linux/kvm_host.h:357: warning: 'struct kvm_ioapic' declared inside parameter list
include/linux/kvm_host.h:357: warning: its scope is only this definition or declaration, which is probably not what you want

This patch limits IOAPIC functions for architectures that have one.

Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
---
 include/linux/kvm_host.h |    2 ++
 1 file changed, 2 insertions(+)

Index: kvm/include/linux/kvm_host.h
===================================================================
--- kvm.orig/include/linux/kvm_host.h
+++ kvm/include/linux/kvm_host.h
@@ -352,9 +352,11 @@ void kvm_unregister_irq_mask_notifier(st
 				      struct kvm_irq_mask_notifier *kimn);
 void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
 
+#ifdef __KVM_HAVE_IOAPIC
 void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
 				   union kvm_ioapic_redirect_entry *entry,
 				   unsigned long *deliver_bitmask);
+#endif
 int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
 void kvm_register_irq_ack_notifier(struct kvm *kvm,
--
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