diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index 55a4996d0c04..2c70cd35e72c 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -781,6 +781,7 @@ void xen_mm_pin_all(void)
 {
 	struct page *page;
 
+	spin_lock(&init_mm.page_table_lock);
 	spin_lock(&pgd_lock);
 
 	list_for_each_entry(page, &pgd_list, lru) {
@@ -791,6 +792,7 @@ void xen_mm_pin_all(void)
 	}
 
 	spin_unlock(&pgd_lock);
+	spin_unlock(&init_mm.page_table_lock);
 }
 
 static void __init xen_mark_pinned(struct mm_struct *mm, struct page *page,
@@ -887,6 +889,7 @@ void xen_mm_unpin_all(void)
 {
 	struct page *page;
 
+	spin_lock(&init_mm.page_table_lock);
 	spin_lock(&pgd_lock);
 
 	list_for_each_entry(page, &pgd_list, lru) {
@@ -898,6 +901,7 @@ void xen_mm_unpin_all(void)
 	}
 
 	spin_unlock(&pgd_lock);
+	spin_unlock(&init_mm.page_table_lock);
 }
 
 static void xen_enter_mmap(struct mm_struct *mm)
diff --git a/drivers/xen/pcpu.c b/drivers/xen/pcpu.c
index c63f317e3df3..093ad4a08672 100644
--- a/drivers/xen/pcpu.c
+++ b/drivers/xen/pcpu.c
@@ -105,7 +105,7 @@ static ssize_t online_show(struct device *dev,
 	return sprintf(buf, "%u\n", !!(cpu->flags & XEN_PCPU_FLAGS_ONLINE));
 }
 
-static ssize_t __ref online_store(struct device *dev,
+static ssize_t online_store(struct device *dev,
 				  struct device_attribute *attr,
 				  const char *buf, size_t count)
 {
diff --git a/drivers/xen/pvcalls-front.c b/drivers/xen/pvcalls-front.c
index b72ee9379d77..4926d4badc57 100644
--- a/drivers/xen/pvcalls-front.c
+++ b/drivers/xen/pvcalls-front.c
@@ -341,6 +341,7 @@ int pvcalls_front_socket(struct socket *sock)
 	pvcalls_exit();
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_socket);
 
 static void free_active_ring(struct sock_mapping *map)
 {
@@ -486,6 +487,7 @@ int pvcalls_front_connect(struct socket *sock, struct sockaddr *addr,
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_connect);
 
 static int __write_ring(struct pvcalls_data_intf *intf,
 			struct pvcalls_data *data,
@@ -581,6 +583,7 @@ int pvcalls_front_sendmsg(struct socket *sock, struct msghdr *msg,
 	pvcalls_exit_sock(sock);
 	return tot_sent;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_sendmsg);
 
 static int __read_ring(struct pvcalls_data_intf *intf,
 		       struct pvcalls_data *data,
@@ -666,6 +669,7 @@ int pvcalls_front_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_recvmsg);
 
 int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
 {
@@ -719,6 +723,7 @@ int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
 	pvcalls_exit_sock(sock);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_bind);
 
 int pvcalls_front_listen(struct socket *sock, int backlog)
 {
@@ -768,8 +773,10 @@ int pvcalls_front_listen(struct socket *sock, int backlog)
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_listen);
 
-int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
+int pvcalls_front_accept(struct socket *sock, struct socket *newsock,
+			 struct proto_accept_arg *arg)
 {
 	struct pvcalls_bedata *bedata;
 	struct sock_mapping *map;
@@ -788,7 +795,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
 		return -EINVAL;
 	}
 
-	nonblock = flags & SOCK_NONBLOCK;
+	nonblock = arg->flags & SOCK_NONBLOCK;
 	/*
 	 * Backend only supports 1 inflight accept request, will return
 	 * errors for the others
@@ -904,6 +911,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_accept);
 
 static __poll_t pvcalls_front_poll_passive(struct file *file,
 					       struct pvcalls_bedata *bedata,
@@ -1004,6 +1012,7 @@ __poll_t pvcalls_front_poll(struct file *file, struct socket *sock,
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_poll);
 
 int pvcalls_front_release(struct socket *sock)
 {
@@ -1087,6 +1096,7 @@ int pvcalls_front_release(struct socket *sock)
 	pvcalls_exit();
 	return 0;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_release);
 
 static const struct xenbus_device_id pvcalls_front_ids[] = {
 	{ "pvcalls" },
diff --git a/drivers/xen/pvcalls-front.h b/drivers/xen/pvcalls-front.h
index f694ad77379f..881ef14660bc 100644
--- a/drivers/xen/pvcalls-front.h
+++ b/drivers/xen/pvcalls-front.h
@@ -12,7 +12,7 @@ int pvcalls_front_bind(struct socket *sock,
 int pvcalls_front_listen(struct socket *sock, int backlog);
 int pvcalls_front_accept(struct socket *sock,
 			 struct socket *newsock,
-			 int flags);
+			 struct proto_accept_arg *arg);
 int pvcalls_front_sendmsg(struct socket *sock,
 			  struct msghdr *msg,
 			  size_t len);