KVM: PPC: MPIC: Add support for KVM_IRQ_LINE

Now that all pieces are in place for reusing generic irq infrastructure,
we can copy x86's implementation of KVM_IRQ_LINE irq injection and simply
reuse it for PPC, as it will work there just as well.

Signed-off-by: Alexander Graf <agraf@suse.de>

2 files changed, 14 insertions, 0 deletions

diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h
index ca871067a69b..03c7819a44a3 100644
--- a/arch/powerpc/include/uapi/asm/kvm.h
+++ b/arch/powerpc/include/uapi/asm/kvm.h
@@ -26,6 +26,7 @@
 #define __KVM_HAVE_SPAPR_TCE
 #define __KVM_HAVE_PPC_SMT
 #define __KVM_HAVE_IRQCHIP
+#define __KVM_HAVE_IRQ_LINE
 
 struct kvm_regs {
         __u64 pc;
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 5d046bbdf11f..d8e81e6c1afe 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -33,6 +33,7 @@
 #include <asm/cputhreads.h>
 #include <asm/irqflags.h>
 #include "timing.h"
+#include "irq.h"
 #include "../mm/mmu_decl.h"
 
 #define CREATE_TRACE_POINTS
@@ -939,6 +940,18 @@ static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
         return 0;
 }
 
+int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
+                          bool line_status)
+{
+        if (!irqchip_in_kernel(kvm))
+                return -ENXIO;
+
+        irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
+                                        irq_event->irq, irq_event->level,
+                                        line_status);
+        return 0;
+}
+
 long kvm_arch_vm_ioctl(struct file *filp,
                        unsigned int ioctl, unsigned long arg)
 {