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Mon, 12 Oct 2026 12:21:21 +0000 (GMT) Received: from osiris (unknown [9.111.15.154]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTPS; Mon, 12 Oct 2026 12:21:21 +0000 (GMT) Date: Mon, 12 Oct 2026 14:21:20 +0200 From: Heiko Carstens To: Ilya Leoshkevich Cc: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , Niklas Schnelle , Matthew Rosato , Gerald Schaefer , Vineeth Vijayan , Peter Oberparleiter , Harald Freudenberger , Holger Dengler , Stefan Haberland , Jan Hoeppner , Janosch Frank , Claudio Imbrenda , linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: Re: [PATCH 03/32] s390: Clear pt_regs flags field Message-ID: <20261012122120.19350Cf9-hca@linux.ibm.com> References: <20261001103247.1989111-1-hca@linux.ibm.com> <20261001103247.1989111-4-hca@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDEyMDA0OCBTYWx0ZWRfX8vzdGzHZuffs EQW8hLwUm7zCnPIp77wEBQExlJ21jRHsQhatfwHHGBS/mVM9Ta9O6l5Q9oSUJcXTmkF2ViqrSOU maG1aY2XFhiFtN8hpHWqIjbbUWnGuuE= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDEyMDA0OCBTYWx0ZWRfXytoIUlSlY4pf SfHZRhJxV2Ov+/i83OvQJjSvIsPuPP5bPT9Vjn8IAzHbasnT2bj5FhSLg40emhgnitq/ENl1Zs1 g73F3NAiMCURm5yxh7x4uMISziDd+nz9b7ZZnji7eS9lQoZZMZnDVgybNkl/71Hxp19TYel70Ts gXTx3N0waod/NpJZ8Kq95B+VbfmxlngAtogQicWtmSUhccWjGQfKUy1s8TnEXOKr9QlrKGO9Puz mlnCV0e5QRqD3Fkz6fgf+AhqXPzyMAZXBzz9duzCmVZ8FB5Lfc7nhYAiV4UWlv2/0jNAOlDcdv0 Z3Rr/M1/s0gamXWKj8i4MG6sH13Ptw+FumkwTOLzputPXYsKBYHufLP6rJRQVRC3y7UZGlj5R9H yk61WaYs9LMvTsCT/a9c08ohsilVeMM19FjoeApo6m1oioW3Q2A11UuQ1OCcNuw2qh0IDTUUA7j xUwlmo0ELTr/SmD92sA== X-Authority-Analysis: v=2.4 cv=E6pYNqdl c=1 sm=1 tr=0 ts=6accd0c6 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=kj9zAlcOel0A:10 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=e2fcsRMGdPZ525QvWPYA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: cUUOoFTsRPSsVt1iFbGwNkrgTxX4n-7I X-Proofpoint-GUID: cUUOoFTsRPSsVt1iFbGwNkrgTxX4n-7I X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-12_04,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 phishscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 spamscore=0 adultscore=0 suspectscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610120048 On Mon, Oct 12, 2026 at 02:15:39PM +0200, Ilya Leoshkevich wrote: > > diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c > > index 1fc153d8385b..b8e3c065fbec 100644 > > --- a/arch/s390/kernel/early.c > > +++ b/arch/s390/kernel/early.c > > @@ -154,6 +154,7 @@ void __init __do_early_pgm_check(struct pt_regs *regs) > > { > > struct lowcore *lc = get_lowcore(); > > + regs->flags = 0; > > regs->int_code = lc->pgm_int_code; > > regs->int_parm_long = lc->trans_exc_code; > > regs->last_break = lc->pgm_last_break; > > Just for my understanding, why can't we do it in C for all handlers? We could - it is handled inconsistently currently, and I used the existing pattern. This could be cleaned up as well across all exception handlers.