diff --git a/Documentation/ABI/testing/sysfs-kernel-fadump b/Documentation/ABI/testing/sysfs-kernel-fadump
index 8f7a64a81783..c586054657d6 100644
--- a/Documentation/ABI/testing/sysfs-kernel-fadump
+++ b/Documentation/ABI/testing/sysfs-kernel-fadump
@@ -38,3 +38,14 @@ Contact:	linuxppc-dev@lists.ozlabs.org
 Description:	read only
 		Provide information about the amount of memory reserved by
 		FADump to save the crash dump in bytes.
+
+What:		/sys/kernel/fadump/hotplug_ready
+Date:		Apr 2024
+Contact:	linuxppc-dev@lists.ozlabs.org
+Description:	read only
+		Kdump udev rule re-registers fadump on memory add/remove events,
+		primarily to update the elfcorehdr. This sysfs indicates the
+		kdump udev rule that fadump re-registration is not required on
+		memory add/remove events because elfcorehdr is now prepared in
+		the second/fadump kernel.
+User:		kexec-tools
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index a020597c065a..2de7379d0f30 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -1426,6 +1426,18 @@ static ssize_t enabled_show(struct kobject *kobj,
 	return sprintf(buf, "%d\n", fw_dump.fadump_enabled);
 }
 
+/*
+ * /sys/kernel/fadump/hotplug_ready sysfs node returns 1, which inidcates
+ * to usersapce that fadump re-registration is not required on memory
+ * hotplug events.
+ */
+static ssize_t hotplug_ready_show(struct kobject *kobj,
+				      struct kobj_attribute *attr,
+				      char *buf)
+{
+	return sprintf(buf, "%d\n", 1);
+}
+
 static ssize_t mem_reserved_show(struct kobject *kobj,
 				 struct kobj_attribute *attr,
 				 char *buf)
@@ -1498,11 +1510,13 @@ static struct kobj_attribute release_attr = __ATTR_WO(release_mem);
 static struct kobj_attribute enable_attr = __ATTR_RO(enabled);
 static struct kobj_attribute register_attr = __ATTR_RW(registered);
 static struct kobj_attribute mem_reserved_attr = __ATTR_RO(mem_reserved);
+static struct kobj_attribute hotplug_ready_attr = __ATTR_RO(hotplug_ready);
 
 static struct attribute *fadump_attrs[] = {
 	&enable_attr.attr,
 	&register_attr.attr,
 	&mem_reserved_attr.attr,
+	&hotplug_ready_attr.attr,
 	NULL,
 };