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Tue, 9 Dec 2025 12:17:01 +0000 (GMT) From: Heiko Carstens To: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , Peter Zijlstra , Mark Rutland , Arnd Bergmann , Jens Remus , Stefan Schulze Frielinghaus , Juergen Christ Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH 1/9] kbuild: Require gcc-9 for s390 Date: Tue, 9 Dec 2025 13:16:53 +0100 Message-ID: <20251209121701.1856271-2-hca@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251209121701.1856271-1-hca@linux.ibm.com> References: <20251209121701.1856271-1-hca@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjA2MDAyMCBTYWx0ZWRfXwcaxYXPyPApc gGHNb+ZaNvu5GnlHZSRWJjqhAHrUuQ4h4aNiU9PsdN0FQcBmN9jFGPaOSSLrA8aY7YhEIZVZWI+ zOTeVtu8byepM4kPPppcprNuYocVGqVtJh5KJBA1BkBJRHoRMdjSLag6u6E4o4cwj4z40lq0J5S pQ2BQDxvkZ1W64JzXrqAMngR10TJwXHuzhNlhp3i5mycFbjcMMws0kErUOPUfygYT0Y9/O+JGkQ sjzXUNv25e6mJACg6b7XXkZqkipqhyjpdsvVNWUG4wVbpC3863c9p1kZMQcyI8IOa5i1Z2fCaK1 yP96zpRVXI62iNnph6cO5di4GYkmS5fjUOtQJQqBWTigk44BSJPmb2IQTQvUHBUZ4agHTa5jfzs Ed3j/5SC8f0vcig4O/wZo+6SuaDD3A== X-Authority-Analysis: v=2.4 cv=S/DUAYsP c=1 sm=1 tr=0 ts=69381342 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=wP3pNCr1ah4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=TbMndkmT-6wVJWDlugAA:9 X-Proofpoint-ORIG-GUID: UW3ngKb1Qw9RbMlqlnABqvUqEtwoCqB_ X-Proofpoint-GUID: UW3ngKb1Qw9RbMlqlnABqvUqEtwoCqB_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-09_02,2025-12-04_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 clxscore=1015 impostorscore=0 suspectscore=0 lowpriorityscore=0 adultscore=0 spamscore=0 bulkscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2512060020 Content-Type: text/plain; charset="utf-8" Upcoming changes to s390 specific inline assemblies require the usage of strings as immediate input operands. This works only with gcc-9 and newer compilers. With gcc-8 this leads to a compile error: void bar(void) { asm volatile("" :: "i" ("foo")); } Results in: In function 'bar': warning: asm operand 0 probably doesn't match constraints asm volatile("" :: "i" ("foo")); ^~~ error: impossible constraint in 'asm' Bump the minimal gcc version from gcc-8 to gcc-9 for s390 to solve this problem. Signed-off-by: Heiko Carstens --- scripts/min-tool-version.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/scripts/min-tool-version.sh b/scripts/min-tool-version.sh index 99b5575c1ef7..1cacd389f29b 100755 --- a/scripts/min-tool-version.sh +++ b/scripts/min-tool-version.sh @@ -19,6 +19,8 @@ binutils) gcc) if [ "$ARCH" =3D parisc64 ]; then echo 12.0.0 + elif [ "$ARCH" =3D s390 ]; then + echo 9.1.0 else echo 8.1.0 fi --=20 2.51.0