From: Arnd Bergmann <arnd@arndb.de>
To: Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: clang-built-linux@googlegroups.com,
Nick Desaulniers <ndesaulniers@google.com>,
Nathan Chancellor <natechancellor@gmail.com>,
linux-s390@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Vasily Gorbik <gor@linux.ibm.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 12/12] [PROBABLY WRONG] s390: void '0' constraint in inline assembly
Date: Mon, 8 Apr 2019 23:26:25 +0200 [thread overview]
Message-ID: <20190408212648.2407234-12-arnd@arndb.de> (raw)
In-Reply-To: <20190408212648.2407234-1-arnd@arndb.de>
clang does not understand the contraint "0" in the CALL_ON_STACK()
macro:
../arch/s390/mm/maccess.c:117:10: error: invalid input constraint '0' in asm
return CALL_ON_STACK(_memcpy_real, S390_lowcore.nodat_stack,
^
../arch/s390/include/asm/processor.h:292:20: note: expanded from macro 'CALL_ON_STACK'
[_fn] "X" (fn) CALL_FMT_##nr : CALL_CLOBBER_##nr); \
^
<scratch space>:207:1: note: expanded from here
CALL_FMT_3
^
../arch/s390/include/asm/processor.h:267:20: note: expanded from macro 'CALL_FMT_3'
#define CALL_FMT_3 CALL_FMT_2, "d" (r4)
^
../arch/s390/include/asm/processor.h:266:20: note: expanded from macro 'CALL_FMT_2'
#define CALL_FMT_2 CALL_FMT_1, "d" (r3)
^
../arch/s390/include/asm/processor.h:265:32: note: expanded from macro 'CALL_FMT_1'
#define CALL_FMT_1 CALL_FMT_0, "0" (r2)
^
I don't know what the correct fix here would be, changing it to "d" made
it build, since clang does understand this one.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/s390/include/asm/processor.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 700c650ffd4f..84c59c99668a 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -262,7 +262,7 @@ static __no_kasan_or_inline unsigned short stap(void)
register unsigned long r4 asm("6") = (unsigned long)(arg5)
#define CALL_FMT_0
-#define CALL_FMT_1 CALL_FMT_0, "0" (r2)
+#define CALL_FMT_1 CALL_FMT_0, "d" (r2)
#define CALL_FMT_2 CALL_FMT_1, "d" (r3)
#define CALL_FMT_3 CALL_FMT_2, "d" (r4)
#define CALL_FMT_4 CALL_FMT_3, "d" (r5)
--
2.20.0
next prev parent reply other threads:[~2019-04-08 21:26 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-08 21:26 [PATCH 01/12] s390: remove -fno-strength-reduce flag Arnd Bergmann
2019-04-08 21:26 ` [PATCH 02/12] s390: don't build vdso32 with clang Arnd Bergmann
2019-04-10 15:57 ` Martin Schwidefsky
2019-04-10 16:26 ` Nick Desaulniers
2019-04-10 19:00 ` Arnd Bergmann
2019-04-08 21:26 ` [PATCH 03/12] s390: purgatory: pass --target option to clang Arnd Bergmann
2019-04-08 22:03 ` Nathan Chancellor
2019-04-09 6:43 ` Arnd Bergmann
2019-04-09 16:30 ` Nathan Chancellor
2019-04-09 18:11 ` Nick Desaulniers
2019-04-08 21:26 ` [PATCH 04/12] s390: qeth: address type mismatch warning Arnd Bergmann
2019-04-08 22:16 ` Nathan Chancellor
2019-04-09 6:44 ` Arnd Bergmann
2019-04-10 15:58 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 05/12] s390: zcrypt: initialize variables before_use Arnd Bergmann
2019-04-08 22:31 ` Nathan Chancellor
2019-04-09 9:54 ` Harald Freudenberger
2019-04-09 10:13 ` Arnd Bergmann
2019-04-10 15:59 ` Martin Schwidefsky
2019-04-10 18:57 ` Arnd Bergmann
2019-04-11 7:40 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 06/12] s390: ctcm: fix ctcm_new_device error return code Arnd Bergmann
2019-04-08 22:33 ` Nathan Chancellor
2019-04-10 16:00 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 07/12] s390: cio: fix cio_irb declaration Arnd Bergmann
2019-04-08 22:35 ` Nathan Chancellor
2019-04-09 13:13 ` Sebastian Ott
2019-04-08 21:26 ` [PATCH 08/12] s390: syscall_wrapper: avoid clang warning Arnd Bergmann
2019-04-10 16:00 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 09/12] s390: make __load_psw_mask work with clang Arnd Bergmann
2019-04-10 16:01 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 10/12] s390: avoid __builtin_return_address(n) on clang Arnd Bergmann
2019-04-10 16:03 ` Martin Schwidefsky
2019-04-10 16:14 ` Steven Rostedt
2019-04-10 19:07 ` Arnd Bergmann
2019-04-11 7:32 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 11/12] s390: make chkbss work with clang Arnd Bergmann
2019-04-10 16:02 ` Martin Schwidefsky
2019-04-08 21:26 ` Arnd Bergmann [this message]
2019-04-10 13:55 ` [PATCH 12/12] [PROBABLY WRONG] s390: void '0' constraint in inline assembly Martin Schwidefsky
2019-04-10 16:35 ` Nick Desaulniers
2019-04-10 18:55 ` Arnd Bergmann
2019-04-10 15:57 ` [PATCH 01/12] s390: remove -fno-strength-reduce flag Martin Schwidefsky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190408212648.2407234-12-arnd@arndb.de \
--to=arnd@arndb.de \
--cc=clang-built-linux@googlegroups.com \
--cc=gor@linux.ibm.com \
--cc=heiko.carstens@de.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=natechancellor@gmail.com \
--cc=ndesaulniers@google.com \
--cc=schwidefsky@de.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox