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Thu, 17 Jun 2021 14:55:45 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 04E684C052; Thu, 17 Jun 2021 14:55:45 +0000 (GMT) Received: from osiris (unknown [9.145.177.22]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Thu, 17 Jun 2021 14:55:44 +0000 (GMT) Date: Thu, 17 Jun 2021 16:55:43 +0200 From: Heiko Carstens To: Naresh Kamboju Cc: Linux-Next Mailing List , clang-built-linux , lkft-triage@lists.linaro.org, open list , Nick Desaulniers , Nathan Chancellor , Arnd Bergmann , Stephen Rothwell , Vasily Gorbik Subject: Re: [next] [clang] s390: clang: error: unable to execute command: Segmentation fault (core dumped) Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: WBdfFuvlbg97OnFmhWMVfxvlf1l2TOe7 X-Proofpoint-GUID: xsoFTxNvHHuKnwov2YPuHH_-U_2djiiw X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-06-17_10:2021-06-15,2021-06-17 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1011 impostorscore=0 mlxscore=0 suspectscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 spamscore=0 adultscore=0 mlxlogscore=999 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2106170092 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 17, 2021 at 06:19:14PM +0530, Naresh Kamboju wrote: > The git bisect found the first bad commit, > The first bad commit: > commit 3abbdfde5a6588a92209cd8b131769b8058e7c21 > Author: Heiko Carstens > Date: Wed Jun 9 22:59:13 2021 +0200 > s390/bitops: use register pair instead of register asm > > Get rid of register asm statement and use a register pair. > This allows the compiler to allocate registers on its own. > > Signed-off-by: Heiko Carstens > Signed-off-by: Vasily Gorbik > arch/s390/include/asm/bitops.h | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) > Previous HEAD position was 3abbdfde5a65 s390/bitops: use register pair > instead of register asm > HEAD is now at 7d9c6b8147bd Add linux-next specific files for 20210617 You need clang-13 development version which contains commit d058262b1471 ("[SystemZ] Support i128 inline asm operands."). Every older clang version won't be able to complile the kernel for s390 anymore. This is intended and won't be fixed.