From nobody Tue Sep 9 17:32:21 2025 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 61DA2C64EC4 for ; Wed, 22 Feb 2023 06:53:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230410AbjBVGx1 (ORCPT ); Wed, 22 Feb 2023 01:53:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230316AbjBVGxX (ORCPT ); Wed, 22 Feb 2023 01:53:23 -0500 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2887C1286B for ; Tue, 21 Feb 2023 22:53:20 -0800 (PST) Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8AxlF3fu_Vjsn0DAA--.1570S3; Wed, 22 Feb 2023 14:53:19 +0800 (CST) Received: from bogon.localdomain (unknown [113.200.148.30]) by localhost.localdomain (Coremail) with SMTP id AQAAf8DxK77Yu_VjuoY4AA--.37664S3; Wed, 22 Feb 2023 14:53:19 +0800 (CST) From: Youling Tang To: Huacai Chen Cc: Xuerui Wang , loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] LoongArch: kdump: Add the same binary implementation Date: Wed, 22 Feb 2023 14:53:10 +0800 Message-Id: <1677048791-26951-2-git-send-email-tangyouling@loongson.cn> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1677048791-26951-1-git-send-email-tangyouling@loongson.cn> References: <1677048791-26951-1-git-send-email-tangyouling@loongson.cn> X-CM-TRANSID: AQAAf8DxK77Yu_VjuoY4AA--.37664S3 X-CM-SenderInfo: 5wdqw5prxox03j6o00pqjv00gofq/ X-Coremail-Antispam: 1Uk129KBjvJXoWxWr17JryUGryfCr1ruF1kGrg_yoWrGr1Dpr 9xAF4kJFW8Grn5trWqy34DWrWDJ3Z7CF1ag3W7Aa48AF47Zw1UZr1vyr9rXF1Ut393trW0 gFyrGw1ava1UGwUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU b28YFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s 1l1IIY67AEw4v_Jrv_JF1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xv wVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwA2z4 x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26r4UJVWxJr1l e2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2xF0cIa020Ex4CE44I27wAqx4xG64xvF2 IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jrv_JF1lYx0Ex4A2jsIE14v26r4j6F4U McvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCF04k20xvY0x0EwIxGrwCFx2 IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v2 6r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67 AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IY s7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r4j6F4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr 0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x07jYSoJUUUUU= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This feature depends on the relocation function, so the relocation configur= ation CONFIG_RELOCATABLE will be enabled. Add the same set of binary implementations for kdump, and then no longer ne= ed to compile two kernels (the production kernel and the capture kernel share the= same binary). CONFIG_CRASH_DUMP is enabled by default (CONFIG_RELOCATABLE is also enabled= ). Signed-off-by: Youling Tang --- arch/loongarch/Kconfig | 12 +----------- arch/loongarch/Makefile | 4 ---- arch/loongarch/configs/loongson3_defconfig | 1 + arch/loongarch/include/asm/addrspace.h | 2 ++ arch/loongarch/kernel/head.S | 2 +- 5 files changed, 5 insertions(+), 16 deletions(-) diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index ab4c2ab146ab..84f220273296 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -502,6 +502,7 @@ config KEXEC =20 config CRASH_DUMP bool "Build kdump crash kernel" + select RELOCATABLE help Generate crash dump after being started by kexec. This should be normally only set in special crash dump kernels which are @@ -511,17 +512,6 @@ config CRASH_DUMP =20 For more details see Documentation/admin-guide/kdump/kdump.rst =20 -config PHYSICAL_START - hex "Physical address where the kernel is loaded" - default "0x90000000a0000000" - depends on CRASH_DUMP - help - This gives the XKPRANGE address where the kernel is loaded. - If you plan to use kernel for capturing the crash dump change - this value to start of the reserved region (the "X" value as - specified in the "crashkernel=3DYM@XM" command line boot parameter - passed to the panic-ed kernel). - config RELOCATABLE bool "Relocatable kernel" help diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile index 2aba6ff30436..8304fed7aa42 100644 --- a/arch/loongarch/Makefile +++ b/arch/loongarch/Makefile @@ -79,11 +79,7 @@ endif cflags-y +=3D -ffreestanding cflags-y +=3D $(call cc-option, -mno-check-zero-division) =20 -ifndef CONFIG_PHYSICAL_START load-y =3D 0x9000000000200000 -else -load-y =3D $(CONFIG_PHYSICAL_START) -endif bootvars-y =3D VMLINUX_LOAD_ADDRESS=3D$(load-y) =20 drivers-$(CONFIG_PCI) +=3D arch/loongarch/pci/ diff --git a/arch/loongarch/configs/loongson3_defconfig b/arch/loongarch/co= nfigs/loongson3_defconfig index cb52774c80e8..7885f6e5de93 100644 --- a/arch/loongarch/configs/loongson3_defconfig +++ b/arch/loongarch/configs/loongson3_defconfig @@ -48,6 +48,7 @@ CONFIG_HOTPLUG_CPU=3Dy CONFIG_NR_CPUS=3D64 CONFIG_NUMA=3Dy CONFIG_KEXEC=3Dy +CONFIG_CRASH_DUMP=3Dy CONFIG_SUSPEND=3Dy CONFIG_HIBERNATION=3Dy CONFIG_ACPI=3Dy diff --git a/arch/loongarch/include/asm/addrspace.h b/arch/loongarch/includ= e/asm/addrspace.h index d342935e5a72..4edcb3c21cf5 100644 --- a/arch/loongarch/include/asm/addrspace.h +++ b/arch/loongarch/include/asm/addrspace.h @@ -125,4 +125,6 @@ extern unsigned long vm_map_base; #define ISA_IOSIZE SZ_16K #define IO_SPACE_LIMIT (PCI_IOSIZE - 1) =20 +#define PHYS_LINK_ADDR PHYSADDR(VMLINUX_LOAD_ADDRESS) + #endif /* _ASM_ADDRSPACE_H */ diff --git a/arch/loongarch/kernel/head.S b/arch/loongarch/kernel/head.S index b12f459ad73a..57962ff08f6d 100644 --- a/arch/loongarch/kernel/head.S +++ b/arch/loongarch/kernel/head.S @@ -24,7 +24,7 @@ _head: .org 0x8 .dword kernel_entry /* Kernel entry point */ .dword _end - _text /* Kernel image effective size */ - .quad 0 /* Kernel image load offset from start of RAM */ + .quad PHYS_LINK_ADDR /* Kernel image load offset from start of RAM */ .org 0x38 /* 0x20 ~ 0x37 reserved */ .long LINUX_PE_MAGIC .long pe_header - _head /* Offset to the PE header */ --=20 2.37.3