KVM: Move arm64's MMU notifier trace events to generic code

Move arm64's MMU notifier trace events into common code in preparation
for doing the hva->gfn lookup in common code. The alternative would be
to trace the gfn instead of hva, but that's not obviously better and
could also be done in common code. Tracing the notifiers is also quite
handy for debug regardless of architecture.

Remove a completely redundant tracepoint from PPC e500.

Signed-off-by: Sean Christopherson <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Paolo Bonzini <[e-mail]>

arch/arm64/kvm/mmu.c

···
 	if (!kvm->arch.mmu.pgt)
 		return 0;
 
-	trace_kvm_unmap_hva_range(start, end);
 	handle_hva_to_gpa(kvm, start, end, &kvm_unmap_hva_handler, &flags);
 	return 0;
 }
···
 
 	if (!kvm->arch.mmu.pgt)
 		return 0;
-
-	trace_kvm_set_spte_hva(hva);
 
 	/*
 	 * We've moved a page around, probably through CoW, so let's treat it
···
 {
 	if (!kvm->arch.mmu.pgt)
 		return 0;
-	trace_kvm_age_hva(start, end);
+
 	return handle_hva_to_gpa(kvm, start, end, kvm_age_hva_handler, NULL);
 }
 
···
 {
 	if (!kvm->arch.mmu.pgt)
 		return 0;
-	trace_kvm_test_age_hva(hva);
+
 	return handle_hva_to_gpa(kvm, hva, hva + PAGE_SIZE,
 				 kvm_test_age_hva_handler, NULL);
 }

arch/arm64/kvm/trace_arm.h

···
 		  __entry->vcpu_pc, __entry->instr, __entry->cpsr)
 );
 
-TRACE_EVENT(kvm_unmap_hva_range,
-	TP_PROTO(unsigned long start, unsigned long end),
-	TP_ARGS(start, end),
-
-	TP_STRUCT__entry(
-		__field(	unsigned long,	start		)
-		__field(	unsigned long,	end		)
-	),
-
-	TP_fast_assign(
-		__entry->start		= start;
-		__entry->end		= end;
-	),
-
-	TP_printk("mmu notifier unmap range: %#016lx -- %#016lx",
-		  __entry->start, __entry->end)
-);
-
-TRACE_EVENT(kvm_set_spte_hva,
-	TP_PROTO(unsigned long hva),
-	TP_ARGS(hva),
-
-	TP_STRUCT__entry(
-		__field(	unsigned long,	hva		)
-	),
-
-	TP_fast_assign(
-		__entry->hva		= hva;
-	),
-
-	TP_printk("mmu notifier set pte hva: %#016lx", __entry->hva)
-);
-
-TRACE_EVENT(kvm_age_hva,
-	TP_PROTO(unsigned long start, unsigned long end),
-	TP_ARGS(start, end),
-
-	TP_STRUCT__entry(
-		__field(	unsigned long,	start		)
-		__field(	unsigned long,	end		)
-	),
-
-	TP_fast_assign(
-		__entry->start		= start;
-		__entry->end		= end;
-	),
-
-	TP_printk("mmu notifier age hva: %#016lx -- %#016lx",
-		  __entry->start, __entry->end)
-);
-
-TRACE_EVENT(kvm_test_age_hva,
-	TP_PROTO(unsigned long hva),
-	TP_ARGS(hva),
-
-	TP_STRUCT__entry(
-		__field(	unsigned long,	hva		)
-	),
-
-	TP_fast_assign(
-		__entry->hva		= hva;
-	),
-
-	TP_printk("mmu notifier test age hva: %#016lx", __entry->hva)
-);
-
 TRACE_EVENT(kvm_set_way_flush,
 	    TP_PROTO(unsigned long vcpu_pc, bool cache),
 	    TP_ARGS(vcpu_pc, cache),

arch/powerpc/kvm/e500_mmu_host.c

···
 
 static int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
 {
-	trace_kvm_unmap_hva(hva);
-
 	/*
 	 * Flush all shadow tlb entries everywhere. This is slow, but
 	 * we are 100% sure that we catch the to be unmapped page

arch/powerpc/kvm/trace_booke.h

···
 		)
 );
 
