From patchwork Thu Nov 30 02:39:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baoquan He X-Patchwork-Id: 13474004 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="TpPg8/0q" Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BE003D7F for ; Wed, 29 Nov 2023 18:40:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1701312019; 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=7a7MvtTPLATTN5eKyPVfit7fm0+oApE3BiwQ+p89PGs=; b=TpPg8/0qdo+qshkDAd2Qb6uUDclsDn3/rrBpKCJOco+EXKvjH54qZb11NmwHoq3VduV/Oi oChkaHoIUd+wG0MYK2qPXC42bX2ZH6ml3BEdmld2JhEUmc8xkBrfzXqNYFiA8mDy7NFNxd VWY49uwMJe6OiFQ10mS1VsjJZpNl3T8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-266-29Nj_448PnC-Jj4xWyvDTw-1; Wed, 29 Nov 2023 21:40:16 -0500 X-MC-Unique: 29Nj_448PnC-Jj4xWyvDTw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (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 DCB75185A782; Thu, 30 Nov 2023 02:40:15 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.113.121]) by smtp.corp.redhat.com (Postfix) with ESMTP id D43C82026D4C; Thu, 30 Nov 2023 02:40:11 +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, linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, akpm@linux-foundation.org, joe@perches.com, nathan@kernel.org, Baoquan He Subject: [PATCH v3 3/7] kexec_file, x86: print out debugging message if required Date: Thu, 30 Nov 2023 10:39:51 +0800 Message-ID: <20231130023955.5257-4-bhe@redhat.com> In-Reply-To: <20231130023955.5257-1-bhe@redhat.com> References: <20231130023955.5257-1-bhe@redhat.com> Precedence: bulk X-Mailing-List: linux-parisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.4 Replace pr_debug() with the newly added kexec_dprintk() in kexec_file loading related codes. And also print out e820 memmap passed to 2nd kernel just as kexec_load interface has been doing. Signed-off-by: Baoquan He --- arch/x86/kernel/crash.c | 4 ++-- arch/x86/kernel/kexec-bzimage64.c | 23 ++++++++++++++--------- 2 files changed, 16 insertions(+), 11 deletions(-) diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index c92d88680dbf..1715e5f06a59 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -386,8 +386,8 @@ int crash_load_segments(struct kimage *image) if (ret) return ret; image->elf_load_addr = kbuf.mem; - pr_debug("Loaded ELF headers at 0x%lx bufsz=0x%lx memsz=0x%lx\n", - image->elf_load_addr, kbuf.bufsz, kbuf.memsz); + kexec_dprintk("Loaded ELF headers at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + image->elf_load_addr, kbuf.bufsz, kbuf.memsz); return ret; } diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c index a61c12c01270..e9ae0eac6bf9 100644 --- a/arch/x86/kernel/kexec-bzimage64.c +++ b/arch/x86/kernel/kexec-bzimage64.c @@ -82,7 +82,7 @@ static int setup_cmdline(struct kimage *image, struct boot_params *params, cmdline_ptr[cmdline_len - 1] = '\0'; - pr_debug("Final command line is: %s\n", cmdline_ptr); + kexec_dprintk("Final command line is: %s\n", cmdline_ptr); cmdline_ptr_phys = bootparams_load_addr + cmdline_offset; cmdline_low_32 = cmdline_ptr_phys & 0xffffffffUL; cmdline_ext_32 = cmdline_ptr_phys >> 32; @@ -272,7 +272,12 @@ setup_boot_parameters(struct kimage *image, struct boot_params *params, nr_e820_entries = params->e820_entries; + kexec_dprintk("E820 memmap:\n"); for (i = 0; i < nr_e820_entries; i++) { + kexec_dprintk("%016llx-%016llx (%d)\n", + params->e820_table[i].addr, + params->e820_table[i].addr + params->e820_table[i].size - 1, + params->e820_table[i].type); if (params->e820_table[i].type != E820_TYPE_RAM) continue; start = params->e820_table[i].addr; @@ -424,7 +429,7 @@ static void *bzImage64_load(struct kimage *image, char *kernel, * command line. Make sure it does not overflow */ if (cmdline_len + MAX_ELFCOREHDR_STR_LEN > header->cmdline_size) { - pr_debug("Appending elfcorehdr= to command line exceeds maximum allowed length\n"); + kexec_dprintk("Appending elfcorehdr= to command line exceeds maximum allowed length\n"); return ERR_PTR(-EINVAL); } @@ -445,7 +450,7 @@ static void *bzImage64_load(struct kimage *image, char *kernel, return ERR_PTR(ret); } - pr_debug("Loaded purgatory at 0x%lx\n", pbuf.mem); + kexec_dprintk("Loaded purgatory at 0x%lx\n", pbuf.mem); /* @@ -490,8 +495,8 @@ static void *bzImage64_load(struct kimage *image, char *kernel, if (ret) goto out_free_params; bootparam_load_addr = kbuf.mem; - pr_debug("Loaded boot_param, command line and misc at 0x%lx bufsz=0x%lx memsz=0x%lx\n", - bootparam_load_addr, kbuf.bufsz, kbuf.bufsz); + kexec_dprintk("Loaded boot_param, command line and misc at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + bootparam_load_addr, kbuf.bufsz, kbuf.bufsz); /* Load kernel */ kbuf.buffer = kernel + kern16_size; @@ -505,8 +510,8 @@ static void *bzImage64_load(struct kimage *image, char *kernel, goto out_free_params; kernel_load_addr = kbuf.mem; - pr_debug("Loaded 64bit kernel at 0x%lx bufsz=0x%lx memsz=0x%lx\n", - kernel_load_addr, kbuf.bufsz, kbuf.memsz); + kexec_dprintk("Loaded 64bit kernel at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + kernel_load_addr, kbuf.bufsz, kbuf.memsz); /* Load initrd high */ if (initrd) { @@ -520,8 +525,8 @@ static void *bzImage64_load(struct kimage *image, char *kernel, goto out_free_params; initrd_load_addr = kbuf.mem; - pr_debug("Loaded initrd at 0x%lx bufsz=0x%lx memsz=0x%lx\n", - initrd_load_addr, initrd_len, initrd_len); + kexec_dprintk("Loaded initrd at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + initrd_load_addr, initrd_len, initrd_len); setup_initrd(params, initrd_load_addr, initrd_len); }