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KVM: s390: irq routing for adapter interrupts.

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Introduce a new interrupt class for s390 adapter interrupts and enable
irqfds for s390.

This is depending on a new s390 specific vm capability, KVM_CAP_S390_IRQCHIP,
that needs to be enabled by userspace.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Cornelia Huck
2013-07-15 13:36:01 +02:00
parent 841b91c584
commit 8422359877
9 changed files with 209 additions and 5 deletions
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9
include/linux/kvm_host.h
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@@ -297,6 +297,14 @@ static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memsl
return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
}
struct kvm_s390_adapter_int {
u64 ind_addr;
u64 summary_addr;
u64 ind_offset;
u32 summary_offset;
u32 adapter_id;
};
struct kvm_kernel_irq_routing_entry {
u32 gsi;
u32 type;
@@ -309,6 +317,7 @@ struct kvm_kernel_irq_routing_entry {
unsigned pin;
} irqchip;
struct msi_msg msi;
struct kvm_s390_adapter_int adapter;
};
struct hlist_node link;
};