-TRACE_EVENT(kvm_unmap_hva,
-	TP_PROTO(unsigned long hva),
-	TP_ARGS(hva),
-
-	TP_STRUCT__entry(
-		__field(	unsigned long,	hva		)
-	),
-
-	TP_fast_assign(
-		__entry->hva		= hva;
-	),
-
-	TP_printk("unmap hva 0x%lx\n", __entry->hva)
-);
-
 TRACE_EVENT(kvm_booke206_stlb_write,
 	TP_PROTO(__u32 mas0, __u32 mas8, __u32 mas1, __u64 mas2, __u64 mas7_3),
 	TP_ARGS(mas0, mas8, mas1, mas2, mas7_3),

include/trace/events/kvm.h

···
 	TP_printk("vcpu %d", __entry->vcpu_id)
 );
 
+TRACE_EVENT(kvm_unmap_hva_range,
+	TP_PROTO(unsigned long start, unsigned long end),
+	TP_ARGS(start, end),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	start		)
+		__field(	unsigned long,	end		)
+	),
+
+	TP_fast_assign(
+		__entry->start		= start;
+		__entry->end		= end;
+	),
+
+	TP_printk("mmu notifier unmap range: %#016lx -- %#016lx",
+		  __entry->start, __entry->end)
+);
+
+TRACE_EVENT(kvm_set_spte_hva,
+	TP_PROTO(unsigned long hva),
+	TP_ARGS(hva),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	hva		)
+	),
+
+	TP_fast_assign(
+		__entry->hva		= hva;
+	),
+
+	TP_printk("mmu notifier set pte hva: %#016lx", __entry->hva)
+);
+
+TRACE_EVENT(kvm_age_hva,
+	TP_PROTO(unsigned long start, unsigned long end),
+	TP_ARGS(start, end),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	start		)
+		__field(	unsigned long,	end		)
+	),
+
+	TP_fast_assign(
+		__entry->start		= start;
+		__entry->end		= end;
+	),
+
+	TP_printk("mmu notifier age hva: %#016lx -- %#016lx",
+		  __entry->start, __entry->end)
+);
+
+TRACE_EVENT(kvm_test_age_hva,
+	TP_PROTO(unsigned long hva),
+	TP_ARGS(hva),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	hva		)
+	),
+
+	TP_fast_assign(
+		__entry->hva		= hva;
+	),
+
+	TP_printk("mmu notifier test age hva: %#016lx", __entry->hva)
+);
+
 #endif /* _TRACE_KVM_MAIN_H */
 
 /* This part must be outside protection */

virt/kvm/kvm_main.c

···
 	struct kvm *kvm = mmu_notifier_to_kvm(mn);
 	int idx;
 
+	trace_kvm_set_spte_hva(address);
+
 	idx = srcu_read_lock(&kvm->srcu);
 
 	KVM_MMU_LOCK(kvm);
···
 {
 	struct kvm *kvm = mmu_notifier_to_kvm(mn);
 	int need_tlb_flush = 0, idx;
+
+	trace_kvm_unmap_hva_range(range->start, range->end);
 
 	idx = srcu_read_lock(&kvm->srcu);
 	KVM_MMU_LOCK(kvm);
···
 	struct kvm *kvm = mmu_notifier_to_kvm(mn);
 	int young, idx;
 
+	trace_kvm_age_hva(start, end);
+
 	idx = srcu_read_lock(&kvm->srcu);
 	KVM_MMU_LOCK(kvm);
 
···
 {
 	struct kvm *kvm = mmu_notifier_to_kvm(mn);
 	int young, idx;
+
+	trace_kvm_age_hva(start, end);
 
 	idx = srcu_read_lock(&kvm->srcu);
 	KVM_MMU_LOCK(kvm);
···
 {
 	struct kvm *kvm = mmu_notifier_to_kvm(mn);
 	int young, idx;
+
+	trace_kvm_test_age_hva(address);
 
 	idx = srcu_read_lock(&kvm->srcu);
 	KVM_MMU_LOCK(kvm);