From nobody Tue Sep 29 09:08:37 2026 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (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 20CA73A59A3; Mon, 10 Aug 2026 11:37:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786361863; cv=none; b=TitBxQGfEeEKi9sSB+zKnuUwqgfCHEB2esFwf0hG98Hf1td5/9JEbfnf1Qo4EAzrtKZXeaDN9HJO7WRzWGeAxx+ddAO6ylrRrhH6cVsW6XXa/olQsJNDsJ8QPt6xCh7NApb/NTDVVR8C7+UvuItluaBjXEStht7uhPpfPTNpivs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786361863; c=relaxed/simple; bh=PYF3iNeENBdSaiAGyN6wQYwEL8sItA6lmOBg8rYNCMk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=hGQ47TMVN2CewX/TGEz51E4fcAKBAp6x2j11UOC3Oxxby7AErXH2cbFfyFUp+fe9oG2u1B9PBUyUbQa7Ve4u5xgZ1seD6cdVmlbWjler3AEYFkKx7o6n2xhhuyhZnM5VcCBHhdpZiGxpZ/TAl3JvNjXZ3ZPXa/2xAo2A4z+1+yc= 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=YM86ADVY; arc=none smtp.client-ip=148.163.158.5 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="YM86ADVY" Received: from pps.filterd (m0360072.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 67A9Wi741291990; Mon, 10 Aug 2026 11:37:28 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=YM86ADVYOoinEp595lpJf9 ksnXcNJhIgKM/R/on2nOilmVucy9im2M94ZR4mnrna0Ixhv8wiDJ2Mh5o7tJYrnI E9H2RixFyJLeNnFFD6AAGFLrpezm5rvstVoNNIEtzIfM9HArNte6qECOV34ZgRVE 06Jd+SdvOTqKhfb0dvLc7nb91YLeZkRU5F9PAG6fivxYV/FimtGBNjEbdVYXm01T nXtbCiaIv67v9p0IjLJ7WJDP5Vw3vrJZWSTcZMcArFMNrDo0bNMkjPv/WWyGnsKr AjjzhkDJxNs1cALesQeXi86KYc3nUGiyI45Ezxh8C+KQIIem+Kx9vE2pKxSSt5Mw == 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 4fwvnvyauw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 10 Aug 2026 11:37:28 +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 67ABQQFn003959; Mon, 10 Aug 2026 11:37:27 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4fxf5vvpcm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 10 Aug 2026 11:37:27 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 67ABbNA739453118 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 10 Aug 2026 11:37:23 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6F0612004B; Mon, 10 Aug 2026 11:37:23 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0D83C2004D; Mon, 10 Aug 2026 11:37:23 +0000 (GMT) Received: from [192.168.2.127] (unknown [9.111.54.108]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 10 Aug 2026 11:37:22 +0000 (GMT) From: Mete Durlu Date: Mon, 10 Aug 2026 13:35:56 +0200 Subject: [PATCH v5 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: <20260810-arch_do_panic-v5-1-e86ae992c253@linux.ibm.com> References: <20260810-arch_do_panic-v5-0-e86ae992c253@linux.ibm.com> In-Reply-To: <20260810-arch_do_panic-v5-0-e86ae992c253@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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Mon, 10 Aug 2026 11:37:28 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 67ABbNkn41943456 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 10 Aug 2026 11:37:24 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DBE752004B; Mon, 10 Aug 2026 11:37:23 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7AC032004E; Mon, 10 Aug 2026 11:37:23 +0000 (GMT) Received: from [192.168.2.127] (unknown [9.111.54.108]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 10 Aug 2026 11:37:23 +0000 (GMT) From: Mete Durlu Date: Mon, 10 Aug 2026 13:35:57 +0200 Subject: [PATCH v5 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: <20260810-arch_do_panic-v5-2-e86ae992c253@linux.ibm.com> References: <20260810-arch_do_panic-v5-0-e86ae992c253@linux.ibm.com> In-Reply-To: <20260810-arch_do_panic-v5-0-e86ae992c253@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 Acked-by: Heiko Carstens Reviewed-by: Bradley Morgan --- arch/s390/kernel/traps.c | 7 +++++++ kernel/panic.c | 3 --- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index 564403496a7c..309d3d3e95fd 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -31,6 +32,7 @@ #include #include #include +#include #include "entry.h" =20 static inline void __user *get_trap_ip(struct pt_regs *regs) @@ -275,6 +277,11 @@ static void monitor_event_exception(struct pt_regs *re= gs) } } =20 +void arch_do_panic(void) +{ + disabled_wait(); +} + void kernel_stack_invalid(struct pt_regs *regs) { /* 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"); 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260810-arch_do_panic-v5-3-e86ae992c253@linux.ibm.com> References: <20260810-arch_do_panic-v5-0-e86ae992c253@linux.ibm.com> In-Reply-To: <20260810-arch_do_panic-v5-0-e86ae992c253@linux.ibm.com> To: Andrew Morton , Petr Mladek , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , "David S. 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Reorder arch specific panic handling, sparc's Stop-A messages are now printed after "end Kernel panic" marker. Signed-off-by: Mete Durlu Reviewed-by: Bradley Morgan --- 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