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[2001:1868:205::9]) by mx.google.com with ESMTPS id 26si9371376pgy.294.2016.12.27.20.38.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Dec 2016 20:38:18 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org; spf=pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) smtp.mailfrom=linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org; dmarc=fail (p=NONE dis=NONE) header.from=linaro.org Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1cM5zH-0006QA-OU; Wed, 28 Dec 2016 04:37:15 +0000 Received: from mail-pf0-x22d.google.com ([2607:f8b0:400e:c00::22d]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1cM5yc-0005xM-As for linux-arm-kernel@lists.infradead.org; Wed, 28 Dec 2016 04:36:36 +0000 Received: by mail-pf0-x22d.google.com with SMTP id d2so57162537pfd.0 for ; Tue, 27 Dec 2016 20:36:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Bo8D/+0ALAIBcWIbvh4mzxcEnuJ/CqpSvJ6zvCaa10Y=; b=WebD+qDyUICSmAJrZvLuLxQ8/2rxb8fXaYdzAGZJ6abZbtO1EHwIodSk2xXQGXMR/+ bwlQV5qFLgURBroKFwBLIDsEz4p2ArWSW4dMo1i1XIiq7OGmGchAXHiALHBMUtM4SmSS +LBfKP9abVameNiXsf3eZrB6ORt/Be2i8BPm8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Bo8D/+0ALAIBcWIbvh4mzxcEnuJ/CqpSvJ6zvCaa10Y=; b=AqRXi7UvdtZlu3vzS44fpSdXUzoIwRYgHDpLVk4qd31qCYmHdNzBkLDvX2NwFklUhk 6a2iaGw87z0+KfkKJ2uYNTBqe/rHZ4mNYNZR8IL1YMTbvGIQanY9bHzTm5bxbik2af2v 6aVP/PmVXBHx/+Da3PLelKRxmoKC4BcPob8q2zdAIZAe3B5AMyVDmPd5uxII009YPXzn QhHlYB1LDv0VSarVXOmySVxRWbElVUl2FCgnV+4Pnha7Ku5gCBnRWcMUs9LWTgW+YMID Z7cMA1cytXqxRTLOdbyBfs4O21FBRY23UnSgQkk9SMoCJ41mFA8O6Qhlu2dcON5jMzEf maIA== X-Gm-Message-State: AIkVDXKrrAlEd3NN3xikVywokyG1/y45JHHKDjgM8eXacYRCR5Tpn2/QEyLA+TUGRC9TOT01 X-Received: by 10.84.218.11 with SMTP id q11mr73512349pli.138.1482899773324; Tue, 27 Dec 2016 20:36:13 -0800 (PST) Received: from linaro.org ([121.95.100.191]) by smtp.googlemail.com with ESMTPSA id a68sm93563750pgc.31.2016.12.27.20.36.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Dec 2016 20:36:12 -0800 (PST) From: AKASHI Takahiro To: catalin.marinas@arm.com, will.deacon@arm.com Subject: [PATCH v29 5/9] arm64: kdump: add VMCOREINFO's for user-space tools Date: Wed, 28 Dec 2016 13:36:02 +0900 Message-Id: <20161228043605.27470-4-takahiro.akashi@linaro.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20161228043347.27358-1-takahiro.akashi@linaro.org> References: <20161228043347.27358-1-takahiro.akashi@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161227_203634_656093_E897ADBA X-CRM114-Status: GOOD ( 10.35 ) X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400e:c00:0:0:0:22d listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, geoff@infradead.org, kexec@lists.infradead.org, AKASHI Takahiro , james.morse@arm.com, bauerman@linux.vnet.ibm.com, dyoung@redhat.com, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org In addition to common VMCOREINFO's defined in crash_save_vmcoreinfo_init(), we need to know, for crash utility, - kimage_voffset - PHYS_OFFSET to examine the contents of a dump file (/proc/vmcore) correctly due to the introduction of KASLR (CONFIG_RANDOMIZE_BASE) in v4.6. - VA_BITS is also required for makedumpfile command. arch_crash_save_vmcoreinfo() appends them to the dump file. More VMCOREINFO's may be added later. Signed-off-by: AKASHI Takahiro Reviewed-by: James Morse Acked-by: Catalin Marinas --- arch/arm64/kernel/machine_kexec.c | 11 +++++++++++ 1 file changed, 11 insertions(+) -- 2.11.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index c60346d33bb1..994fe0bc5cc0 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -17,6 +17,7 @@ #include #include +#include #include #include "cpu-reset.h" @@ -260,3 +261,13 @@ void machine_crash_shutdown(struct pt_regs *regs) pr_info("Starting crashdump kernel...\n"); } + +void arch_crash_save_vmcoreinfo(void) +{ + VMCOREINFO_NUMBER(VA_BITS); + /* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */ + vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n", + kimage_voffset); + vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n", + PHYS_OFFSET); +}