From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 857DB17997 for ; Fri, 23 Aug 2024 01:59:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724378351; cv=none; b=oidzosVnOfuBhqxTRlXr1/l2uY+nrGX0ThqSWnzONfjVhzX5cg/de3SFXZybODvllrUI8WNZnQ+uHs9K1IOhuzLruUUtZKThV8YdQ6/Nmfbug3MupbnAQdkpUsWNEwrP/wEomdxqWODAci8eyUH5Y3+TlEJnQmOM+/IxvAl/kZE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724378351; c=relaxed/simple; bh=KAOIasN/hhonSibrWmd5NGn4sRRLCj6E3rhDNzfzvcs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=YGLi0gM9HWOkMKnRfvCOV3aFoLMfMkYDDIMhMPXxe/xDxZ4tTDrsFg9ZmfbCzQNZ7jlWCHqcHcRZ/tqJz4x3+S/3Z/tRTnxGEPDhlnkAwCvme2nWkNcQajR117+xMF9creFJMV0MpaqSP2ErhX4BguJx69rPyPDlTO44sByL+6s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=KGOXU824; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="KGOXU824" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1724378347; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vptUsTTd+Ahgj+G0OF7GYw9gEl0AVQwqRfpIh4Og1O8=; b=KGOXU824SOWQsqUyLRZDd0Gj/91XKTkHBpHIMY3m+YcnSxmWKrv9sqvszT5eABzdZEsjrl X+M51IFFxtAG/3mwY2z3/h3+ikR+m0lYtCf4V6C4vYntUg/hDBxpvkXmB83wi9U6qiDm0r sSrw53PhDDGa+Efr01LQh28tLrhOaZU= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-691-soz-U4RROwaHLeJV3p9How-1; Thu, 22 Aug 2024 21:59:02 -0400 X-MC-Unique: soz-U4RROwaHLeJV3p9How-1 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 4E6A61955D45; Fri, 23 Aug 2024 01:58:58 +0000 (UTC) Received: from localhost (unknown [10.72.112.51]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2E2AD1956053; Fri, 23 Aug 2024 01:58:54 +0000 (UTC) Date: Fri, 23 Aug 2024 09:58:49 +0800 From: Baoquan He To: Dave Vasilevsky Cc: John Paul Adrian Glaubitz , linux-kernel@vger.kernel.org, Michael Ellerman , kexec@lists.infradead.org, debian-powerpc@lists.debian.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-mips@vger.kernel.org, linux-riscv@lists.infradead.org, loongarch@lists.linux.dev, akpm@linux-foundation.org, ebiederm@xmission.com, hbathini@linux.ibm.com, piliu@redhat.com, viro@zeniv.linux.org.uk, Sam James Subject: Re: [PATCH linux-next v3 05/14] crash: clean up kdump related config items Message-ID: References: <20240124051254.67105-1-bhe@redhat.com> <20240124051254.67105-6-bhe@redhat.com> <768dfe3e-c437-40cc-96a5-6c5b34b2d19d@vasilevsky.ca> Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <768dfe3e-c437-40cc-96a5-6c5b34b2d19d@vasilevsky.ca> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 On 08/22/24 at 08:41pm, Dave Vasilevsky wrote: > On 2024-08-22 20:04, Baoquan He wrote: > > If so, below patch possiblly can fix it. Can you help check if it's OK? > > That removes the possibility of enabling CRASH_DUMP on PPC_BOOK3S_32, even when booting via other mechanisms. Maybe it would be best to just make it not-default? Please take a look at this patch: > This is a good mimic of ARCH_DEFAULT_KEXEC_IMAGE_VERIFY_SIG and the correspondent KEXEC_IMAGE_VERIFY_SIG. It looks good to me, as long as no one complain we introduce too many knobs. Can you post this formally so that people can review it? > > From d6e5fe3a45f46f1aa01914648c443291d956de9e Mon Sep 17 00:00:00 2001 > From: Dave Vasilevsky > Date: Thu, 22 Aug 2024 20:13:46 -0400 > Subject: [PATCH] powerpc: Default to CRASH_DUMP=n when Open Firmware boot is > likely > MIME-Version: 1.0 > Content-Type: text/plain; charset=UTF-8 > Content-Transfer-Encoding: 8bit > > Open Firmware is unable to boot a kernel where PHYSICAL_START is > non-zero, which occurs when CRASH_DUMP is on. > > On PPC_BOOK3S_32, the most common way of booting is Open Firmware, so > most users probably don't want CRASH_DUMP. Users booting via some > other mechanism can turn it on explicitly. > > Signed-off-by: Dave Vasilevsky > Reported-by: Reimar Döffinger > Fixes: 75bc255a7444 > --- > arch/arm/Kconfig | 3 +++ > arch/arm64/Kconfig | 3 +++ > arch/loongarch/Kconfig | 3 +++ > arch/mips/Kconfig | 3 +++ > arch/powerpc/Kconfig | 4 ++++ > arch/riscv/Kconfig | 3 +++ > arch/s390/Kconfig | 3 +++ > arch/sh/Kconfig | 3 +++ > arch/x86/Kconfig | 3 +++ > kernel/Kconfig.kexec | 2 +- > 10 files changed, 29 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index 54b2bb817a7f..200995052690 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -1597,6 +1597,9 @@ config ATAGS_PROC > config ARCH_SUPPORTS_CRASH_DUMP > def_bool y > > +config ARCH_DEFAULT_CRASH_DUMP > + def_bool y > + > config AUTO_ZRELADDR > bool "Auto calculation of the decompressed kernel image address" if !ARCH_MULTIPLATFORM > default !