From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD068C001B0 for ; Mon, 24 Jul 2023 10:17:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231546AbjGXKRl (ORCPT ); Mon, 24 Jul 2023 06:17:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46550 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232003AbjGXKRT (ORCPT ); Mon, 24 Jul 2023 06:17:19 -0400 Received: from mail-oo1-xc2d.google.com (mail-oo1-xc2d.google.com [IPv6:2607:f8b0:4864:20::c2d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEB8665B7; Mon, 24 Jul 2023 03:09:36 -0700 (PDT) Received: by mail-oo1-xc2d.google.com with SMTP id 006d021491bc7-56597d949b1so2542379eaf.1; Mon, 24 Jul 2023 03:09:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1690193375; x=1690798175; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=RDlfftCqHuUNq6LkkwKxzRiSDkmFGSCz0/vq6oh3T+s=; b=hrex/GaUVfMUNZRWvZGpegE4riCW/oOM8uo1UlMmZrlwQR1Y5g9p5yiEY70tHm1Nzn Kr5sAEgXdRnmXkRixZ7uSFsyu3mNjkPZQedetliik0YCgA1z5anwyhWO9wgDZJyycz8L bqVnG2/rUHzputkQE2I8YmX+z8H53N83YyFIUqLlAn9cJmQ4l5FtwSeir3YT0mCh/CG7 JEi1SSLS+YGBbkTVOq9MO8LWjBph4mBH+cWBfdLJUhXU6fvKZdialD83Hcug1zFLoGt6 BHhQtXdk8mLSMT19jnYSRQvWcdarZMfp3CBtw3bGQxqh6FJqAgde0fb2q24nvFcehQ0V 1Kew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690193375; x=1690798175; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=RDlfftCqHuUNq6LkkwKxzRiSDkmFGSCz0/vq6oh3T+s=; b=HH3TfRjHnWS8nK9abvA1Fzry8XUzkeK3UrglqfGgYbWjfsuVjOZM72N79wKtn/ayvN prjT/cNuI1siVpZY8AiWsMzdyKzESirDuUCVmI/Ua5zjaSHgqSB4JnqDLwUt1A4Q7g+F OaSdGNpuVrHSaCe9JjYqhEY54b2eS6h7s24OiXQQBrZ2pn6+j+7eSHXuPXXktlQTC5Ek eVMaoDK3DYVInFkNq5WFIB57pHbGODDXcGJMwx6MXdNUuAxRr1D8U/DwiOclgb5FOFfJ GJVPCnLv+WqsVVgBMTqYo16pEHaOoUxAR+zIKOWuUunCxDJw1qU77gmiGKlAuMz6T+Hm ETfQ== X-Gm-Message-State: ABy/qLbfVbDi/kmT9vy5zLi550CfcBOqDaD1wdsGS6qM+2wULgVInhF0 Dn6Le5UK1EwNXOofx/Nj0Hk= X-Google-Smtp-Source: APBJJlHdgdC3rG6LO2coONZP/kkI0Ylc1MgH/PIQ2Zz6Htck/GwFgmmgxR6G3vTB6BKFwu4lvsrr9w== X-Received: by 2002:a05:6808:1410:b0:3a3:5fc6:3ba6 with SMTP id w16-20020a056808141000b003a35fc63ba6mr12452468oiv.42.1690193375682; Mon, 24 Jul 2023 03:09:35 -0700 (PDT) Received: from localhost.localdomain ([2408:843e:c90:2347:5782:34b7:c2b6:16d2]) by smtp.gmail.com with ESMTPSA id t29-20020a63b25d000000b0051b8172fa68sm8272826pgo.38.2023.07.24.03.09.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jul 2023 03:09:35 -0700 (PDT) From: Song Shuai To: bhe@redhat.com, vgoyal@redhat.com, dyoung@redhat.com, corbet@lwn.net, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, xianting.tian@linux.alibaba.com, suagrfillet@gmail.com, anup@brainfault.org, robh@kernel.org, ajones@ventanamicro.com, alexghiti@rivosinc.com, conor.dooley@microchip.com Cc: kexec@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [RESEND PATCH -fixes 1/2] riscv: Export va_kernel_pa_offset in vmcoreinfo Date: Mon, 24 Jul 2023 18:09:16 +0800 Message-Id: <20230724100917.309061-1-suagrfillet@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since RISC-V Linux v6.4, the commit 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping") changes phys_ram_base from the physical start of the kernel to the actual start of the DRAM. The Crash-utility's VTOP() still uses phys_ram_base and kernel_map.virt_addr to translate kernel virtual address, that failed the Crash with Linux v6.4 [1]. Export kernel_map.va_kernel_pa_offset in vmcoreinfo to help Crash translate the kernel virtual address correctly. Fixes: 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping") Link: https://lore.kernel.org/linux-riscv/20230724040649.220279-1-suagrfillet@gmail.com/ [1] Signed-off-by: Song Shuai --- arch/riscv/kernel/crash_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/kernel/crash_core.c b/arch/riscv/kernel/crash_core.c index b351a3c01355..55f1d7856b54 100644 --- a/arch/riscv/kernel/crash_core.c +++ b/arch/riscv/kernel/crash_core.c @@ -18,4 +18,6 @@ void arch_crash_save_vmcoreinfo(void) vmcoreinfo_append_str("NUMBER(MODULES_END)=0x%lx\n", MODULES_END); #endif vmcoreinfo_append_str("NUMBER(KERNEL_LINK_ADDR)=0x%lx\n", KERNEL_LINK_ADDR); + vmcoreinfo_append_str("NUMBER(va_kernel_pa_offset)=0x%lx\n", + kernel_map.va_kernel_pa_offset); } -- 2.20.1