All of lore.kernel.org
 help / color / mirror / Atom feed
From: Heiko Carstens <hca@linux.ibm.com>
To: Vasily Gorbik <gor@linux.ibm.com>,
	Alexander Gordeev <agordeev@linux.ibm.com>,
	Jonas Paulsson <paulsson@linux.vnet.ibm.com>,
	Ulrich Weigand <ulrich.weigand@de.ibm.com>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Alexander Egorenkov <egorenar@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>,
	Andreas Krebbel <krebbel@linux.ibm.com>,
	Nathan Chancellor <natechancellor@gmail.com>,
	Nick Desaulniers <ndesaulniers@google.com>,
	linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Subject: [PATCH 7/8] s390/boot: do not emit debug info for assembly with llvm's IAS
Date: Wed, 11 May 2022 14:05:31 +0200	[thread overview]
Message-ID: <20220511120532.2228616-8-hca@linux.ibm.com> (raw)
In-Reply-To: <20220511120532.2228616-1-hca@linux.ibm.com>

Commit ee6d777d3e93 ("s390/decompressor: support extra debug flags")
added extra debug flags, in particular debug info is created,
depending on config options.

With llvm's IAS this causes this compile warning:

arch/s390/boot/head.S:38:1: warning: DWARF2 only supports one section per compilation unit
.section ".head.text","ax"
^

This is a known problem and was addressed with a commit b8a9092330da
("Kbuild: do not emit debug info for assembly with LLVM_IAS=1").
Just do the same for s390 to get rid of this warning.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
 arch/s390/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index c59efc83f020..d73611b35164 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -20,7 +20,9 @@ LDFLAGS_vmlinux	:= -pie
 endif
 aflags_dwarf	:= -Wa,-gdwarf-2
 KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__
+ifndef CONFIG_AS_IS_LLVM
 KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf))
+endif
 KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack
 KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY
 KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain
-- 
2.32.0


  parent reply	other threads:[~2022-05-11 12:08 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-11 12:05 [PATCH 0/8] s390: allow to build with llvm's integrated assembler Heiko Carstens
2022-05-11 12:05 ` [PATCH 1/8] s390/alternatives: provide identical sized orginal/alternative sequences Heiko Carstens
2022-05-13  9:17   ` Vasily Gorbik
2022-05-11 12:05 ` [PATCH 2/8] s390/alternatives: remove padding generation code Heiko Carstens
2022-05-11 17:02   ` Heiko Carstens
2022-05-13  9:18   ` Vasily Gorbik
2022-05-11 12:05 ` [PATCH 3/8] s390/entry: shorten OUTSIDE macro Heiko Carstens
2022-05-12 15:59   ` kernel test robot
2022-05-12 16:20   ` kernel test robot
2022-05-12 17:21   ` Heiko Carstens
2022-05-12 18:00     ` Nick Desaulniers
2022-05-12 19:15       ` Heiko Carstens
2022-05-12 19:25         ` Nick Desaulniers
2022-05-13 12:29           ` Heiko Carstens
2022-05-11 12:05 ` [PATCH 4/8] s390/entry: workaround llvm's IAS limitations Heiko Carstens
2022-05-11 17:30   ` Nathan Chancellor
2022-05-12 17:24     ` Heiko Carstens
2022-05-12 19:06       ` Nathan Chancellor
2022-05-12 19:16         ` Heiko Carstens
2022-05-16  9:07       ` Alexander Gordeev
2022-05-16 10:19         ` Heiko Carstens
2022-05-16 10:42           ` Jonas Paulsson
2022-05-16 11:11           ` Alexander Gordeev
2022-05-16 14:05             ` Heiko Carstens
2022-05-11 12:05 ` [PATCH 5/8] s390/purgatory: " Heiko Carstens
2022-05-11 19:54   ` Nick Desaulniers
2022-05-12 17:26     ` Heiko Carstens
2022-05-12 17:25   ` Heiko Carstens
2022-05-11 12:05 ` [PATCH 6/8] s390/boot: workaround llvm IAS bug Heiko Carstens
2022-05-11 19:50   ` Nick Desaulniers
2022-05-11 12:05 ` Heiko Carstens [this message]
2022-05-11 19:40   ` [PATCH 7/8] s390/boot: do not emit debug info for assembly with llvm's IAS Nick Desaulniers
2022-05-12 17:30     ` Heiko Carstens
2022-05-11 12:05 ` [PATCH 8/8] scripts/min-tool-version.sh: raise minimum clang version to 14.0.0 for s390 Heiko Carstens
2022-05-11 19:27   ` Nick Desaulniers
2022-05-11 19:56     ` Nick Desaulniers
2022-05-12 19:06       ` Heiko Carstens
2022-05-11 19:48 ` [PATCH 0/8] s390: allow to build with llvm's integrated assembler Nick Desaulniers
2022-05-12 19:04   ` Heiko Carstens
2022-05-11 20:52 ` Nathan Chancellor
2022-05-12 19:03   ` Heiko Carstens

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=20220511120532.2228616-8-hca@linux.ibm.com \
    --to=hca@linux.ibm.com \
    --cc=agordeev@linux.ibm.com \
    --cc=egorenar@linux.ibm.com \
    --cc=gor@linux.ibm.com \
    --cc=krebbel@linux.ibm.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-s390@vger.kernel.org \
    --cc=masahiroy@kernel.org \
    --cc=natechancellor@gmail.com \
    --cc=ndesaulniers@google.com \
    --cc=paulsson@linux.vnet.ibm.com \
    --cc=svens@linux.ibm.com \
    --cc=ulrich.weigand@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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.