diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
index 8fff5b40a592..adab27b92311 100644
--- a/tools/testing/selftests/kvm/include/kvm_util.h
+++ b/tools/testing/selftests/kvm/include/kvm_util.h
@@ -14,6 +14,7 @@
 #include <linux/kvm.h>
 #include "linux/rbtree.h"
 #include <linux/types.h>
+#include <unistd.h>
 
 #include <asm/atomic.h>
 #include <asm/kvm.h>
@@ -1054,6 +1055,22 @@ const char *exit_reason_str(unsigned int exit_reason);
 
 bool kvm_arch_needs_naturally_aligned_page_tables(void);
 
+/*
+ * True on powerpc when this host is a pseries LPAR (nested case).
+ * PowerPC's PAPR L0 does not guarantee H_GUEST_CREATE / H_GUEST_CREATE_VCPU up
+ * to MAX_VCPUS or creating hundreds of VMs - due to limited resouces at L0 for
+ * guest management space. This helper allows us to skip such tests when we are
+ * running nested.
+ */
+static inline bool kvm_is_ppc_pseries_lpar(void)
+{
+#ifdef __powerpc64__
+	return !access("/proc/device-tree/rtas/ibm,hypertas-functions", F_OK);
+#else
+	return false;
+#endif
+}
+
 gpa_t ____vm_phy_pages_alloc(struct kvm_vm *vm, size_t nr_pages, gpa_t min_gpa,
 			     u32 memslot, bool protected, bool naturally_aligned);
 gpa_t __vm_phy_pages_alloc(struct kvm_vm *vm, size_t nr_pages,