From: Heiko Carstens <hca@linux.ibm.com>
Date: Mon, 28 Jun 2021 21:55:53 +0000 (+0200)
Subject: s390/lib,uaccess: fix copy_in_user_mvcos() inline asm clobber list
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=07f3a35df190082867fa302e46cab86d7a968ff3;p=linux.git

s390/lib,uaccess: fix copy_in_user_mvcos() inline asm clobber list

General register 0 is clobbered within the inline assembly and
therefore must be listed in the clobber list.

Fixes:  d1e18efa8fa9 ("s390/lib,uaccess: get rid of register asm")
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
---

diff --git a/arch/s390/lib/uaccess.c b/arch/s390/lib/uaccess.c
index 67606d932825b..7ec8b1fa0f089 100644
--- a/arch/s390/lib/uaccess.c
+++ b/arch/s390/lib/uaccess.c
@@ -224,7 +224,7 @@ static inline unsigned long copy_in_user_mvcos(void __user *to, const void __use
 		EX_TABLE(0b,3b)
 		: "+a" (size), "+a" (to), "+a" (from), "+a" (tmp1), "=a" (tmp2)
 		: [spec] "d" (0x810081UL)
-		: "cc", "memory");
+		: "cc", "memory", "0");
 	return size;
 }