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KVM: Change irq routing table to use gsi indexed array

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Use gsi indexed array instead of scanning all entries on each interrupt
injection.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov
2009-08-24 11:54:20 +03:00
committed by Avi Kivity
parent 1a6e4a8c27
commit 46e624b95c
3 changed files with 71 additions and 39 deletions
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21
include/linux/kvm_host.h
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@@ -128,7 +128,17 @@ struct kvm_kernel_irq_routing_entry {
} irqchip;
struct msi_msg msi;
};
struct list_head link;
struct hlist_node link;
};
struct kvm_irq_routing_table {
struct kvm_kernel_irq_routing_entry *rt_entries;
u32 nr_rt_entries;
/*
* Array indexed by gsi. Each entry contains list of irq chips
* the gsi is connected to.
*/
struct hlist_head map[0];
};
struct kvm {
@@ -166,7 +176,7 @@ struct kvm {
struct mutex irq_lock;
#ifdef CONFIG_HAVE_KVM_IRQCHIP
struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
struct kvm_irq_routing_table *irq_routing;
struct hlist_head mask_notifier_list;
#endif
@@ -390,7 +400,12 @@ void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
struct kvm_irq_mask_notifier *kimn);
void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
#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, u32 irq, int level);
void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
void kvm_register_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian);