From patchwork Fri Jan 19 14:52:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baoquan He X-Patchwork-Id: 13523925 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EE023C4725D for ; Fri, 19 Jan 2024 14:55:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bVgdjr0YxSUyB8NqwgPRVh5ozxRCZo5NXzTXflk/Jpk=; b=kMaUqYoYyEwg80 mPpvXOIKmtKqaaP5rM4dcsDtDQTxr62twqMMjQI1oc8MaO41GPhfaXzC0tCDPZVipqOnriW690Lze xxHe/ToGchFdMa3RVsuLzkyBDuRztHLzSVwcSfix5uaLB3ZSjs2Iiddq0+m3igDibpv1gvTfUbDOc v5WwNOI9xjevk15nnVTZMJ9xP9mo9N/T/oJw4QzqPw2qPZ6aC9P9KCrc+xnJQn2FjCLehlP9dnIuQ 9DlUqrlO3RL/zosxxOr2uwHghzLWTXixza4ZNTUdSqRA9ytch0kOI0dyAZuJHlRWPozhKzouGyqBE Q10/29E4/nRfJxI1TxlQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rQqH6-005urz-0H; Fri, 19 Jan 2024 14:55:16 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rQqGx-005ujC-1c for linux-arm-kernel@lists.infradead.org; Fri, 19 Jan 2024 14:55:12 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1705676106; 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=mXutH6nMiiYvXWsHK3Zzjdb+v7CRXJKap85iSD6yYuk=; b=hA4R7Ik9uVbYSLrxm88n7drW9s+LaVUAC9VhqzKBelo2DOXHqhpSTQb/d1DbbTECSlXnWa Z6G4uYVUpFko19CVYF+ibeW14Rs0pnoGrzlDHFW1StJyd/8ltVwENTXRQ1k3QxDMplQeO0 tNrc5Pax0IS8pOlwRojMkEsv3Gin6Ho= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-158-srDGVP4bO42I1nCXCEQh-w-1; Fri, 19 Jan 2024 09:53:40 -0500 X-MC-Unique: srDGVP4bO42I1nCXCEQh-w-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (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 mimecast-mx02.redhat.com (Postfix) with ESMTPS id E88D729AA385; Fri, 19 Jan 2024 14:53:39 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.116.4]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4F8A05012; Fri, 19 Jan 2024 14:53:33 +0000 (UTC) From: Baoquan He To: linux-kernel@vger.kernel.org Cc: kexec@lists.infradead.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, Baoquan He Subject: [PATCH v2 06/14] x86, crash: wrap crash dumping code into crash related ifdefs Date: Fri, 19 Jan 2024 22:52:33 +0800 Message-ID: <20240119145241.769622-7-bhe@redhat.com> In-Reply-To: <20240119145241.769622-1-bhe@redhat.com> References: <20240119145241.769622-1-bhe@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.5 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240119_065507_731627_AB3D5B5F X-CRM114-Status: GOOD ( 17.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now crash codes under kernel/ folder has been split out from kexec code, crash dumping can be separated from kexec reboot in config items on x86 with some adjustments. Here, also change some ifdefs or IS_ENABLED() check to more appropriate ones, e,g - #ifdef CONFIG_KEXEC_CORE -> #ifdef CONFIG_CRASH_DUMP - (!IS_ENABLED(CONFIG_KEXEC_CORE)) - > (!IS_ENABLED(CONFIG_CRASH_RESERVE)) Signed-off-by: Baoquan He --- arch/x86/kernel/Makefile | 4 ++-- arch/x86/kernel/cpu/mshyperv.c | 4 ++++ arch/x86/kernel/kexec-bzimage64.c | 4 ++++ arch/x86/kernel/kvm.c | 4 ++-- arch/x86/kernel/machine_kexec_64.c | 3 +++ arch/x86/kernel/reboot.c | 2 +- arch/x86/kernel/setup.c | 2 +- arch/x86/kernel/smp.c | 2 +- arch/x86/xen/enlighten_hvm.c | 4 ++++ 9 files changed, 22 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 913d4022131e..3668b1edef2d 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -100,9 +100,9 @@ obj-$(CONFIG_TRACING) += trace.o obj-$(CONFIG_RETHOOK) += rethook.o obj-$(CONFIG_VMCORE_INFO) += vmcore_info_$(BITS).o obj-$(CONFIG_KEXEC_CORE) += machine_kexec_$(BITS).o -obj-$(CONFIG_KEXEC_CORE) += relocate_kernel_$(BITS).o crash.o +obj-$(CONFIG_KEXEC_CORE) += relocate_kernel_$(BITS).o obj-$(CONFIG_KEXEC_FILE) += kexec-bzimage64.o -obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o +obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o crash.o obj-y += kprobes/ obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_X86_32) += doublefault_32.o diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 01fa06dd06b6..f8163a59026b 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -210,6 +210,7 @@ static void hv_machine_shutdown(void) hyperv_cleanup(); } +#ifdef CONFIG_CRASH_DUMP static void hv_machine_crash_shutdown(struct pt_regs *regs) { if (hv_crash_handler) @@ -221,6 +222,7 @@ static void hv_machine_crash_shutdown(struct pt_regs *regs) /* Disable the hypercall page when there is only 1 active CPU. */ hyperv_cleanup(); } +#endif #endif /* CONFIG_KEXEC_CORE */ #endif /* CONFIG_HYPERV */ @@ -497,7 +499,9 @@ static void __init ms_hyperv_init_platform(void) #if IS_ENABLED(CONFIG_HYPERV) && defined(CONFIG_KEXEC_CORE) machine_ops.shutdown = hv_machine_shutdown; +#ifdef CONFIG_CRASH_DUMP machine_ops.crash_shutdown = hv_machine_crash_shutdown; +#endif #endif if (ms_hyperv.features & HV_ACCESS_TSC_INVARIANT) { /* diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c index 2a422e00ed4b..b55737b83a84 100644 --- a/arch/x86/kernel/kexec-bzimage64.c +++ b/arch/x86/kernel/kexec-bzimage64.c @@ -263,11 +263,13 @@ setup_boot_parameters(struct kimage *image, struct boot_params *params, memset(¶ms->hd0_info, 0, sizeof(params->hd0_info)); memset(¶ms->hd1_info, 0, sizeof(params->hd1_info)); +#ifdef CONFIG_CRASH_DUMP if (image->type == KEXEC_TYPE_CRASH) { ret = crash_setup_memmap_entries(image, params); if (ret) return ret; } else +#endif setup_e820_entries(params); nr_e820_entries = params->e820_entries; @@ -433,12 +435,14 @@ static void *bzImage64_load(struct kimage *image, char *kernel, return ERR_PTR(-EINVAL); } +#ifdef CONFIG_CRASH_DUMP /* Allocate and load backup region */ if (image->type == KEXEC_TYPE_CRASH) { ret = crash_load_segments(image); if (ret) return ERR_PTR(ret); } +#endif /* * Load purgatory. For 64bit entry point, purgatory code can be diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index dfe9945b9bec..acfc2d3183bc 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -769,7 +769,7 @@ static struct notifier_block kvm_pv_reboot_nb = { * won't be valid. In cases like kexec, in which you install a new kernel, this * means a random memory location will be kept being written. */ -#ifdef CONFIG_KEXEC_CORE +#ifdef CONFIG_CRASH_DUMP static void kvm_crash_shutdown(struct pt_regs *regs) { kvm_guest_cpu_offline(true); @@ -852,7 +852,7 @@ static void __init kvm_guest_init(void) kvm_guest_cpu_init(); #endif -#ifdef CONFIG_KEXEC_CORE +#ifdef CONFIG_CRASH_DUMP machine_ops.crash_shutdown = kvm_crash_shutdown; #endif diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index bc0a5348b4a6..b180d8e497c3 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -508,6 +508,8 @@ int arch_kimage_file_post_load_cleanup(struct kimage *image) } #endif /* CONFIG_KEXEC_FILE */ +#ifdef CONFIG_CRASH_DUMP + static int kexec_mark_range(unsigned long start, unsigned long end, bool protect) { @@ -552,6 +554,7 @@ void arch_kexec_unprotect_crashkres(void) { kexec_mark_crashkres(false); } +#endif /* * During a traditional boot under SME, SME will encrypt the kernel, diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 830425e6d38e..1287b0d5962f 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -796,7 +796,7 @@ struct machine_ops machine_ops __ro_after_init = { .emergency_restart = native_machine_emergency_restart, .restart = native_machine_restart, .halt = native_machine_halt, -#ifdef CONFIG_KEXEC_CORE +#ifdef CONFIG_CRASH_DUMP .crash_shutdown = native_machine_crash_shutdown, #endif }; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 84201071dfac..899d839a2954 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -471,7 +471,7 @@ static void __init arch_reserve_crashkernel(void) bool high = false; int ret; - if (!IS_ENABLED(CONFIG_KEXEC_CORE)) + if (!IS_ENABLED(CONFIG_CRASH_RESERVE)) return; ret = parse_crashkernel(cmdline, memblock_phys_mem_size(), diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c index 96a771f9f930..52c3823b7211 100644 --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -282,7 +282,7 @@ struct smp_ops smp_ops = { .smp_cpus_done = native_smp_cpus_done, .stop_other_cpus = native_stop_other_cpus, -#if defined(CONFIG_KEXEC_CORE) +#if defined(CONFIG_CRASH_DUMP) .crash_stop_other_cpus = kdump_nmi_shootdown_cpus, #endif .smp_send_reschedule = native_smp_send_reschedule, diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c index 3f8c34707c50..09e3db7ff990 100644 --- a/arch/x86/xen/enlighten_hvm.c +++ b/arch/x86/xen/enlighten_hvm.c @@ -149,12 +149,14 @@ static void xen_hvm_shutdown(void) xen_reboot(SHUTDOWN_soft_reset); } +#ifdef CONFIG_CRASH_DUMP static void xen_hvm_crash_shutdown(struct pt_regs *regs) { native_machine_crash_shutdown(regs); xen_reboot(SHUTDOWN_soft_reset); } #endif +#endif static int xen_cpu_up_prepare_hvm(unsigned int cpu) { @@ -236,8 +238,10 @@ static void __init xen_hvm_guest_init(void) #ifdef CONFIG_KEXEC_CORE machine_ops.shutdown = xen_hvm_shutdown; +#ifdef CONFIG_CRASH_DUMP machine_ops.crash_shutdown = xen_hvm_crash_shutdown; #endif +#endif } static __init int xen_parse_nopv(char *arg)