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authorPaolo Bonzini <pbonzini@redhat.com>2015-10-28 19:16:47 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2015-11-04 16:24:35 +0100
commitb97e6de9c96cefaa02a6a7464731ea504b45e150 (patch)
treed6edce2dc3d5ceb7ccc5de818cb5761d5927ea6d /arch/x86/kvm/irq_comm.c
parent0669a51015c58b1f036030743a0c0781eb63867f (diff)
KVM: x86: merge kvm_arch_set_irq with kvm_set_msi_inatomic
We do not want to do too much work in atomic context, in particular not walking all the VCPUs of the virtual machine. So we want to distinguish the architecture-specific injection function for irqfd from kvm_set_msi. Since it's still empty, reuse the newly added kvm_arch_set_irq and rename it to kvm_arch_set_irq_inatomic. Reviewed-by: Radim Krčmář <rkrcmar@redhat.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.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 8f4499c7ffc1..75dc633c48dc 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -124,12 +124,16 @@ int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
}
-static int kvm_set_msi_inatomic(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm)
+int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e,
+ struct kvm *kvm, int irq_source_id, int level,
+ bool line_status)
{
struct kvm_lapic_irq irq;
int r;
+ if (unlikely(e->type != KVM_IRQ_ROUTING_MSI))
+ return -EWOULDBLOCK;
+
kvm_set_msi_irq(e, &irq);
if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r, NULL))
@@ -165,10 +169,8 @@ int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level)
idx = srcu_read_lock(&kvm->irq_srcu);
if (kvm_irq_map_gsi(kvm, entries, irq) > 0) {
e = &entries[0];
- if (likely(e->type == KVM_IRQ_ROUTING_MSI))
- ret = kvm_set_msi_inatomic(e, kvm);
- else
- ret = -EWOULDBLOCK;
+ ret = kvm_arch_set_irq_inatomic(e, kvm, irq_source_id,
+ irq, level);
}
srcu_read_unlock(&kvm->irq_srcu, idx);
return ret;