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authorSteve Rutherford <srutherford@google.com>2015-07-29 23:21:40 -0700
committerPaolo Bonzini <pbonzini@redhat.com>2015-10-01 15:06:26 +0200
commit49df6397edfc5a8ba8ca813b51fb9729d8e94b40 (patch)
treeb5cb29a28fff01c9c85c4f02961164532fa241b2 /arch/x86/kvm/irq_comm.c
parent4ca7dd8ce4b24e18f94eed90e80c6eb80fb48c9a (diff)
downloadblackbird-op-linux-49df6397edfc5a8ba8ca813b51fb9729d8e94b40.tar.gz
blackbird-op-linux-49df6397edfc5a8ba8ca813b51fb9729d8e94b40.zip
KVM: x86: Split the APIC from the rest of IRQCHIP.
First patch in a series which enables the relocation of the PIC/IOAPIC to userspace. Adds capability KVM_CAP_SPLIT_IRQCHIP; KVM_CAP_SPLIT_IRQCHIP enables the construction of LAPICs without the rest of the irqchip. Compile tested for x86. Signed-off-by: Steve Rutherford <srutherford@google.com> Suggested-by: Andrew Honig <ahonig@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/irq_comm.c')
-rw-r--r--arch/x86/kvm/irq_comm.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 9efff9e5b58c..67f6b62a6814 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -208,7 +208,7 @@ void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id)
goto unlock;
}
clear_bit(irq_source_id, &kvm->arch.irq_sources_bitmap);
- if (!irqchip_in_kernel(kvm))
+ if (!ioapic_in_kernel(kvm))
goto unlock;
kvm_ioapic_clear_all(kvm->arch.vioapic, irq_source_id);
@@ -328,3 +328,10 @@ int kvm_setup_default_irq_routing(struct kvm *kvm)
return kvm_set_irq_routing(kvm, default_routing,
ARRAY_SIZE(default_routing), 0);
}
+
+static const struct kvm_irq_routing_entry empty_routing[] = {};
+
+int kvm_setup_empty_irq_routing(struct kvm *kvm)
+{
+ return kvm_set_irq_routing(kvm, empty_routing, 0, 0);
+}
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