From nobody Fri Oct 2 03:58:48 2026 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6DF2E3F8EB3; Wed, 5 Aug 2026 09:49:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.156.1 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785923360; cv=none; b=FGlt5R3MqlZFUu3vz8GwxtajIrxRpiCA9mlRs6Lmm7g6bsly8f3qO6DoPDDreEwl7G5yDIHWxuLyhH8/BMlhSs05MUS8BCYhA/k2ULKHPF44VKyrIl4O4Jd45NafL9fkniQb+DTo/sSr8XlVD/itP0XPKrRlGY4QzySSEBUFCBs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785923360; c=relaxed/simple; bh=PYF3iNeENBdSaiAGyN6wQYwEL8sItA6lmOBg8rYNCMk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=qhdT1ZsfhBMyELZWE4YsNw400JGpAh2N3zHk0C78jsYY627TRDmZOLFQxyDImaapNwrzcGANYSmvEs3m9Dq3UOZiEzT5pa6GHqAxDMVM+O8NSMTM2cCVdUi6rySY8p3yoA4KV+zeDiBKwzyAO6/JDmjSgSKqHYdy1vWMVIM+iWo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=cfeXndAD; arc=none smtp.client-ip=148.163.156.1 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="cfeXndAD" Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6758liJ63354587; Wed, 5 Aug 2026 09:49:04 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=YgwZSW C2bLmMyDbaQo4SVNBWV5SCX4gDWVO4DIJgLiM=; b=cfeXndAD9DEnWCUja2qZbP /hI5fez+zEsytB3q9p0uFDrH4HXqiNd4b1ZTpi5N3IlwQh3ub+XdP4CYqnnFG5SX Q1iPn1eR8Ne9oBXSmfukBeduOdPjT2r+0ocNYATTOPtnYLAgSmov4E1ZWI4Zghs8 TL6jLsSXc01VK0r9cVO44xqSGewmjF5jBuZhkzcYpES9ixg1IhCKjeIJKOC4VwH6 RqV/v1zvEgEeogcC8ZMv3JiJRVD7G2tG5MkQVf4P1cL0mzv0djp8OL3K1GQHXBXO mW4234MQG4fq4vb3nm9PeGatXN0hv+PY3GmCTWKdMYtVgRUd9+z27Jw+eTkUXd8A == Received: from ppma22.wdc07v.mail.ibm.com (5c.69.3da9.ip4.static.sl-reverse.com [169.61.105.92]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4fs8a42drv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 Aug 2026 09:49:04 +0000 (GMT) Received: from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1]) by ppma22.wdc07v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 6759fLJm014396; Wed, 5 Aug 2026 09:49:03 GMT Received: from smtprelay04.fra02v.mail.ibm.com ([9.218.2.228]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4fsugw63br-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 Aug 2026 09:49:03 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay04.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6759mxwb15532414 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 5 Aug 2026 09:48:59 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0F5712004D; Wed, 5 Aug 2026 09:48:59 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D0A6D2004E; Wed, 5 Aug 2026 09:48:58 +0000 (GMT) Received: from [9.224.76.67] (unknown [9.224.76.67]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 5 Aug 2026 09:48:58 +0000 (GMT) From: Mete Durlu Date: Wed, 05 Aug 2026 11:48:36 +0200 Subject: [PATCH v4 1/3] panic: Introduce arch_do_panic Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260805-arch_do_panic-v4-1-af4a36f99414@linux.ibm.com> References: <20260805-arch_do_panic-v4-0-af4a36f99414@linux.ibm.com> In-Reply-To: <20260805-arch_do_panic-v4-0-af4a36f99414@linux.ibm.com> To: Andrew Morton , Petr Mladek , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , "David S. 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Pave the way for vpanic() cleanup. Reviewed-by: Bradley Morgan Suggested-by: Sven Schnelle Signed-off-by: Mete Durlu --- include/linux/panic.h | 2 ++ kernel/panic.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/include/linux/panic.h b/include/linux/panic.h index f1dd417e54b2..98dd7dfd27de 100644 --- a/include/linux/panic.h +++ b/include/linux/panic.h @@ -110,4 +110,6 @@ extern void add_taint(unsigned flag, enum lockdep_ok); extern int test_taint(unsigned flag); extern unsigned long get_taint(void); =20 +void arch_do_panic(void); + #endif /* _LINUX_PANIC_H */ diff --git a/kernel/panic.c b/kernel/panic.c index 213725b612aa..726a97842232 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -567,6 +567,8 @@ static void panic_other_cpus_shutdown(bool crash_kexec) crash_smp_send_stop(); } =20 +void __weak arch_do_panic(void) {} + /** * vpanic - halt the system * @fmt: The text string to print @@ -756,6 +758,7 @@ void vpanic(const char *fmt, va_list args) #endif pr_emerg("---[ end Kernel panic - not syncing: %s ]---\n", buf); 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Wed, 05 Aug 2026 09:49:02 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay04.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6759mxoE15532416 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 5 Aug 2026 09:48:59 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 41FA82004D; Wed, 5 Aug 2026 09:48:59 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1379E2004F; Wed, 5 Aug 2026 09:48:59 +0000 (GMT) Received: from [9.224.76.67] (unknown [9.224.76.67]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 5 Aug 2026 09:48:59 +0000 (GMT) From: Mete Durlu Date: Wed, 05 Aug 2026 11:48:37 +0200 Subject: [PATCH v4 2/3] s390: Implement arch_do_panic() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260805-arch_do_panic-v4-2-af4a36f99414@linux.ibm.com> References: <20260805-arch_do_panic-v4-0-af4a36f99414@linux.ibm.com> In-Reply-To: <20260805-arch_do_panic-v4-0-af4a36f99414@linux.ibm.com> To: Andrew Morton , Petr Mladek , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , "David S. 