From: Heiko Carstens <hca@linux.ibm.com>
Date: Fri, 19 Jan 2024 11:19:30 +0000 (+0100)
Subject: s390/cmf: fix virtual vs physical address confusion
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=14edd0d73bfef320fd5be11495687ba537aa6341;p=linux.git

s390/cmf: fix virtual vs physical address confusion

The measurement block origin address is an absolute address; therefore
add a missing virt_to_phys() translation to the cmf_activate() inline
assembly.

This doesn't fix a bug, since virtual and physical addresses are
currently identical.

Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Acked-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---

diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c
index 6a6e61ceb3c19..f80dc18e2a761 100644
--- a/drivers/s390/cio/cmf.c
+++ b/drivers/s390/cio/cmf.c
@@ -169,7 +169,8 @@ static inline void cmf_activate(void *area, unsigned int onoff)
 		"	lgr	2,%[mbo]\n"
 		"	schm\n"
 		:
-		: [r1] "d" ((unsigned long)onoff), [mbo] "d" (area)
+		: [r1] "d" ((unsigned long)onoff),
+		  [mbo] "d" (virt_to_phys(area))
 		: "1", "2");
 }