From 39365395046fe74bebf6f70e86439f48ba56a75e Mon Sep 17 00:00:00 2001 From: Baoquan He Date: Thu, 14 Sep 2023 11:31:41 +0800 Subject: riscv: kdump: use generic interface to simplify crashkernel reservation With the help of newly changed function parse_crashkernel() and generic reserve_crashkernel_generic(), crashkernel reservation can be simplified by steps: 1) Add a new header file , and define CRASH_ALIGN, CRASH_ADDR_LOW_MAX, CRASH_ADDR_HIGH_MAX and DEFAULT_CRASH_KERNEL_LOW_SIZE in ; 2) Add arch_reserve_crashkernel() to call parse_crashkernel() and reserve_crashkernel_generic(); 3) Add ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION Kconfig in arch/riscv/Kconfig. The old reserve_crashkernel_low() and reserve_crashkernel() can be removed. [chenjiahao16@huawei.com: fix crashkernel reserving problem on RISC-V] Link: https://lkml.kernel.org/r/20230925024333.730964-1-chenjiahao16@huawei.com Link: https://lkml.kernel.org/r/20230914033142.676708-9-bhe@redhat.com Signed-off-by: Baoquan He Signed-off-by: Chen Jiahao Cc: Catalin Marinas Cc: Chen Jiahao Cc: Zhen Lei Signed-off-by: Andrew Morton --- arch/riscv/include/asm/crash_core.h | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 arch/riscv/include/asm/crash_core.h (limited to 'arch/riscv/include/asm/crash_core.h') diff --git a/arch/riscv/include/asm/crash_core.h b/arch/riscv/include/asm/crash_core.h new file mode 100644 index 000000000000..e1874b23feaf --- /dev/null +++ b/arch/riscv/include/asm/crash_core.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef _RISCV_CRASH_CORE_H +#define _RISCV_CRASH_CORE_H + +#define CRASH_ALIGN PMD_SIZE + +#define CRASH_ADDR_LOW_MAX dma32_phys_limit +#define CRASH_ADDR_HIGH_MAX memblock_end_of_DRAM() + +extern phys_addr_t memblock_end_of_DRAM(void); +#endif -- cgit v1.2.3