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[2620:137:e000::1:20]) by mx.google.com with ESMTP id j14-20020a170903024e00b001783ba6f79dsi2757487plh.494.2022.10.14.01.00.15; Fri, 14 Oct 2022 01:00:29 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230005AbiJNHsr (ORCPT + 99 others); Fri, 14 Oct 2022 03:48:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229772AbiJNHsl (ORCPT ); Fri, 14 Oct 2022 03:48:41 -0400 Received: from out30-43.freemail.mail.aliyun.com (out30-43.freemail.mail.aliyun.com [115.124.30.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3267167246; Fri, 14 Oct 2022 00:48:39 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R181e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046050;MF=xianting.tian@linux.alibaba.com;NM=1;PH=DS;RN=23;SR=0;TI=SMTPD_---0VS6v5Dj_1665733713; Received: from localhost.localdomain(mailfrom:xianting.tian@linux.alibaba.com fp:SMTPD_---0VS6v5Dj_1665733713) by smtp.aliyun-inc.com; Fri, 14 Oct 2022 15:48:34 +0800 From: Xianting Tian To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, anup@brainfault.org, heiko@sntech.de, guoren@kernel.org, mick@ics.forth.gr, alexandre.ghiti@canonical.com, bhe@redhat.com, vgoyal@redhat.com, dyoung@redhat.com, corbet@lwn.net, Conor.Dooley@microchip.com Cc: kexec@lists.infradead.org, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, crash-utility@redhat.com, heinrich.schuchardt@canonical.com, k-hagio-ab@nec.com, hschauhan@nulltrace.org, yixun.lan@gmail.com, Xianting Tian Subject: [PATCH 2/2] Documentation: kdump: describe VMCOREINFO export for RISCV64 Date: Fri, 14 Oct 2022 15:48:10 +0800 Message-Id: <20221014074810.4471-3-xianting.tian@linux.alibaba.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221014074810.4471-1-xianting.tian@linux.alibaba.com> References: <20221014074810.4471-1-xianting.tian@linux.alibaba.com> X-Spam-Status: No, score=-9.9 required=5.0 tests=BAYES_00, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1746649145147985196?= X-GMAIL-MSGID: =?utf-8?q?1746649145147985196?= The following interrelated definitions and ranges are needed by the kdump crash tool, they are exported by "arch/riscv/kernel/crash_core.c": VA_BITS, PAGE_OFFSET, phys_ram_base, MODULES_VADDR ~ MODULES_END, VMALLOC_START ~ VMALLOC_END, VMEMMAP_START ~ VMEMMAP_END, KASAN_SHADOW_START ~ KASAN_SHADOW_END, KERNEL_LINK_ADDR ~ ADDRESS_SPACE_END Document these RISCV64 exports above. Signed-off-by: Xianting Tian --- .../admin-guide/kdump/vmcoreinfo.rst | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst index 6726f439958c..6c7a1728de22 100644 --- a/Documentation/admin-guide/kdump/vmcoreinfo.rst +++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst @@ -595,3 +595,34 @@ X2TLB ----- Indicates whether the crashed kernel enabled SH extended mode. + +RISCV64 +======= + +VA_BITS +------- + +The maximum number of bits for virtual addresses. Used to compute the +virtual memory ranges. + +PAGE_OFFSET +----------- + +Indicates the virtual kernel start address of direct-mapped RAM region. + +phys_ram_base +------------- + +Indicates the start physical RAM address. + +---------------------------------------------------------------------------------------------------------------------------------------------------- +MODULES_VADDR|MODULES_END|VMALLOC_START|VMALLOC_END|VMEMMAP_START|VMEMMAP_END|KASAN_SHADOW_START|KASAN_SHADOW_END|KERNEL_LINK_ADDR|ADDRESS_SPACE_END +---------------------------------------------------------------------------------------------------------------------------------------------------- + +Used to get the correct ranges: + + * MODULES_VADDR ~ MODULES_END : Kernel module space. + * VMALLOC_START ~ VMALLOC_END : vmalloc() / ioremap() space. + * VMEMMAP_START ~ VMEMMAP_END : vmemmap region, used for struct page array. + * KASAN_SHADOW_START ~ KASAN_SHADOW_END : kasan shadow space. + * KERNEL_LINK_ADDR ~ ADDRESS_SPACE_END : Kernel link and BPF space.