From 92d191de9ea16ce48adf99da62398ff2fd2eb698 Mon Sep 17 00:00:00 2001
From: Balazs Gerofi <bgerofi@riken.jp>
Date: Fri, 6 Mar 2020 18:35:31 +0900
Subject: [PATCH] xpmem: handle size 0xffffffffffffffff

Change-Id: I04fbe21966f8a831337576a14119afefe8a2ea4f
---
 kernel/xpmem.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/xpmem.c b/kernel/xpmem.c
index dafd17f2..5d32c196 100644
--- a/kernel/xpmem.c
+++ b/kernel/xpmem.c
@@ -451,7 +451,9 @@ static int xpmem_make(
 	 * The start of the segment must be page aligned and it must be a
 	 * multiple of pages in size.
 	 */
-	if (offset_in_page(vaddr) != 0 || offset_in_page(size) != 0) {
+	if (offset_in_page(vaddr) != 0 ||
+			/* Special treatment of -1UL */
+			(offset_in_page(size) != 0 && size != 0xffffffffffffffff)) {
 		xpmem_tg_deref(seg_tg);
 		XPMEM_DEBUG("return: ret=%d", -EINVAL);
 		return -EINVAL;