From 2bd67038f89e6400afcdbdc53ad1fde674a58195 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <hca@linux.ibm.com>
Date: Thu, 17 Jun 2021 20:30:15 +0200
Subject: [PATCH] s390/mm,pages-states: get rid of register asm
There is no reason to use fixed registers for the essa
instruction. Therefore remove the register asm construct.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
---
arch/s390/mm/page-states.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c
index 7f0e154a470ad..68b153083a921 100644
--- a/arch/s390/mm/page-states.c
+++ b/arch/s390/mm/page-states.c
@@ -31,17 +31,17 @@ __setup("cmma=", cmma);
static inline int cmma_test_essa(void)
{
- register unsigned long tmp asm("0") = 0;
- register int rc asm("1");
+ unsigned long tmp = 0;
+ int rc = -EOPNOTSUPP;
/* test ESSA_GET_STATE */
asm volatile(
- " .insn rrf,0xb9ab0000,%1,%1,%2,0\n"
- "0: la %0,0\n"
+ " .insn rrf,0xb9ab0000,%[tmp],%[tmp],%[cmd],0\n"
+ "0: la %[rc],0\n"
"1:\n"
EX_TABLE(0b,1b)
- : "=&d" (rc), "+&d" (tmp)
- : "i" (ESSA_GET_STATE), "0" (-EOPNOTSUPP));
+ : [rc] "+&d" (rc), [tmp] "+&d" (tmp)
+ : [cmd] "i" (ESSA_GET_STATE));
return rc;
}