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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 17DFAD58E4B for ; Mon, 2 Mar 2026 03:53:53 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4fPQ5r0X31z3bkL; Mon, 02 Mar 2026 14:53:52 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=113.46.200.217 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1772423631; cv=none; b=k7f4mcbOQXmX9zV3RdjzCeU1vLP92gIjbVXuOS5Yxuv7F0ZC4CQIBwbuJp/A12Q0Q3Mv+vfqISlJgck66V4UbYwi1vXQC6XmXLZRY473iXxwbncuFV/u6qIsku9pg+FHlnb5MsLNmDrmTPd/N7zPWnNpb+fxd3rN8AlMWWgTlF+gzKuGjo12H3wH5YgK8/Rl8BmQyEiz2nM7DcuRxyQ1NjT2g4SuXXP26AaDhz/58LDQOHYTBe1HZGP0ZkObfpZIhnZa18DByHV7hamXKRKH6jgWOoxSC02jzqMWFyqUF3f5BLtrtbbe1qwNT8Y/DGw66amK/lq5+PJYFnEVMvstLQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1772423631; c=relaxed/relaxed; bh=Z1sEAvaHkLWMtMbzMmXnApZeH7AfC1KWFCkOAYYuwo8=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=PzBz8yhRq7a72wN/ssOlld3x8t6mlJaHgdA1sb/tCarTyx4E5ZtSEjgmO3GxTGSpBfP5NCPmhokpVIFu7gtRDNE3gd5u4Ns64Q6BsGJX2Nf7R+Z5b84kifH6mz3XakWVznkQF3bQvT+61CYnOHttesLgJVQ047XEf1y7beRtAHdR65vCObMCHnZanMwowH5HRPCI8imdUSHEEoyn4kbrUXCWE7yQ18xVqaPS0SndQfnQLG4wUQ6m8amGE6ySSsE48nfJBufREh2l4W/NiH4pt4Mu7bksQqRPTSiNY8JdBjyjet83oRLKsRIOveDR0DBi0n6+V/4rOj+PrHP05qEu7Q== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; dkim=pass (1024-bit key; unprotected) header.d=huawei.com header.i=@huawei.com header.a=rsa-sha256 header.s=dkim header.b=l+D7xZtn; dkim-atps=neutral; spf=pass (client-ip=113.46.200.217; helo=canpmsgout02.his.huawei.com; envelope-from=ruanjinjie@huawei.com; receiver=lists.ozlabs.org) smtp.mailfrom=huawei.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=huawei.com header.i=@huawei.com header.a=rsa-sha256 header.s=dkim header.b=l+D7xZtn; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=huawei.com (client-ip=113.46.200.217; helo=canpmsgout02.his.huawei.com; envelope-from=ruanjinjie@huawei.com; receiver=lists.ozlabs.org) Received: from canpmsgout02.his.huawei.com (canpmsgout02.his.huawei.com [113.46.200.217]) (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 lists.ozlabs.org (Postfix) with ESMTPS id 4fPQ5n08b2z2xc8 for ; Mon, 02 Mar 2026 14:53:46 +1100 (AEDT) dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=Z1sEAvaHkLWMtMbzMmXnApZeH7AfC1KWFCkOAYYuwo8=; b=l+D7xZtnwu76T/ZSDnkYt4tlkXVd/aGuJwNXaMC4yAmfRWNQe9GmyUWFjJeupA8HLOlWv7U5+ 1+lmqn8dkfdAi129Xzbav7SRG5J7JFF1fFixb5eBXBDdslSqeWdrIwtH/jkpxlifEq+FquJsOep 6KoLwxhwCIppHafvEj5KQOU= Received: from mail.maildlp.com (unknown [172.19.162.223]) by canpmsgout02.his.huawei.com (SkyGuard) with ESMTPS id 4fPPzZ657Jzcb0N; Mon, 2 Mar 2026 11:48:26 +0800 (CST) Received: from dggpemf500011.china.huawei.com (unknown [7.185.36.131]) by mail.maildlp.com (Postfix) with ESMTPS id 59F7940561; Mon, 2 Mar 2026 11:53:36 +0800 (CST) Received: from huawei.com (10.90.53.73) by dggpemf500011.china.huawei.com (7.185.36.131) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 2 Mar 2026 11:53:32 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH v8 0/5] arm64/riscv: Add support for crashkernel CMA reservation Date: Mon, 2 Mar 2026 11:53:10 +0800 Message-ID: <20260302035315.3892241-1-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: kwepems200001.china.huawei.com (7.221.188.67) To dggpemf500011.china.huawei.com (7.185.36.131) The crash memory allocation, and the exclude of crashk_res, crashk_low_res and crashk_cma memory are almost identical across different architectures, This patch set handle them in crash core in a general way, which eliminate a lot of duplication code. And add support for crashkernel CMA reservation for arm64 and riscv. Rebased on v7.0-rc1. Basic second kernel boot test were performed on QEMU platforms for x86, ARM64, and RISC-V architectures with the following parameters: "cma=256M crashkernel=256M crashkernel=64M,cma" Changes in v8: - Fix the build issues reported by kernel test robot and Sourabh. - Link to v7: https://lore.kernel.org/all/20260226130437.1867658-1-ruanjinjie@huawei.com/ Changes in v7: - Correct the inclusion of CMA-reserved ranges for kdump kernel in of/kexec for arm64 and riscv. - Add Acked-by. - Link to v6: https://lore.kernel.org/all/20260224085342.387996-1-ruanjinjie@huawei.com/ Changes in v6: - Update the crash core exclude code as Mike suggested. - Rebased on v7.0-rc1. - Add acked-by. - Link to v5: https://lore.kernel.org/all/20260212101001.343158-1-ruanjinjie@huawei.com/ Changes in v5: - Fix the kernel test robot build warnings. - Sort crash memory ranges before preparing elfcorehdr for powerpc - Link to v4: https://lore.kernel.org/all/20260209095931.2813152-1-ruanjinjie@huawei.com/ Changes in v4: - Move the size calculation (and the realloc if needed) into the generic crash. - Link to v3: https://lore.kernel.org/all/20260204093728.1447527-1-ruanjinjie@huawei.com/ Jinjie Ruan (4): crash: Exclude crash kernel memory in crash core crash: Use crash_exclude_core_ranges() on powerpc arm64: kexec: Add support for crashkernel CMA reservation riscv: kexec: Add support for crashkernel CMA reservation Sourabh Jain (1): powerpc/crash: sort crash memory ranges before preparing elfcorehdr .../admin-guide/kernel-parameters.txt | 16 +-- arch/arm64/kernel/machine_kexec_file.c | 39 +++---- arch/arm64/mm/init.c | 5 +- arch/loongarch/kernel/machine_kexec_file.c | 39 +++---- arch/powerpc/include/asm/kexec_ranges.h | 1 - arch/powerpc/kexec/crash.c | 5 +- arch/powerpc/kexec/ranges.c | 101 +----------------- arch/riscv/kernel/machine_kexec_file.c | 38 +++---- arch/riscv/mm/init.c | 5 +- arch/x86/kernel/crash.c | 89 +++------------ drivers/of/fdt.c | 9 +- drivers/of/kexec.c | 9 ++ include/linux/crash_core.h | 9 ++ kernel/crash_core.c | 89 ++++++++++++++- 14 files changed, 178 insertions(+), 276 deletions(-) -- 2.34.1