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100) > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index a2f8ff354ca6..43e08cc8204f 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -1558,6 +1558,9 @@ config ARCH_DEFAULT_KEXEC_IMAGE_VERIFY_SIG > config ARCH_SUPPORTS_CRASH_DUMP > def_bool y > > +config ARCH_DEFAULT_CRASH_DUMP > + def_bool y > + > config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION > def_bool CRASH_RESERVE > > diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig > index 70f169210b52..ce232ddcd27d 100644 > --- a/arch/loongarch/Kconfig > +++ b/arch/loongarch/Kconfig > @@ -599,6 +599,9 @@ config ARCH_SUPPORTS_KEXEC > config ARCH_SUPPORTS_CRASH_DUMP > def_bool y > > +config ARCH_DEFAULT_CRASH_DUMP > + def_bool y > + > config ARCH_SELECTS_CRASH_DUMP > def_bool y > depends on CRASH_DUMP > diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig > index 60077e576935..b547f4304d0c 100644 > --- a/arch/mips/Kconfig > +++ b/arch/mips/Kconfig > @@ -2881,6 +2881,9 @@ config ARCH_SUPPORTS_KEXEC > config ARCH_SUPPORTS_CRASH_DUMP > def_bool y > > +config ARCH_DEFAULT_CRASH_DUMP > + def_bool y > + > config PHYSICAL_START > hex "Physical address where the kernel is loaded" > default "0xffffffff84000000" > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig > index d7b09b064a8a..0f3c1f958eac 100644 > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -682,6 +682,10 @@ config RELOCATABLE_TEST > config ARCH_SUPPORTS_CRASH_DUMP > def_bool PPC64 || PPC_BOOK3S_32 || PPC_85xx || (44x && !SMP) > > +config ARCH_DEFAULT_CRASH_DUMP > + bool > + default y if !PPC_BOOK3S_32 > + > config ARCH_SELECTS_CRASH_DUMP > def_bool y > depends on CRASH_DUMP > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index 0f3cd7c3a436..eb247b5ee569 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -880,6 +880,9 @@ config ARCH_SUPPORTS_KEXEC_PURGATORY > config ARCH_SUPPORTS_CRASH_DUMP > def_bool y > > +config ARCH_DEFAULT_CRASH_DUMP > + def_bool y > + > config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION > def_bool CRASH_RESERVE > > diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig > index a822f952f64a..05a1fb408471 100644 > --- a/arch/s390/Kconfig > +++ b/arch/s390/Kconfig > @@ -275,6 +275,9 @@ config ARCH_SUPPORTS_CRASH_DUMP > This option also enables s390 zfcpdump. > See also > > +config ARCH_DEFAULT_CRASH_DUMP > + def_bool y > + > menu "Processor type and features" > > config HAVE_MARCH_Z10_FEATURES > diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig > index 1aa3c4a0c5b2..3a6338962636 100644 > --- a/arch/sh/Kconfig > +++ b/arch/sh/Kconfig > @@ -549,6 +549,9 @@ config ARCH_SUPPORTS_KEXEC > config ARCH_SUPPORTS_CRASH_DUMP > def_bool BROKEN_ON_SMP > > +config ARCH_DEFAULT_CRASH_DUMP > + def_bool y > + > config ARCH_SUPPORTS_KEXEC_JUMP > def_bool y > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 007bab9f2a0e..aa4666bb9e9c 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -2087,6 +2087,9 @@ config ARCH_SUPPORTS_KEXEC_JUMP > config ARCH_SUPPORTS_CRASH_DUMP > def_bool X86_64 || (X86_32 && HIGHMEM) > > +config ARCH_DEFAULT_CRASH_DUMP > + def_bool y > + > config ARCH_SUPPORTS_CRASH_HOTPLUG > def_bool y > > diff --git a/kernel/Kconfig.kexec b/kernel/Kconfig.kexec > index 6c34e63c88ff..4d111f871951 100644 > --- a/kernel/Kconfig.kexec > +++ b/kernel/Kconfig.kexec > @@ -97,7 +97,7 @@ config KEXEC_JUMP > > config CRASH_DUMP > bool "kernel crash dumps" > - default y > + default ARCH_DEFAULT_CRASH_DUMP > depends on ARCH_SUPPORTS_CRASH_DUMP > depends on KEXEC_CORE > select VMCORE_INFO > -- > 2.34.1 >