KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller

This patch makes KVM capable of using the XIVE interrupt controller
to provide the standard PAPR "XICS" style hypercalls. It is necessary
for proper operations when the host uses XIVE natively.

This has been lightly tested on an actual system, including PCI
pass-through with a TG3 device.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[mpe: Cleanup pr_xxx(), unsplit pr_xxx() strings, etc., fix build
 failures by adding KVM_XIVE which depends on KVM_XICS and XIVE, and
 adding empty stubs for the kvm_xive_xxx() routines, fixup subject,
 integrate fixes from Paul for building PR=y HV=n]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 2 insertions, 33 deletions

diff --git a/arch/powerpc/kvm/book3s_xics.c b/arch/powerpc/kvm/book3s_xics.c
index ef4fd528c193..e6829c415bc8 100644
--- a/arch/powerpc/kvm/book3s_xics.c
+++ b/arch/powerpc/kvm/book3s_xics.c
@@ -1307,8 +1307,8 @@ static int xics_set_source(struct kvmppc_xics *xics, long irq, u64 addr)
 	return 0;
 }
 
-int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
-		bool line_status)
+int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
+			bool line_status)
 {
 	struct kvmppc_xics *xics = kvm->arch.xics;
 
@@ -1317,14 +1317,6 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
 	return ics_deliver_irq(xics, irq, level);
 }
 
-int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry,
-			      struct kvm *kvm, int irq_source_id,
-			      int level, bool line_status)
-{
-	return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi,
-			   level, line_status);
-}
-
 static int xics_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
 {
 	struct kvmppc_xics *xics = dev->private;
@@ -1458,29 +1450,6 @@ void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu)
 	vcpu->arch.irq_type = KVMPPC_IRQ_DEFAULT;
 }
 
-static int xics_set_irq(struct kvm_kernel_irq_routing_entry *e,
-			struct kvm *kvm, int irq_source_id, int level,
-			bool line_status)
-{
-	return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status);
-}
-
-int kvm_irq_map_gsi(struct kvm *kvm,
-		    struct kvm_kernel_irq_routing_entry *entries, int gsi)
-{
-	entries->gsi = gsi;
-	entries->type = KVM_IRQ_ROUTING_IRQCHIP;
-	entries->set = xics_set_irq;
-	entries->irqchip.irqchip = 0;
-	entries->irqchip.pin = gsi;
-	return 1;
-}
-
-int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
-{
-	return pin;
-}
-
 void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long irq,
 			    unsigned long host_irq)
 {