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No functional changes. Signed-off-by: Mete Durlu --- arch/s390/kernel/ipl.c | 6 ++++++ kernel/panic.c | 3 --- 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 3c346b02ceb9..31ff7c12c354 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -2343,6 +2344,11 @@ static struct notifier_block on_panic_nb =3D { .priority =3D INT_MIN, }; =20 +void arch_do_panic(void) +{ + disabled_wait(); +} + void __init setup_ipl(void) { BUILD_BUG_ON(sizeof(struct ipl_parameter_block) !=3D PAGE_SIZE); diff --git a/kernel/panic.c b/kernel/panic.c index 726a97842232..ee6e3f9e3900 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -752,9 +752,6 @@ void vpanic(const char *fmt, va_list args) pr_emerg("Press Stop-A (L1-A) from sun keyboard or send break\n" "twice on console to return to the boot prom\n"); } -#endif -#if defined(CONFIG_S390) - disabled_wait(); #endif pr_emerg("---[ end Kernel panic - not syncing: %s ]---\n", buf); 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Wed, 5 Aug 2026 09:48:59 +0000 (GMT) From: Mete Durlu Date: Wed, 05 Aug 2026 11:48:38 +0200 Subject: [PATCH v4 3/3] sparc: Implement arch_do_panic Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260805-arch_do_panic-v4-3-af4a36f99414@linux.ibm.com> References: <20260805-arch_do_panic-v4-0-af4a36f99414@linux.ibm.com> In-Reply-To: <20260805-arch_do_panic-v4-0-af4a36f99414@linux.ibm.com> To: Andrew Morton , Petr Mladek , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , "David S. Miller" , Andreas Larsson , Bradley Morgan Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, Mete Durlu X-Mailer: b4 0.14.3 X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYwODA1MDA3NyBTYWx0ZWRfX5oyVWSCyS4L6 NtxLLfTpkGKrqv6F9wliidw/6Yo6gK2kEDFrazdztmfRntZJtk13PxvsMTR2UGVc5QKt7ep8Zso 919y8Gh5jgxYh7nfBxAVrTcLobF2sw8= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA1MDA3NyBTYWx0ZWRfX/TNYVfwCON/q gW733BS7+G7OpetT+kRzbNUd0mQ0HbK/O48hPDxkuhIdHMTKZEGJ8Tae5brnX0ZTR7VKvrr/vOc EYcBSoLwucuLaPSJaqJkQIB1m64eDm3ZLcFy9Kh9Ej/01sdideFDTOw3wa0Iz7LMLqVbExx0AFX 7nAk0BdY8lRIMlwZp3gOnt1cNsW3e4P96kfWFdp8K1TKsC+QsZymz8NuZ2PuCmaNV59DJGmzZog OKsj5Z70igVRHtUs40SvStuMutOs6k2/X+oyhOmJz2nGYjbktyflQ13WVlNDJB8LVLm97ytr9Mu H3zbE+Qjl2Mx6sodX2IOk5erD1moWcr6eipGF3CtWli2uiL+WzqtIHEmPCJaJClsRkDLxTd3Lfd p+VZw49v0E1btiNSEy2sV74hQFFD5/8EnFhWiRZ02+GdHwWG+CNqcSy1j4GQLbWiWtGRY2CBCci wEl7W7eL1nmdA2+pXVw== X-Authority-Analysis: v=2.4 cv=SI1ykuvH c=1 sm=1 tr=0 ts=6a730710 cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=Iwkn-W_Q9BMZrAFg0pEA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-ORIG-GUID: socpUiEkEdUWPH4iJJGHP-H0BScl2WsQ X-Proofpoint-GUID: socpUiEkEdUWPH4iJJGHP-H0BScl2WsQ 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=2026-08-05_03,2026-08-04_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 bulkscore=0 suspectscore=0 impostorscore=0 spamscore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608050077 Implement sparc specific arch_do_panic() instead of using sparc specific ifdef sections in vpanic() code. Reorder arch specific panic handling, sparc's Stop-A messages are now printed after "end Kernel panic" marker. Signed-off-by: Mete Durlu --- arch/sparc/kernel/setup.c | 9 +++++++++ kernel/panic.c | 9 --------- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/sparc/kernel/setup.c b/arch/sparc/kernel/setup.c index 4975867d9001..5f43cef80638 100644 --- a/arch/sparc/kernel/setup.c +++ b/arch/sparc/kernel/setup.c @@ -2,6 +2,8 @@ =20 #include #include +#include +#include =20 static const struct ctl_table sparc_sysctl_table[] =3D { { @@ -36,6 +38,13 @@ static const struct ctl_table sparc_sysctl_table[] =3D { #endif }; =20 +void arch_do_panic(void) +{ + /* Make sure the user can actually press Stop-A (L1-A) */ + stop_a_enabled =3D 1; + pr_emerg("Press Stop-A (L1-A) from sun keyboard or send break\n" + "twice on console to return to the boot prom\n"); +} =20 static int __init init_sparc_sysctls(void) { diff --git a/kernel/panic.c b/kernel/panic.c index ee6e3f9e3900..7dda841c16f9 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -744,15 +744,6 @@ void vpanic(const char *fmt, va_list args) reboot_mode =3D panic_reboot_mode; emergency_restart(); } -#ifdef __sparc__ - { - extern int stop_a_enabled; - /* Make sure the user can actually press Stop-A (L1-A) */ - stop_a_enabled =3D 1; - pr_emerg("Press Stop-A (L1-A) from sun keyboard or send break\n" - "twice on console to return to the boot prom\n"); - } -#endif pr_emerg("---[ end Kernel panic - not syncing: %s ]---\n", buf); =20 arch_do_panic(); --=20 2.55.0