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fbe7d19d2b
Since RISC-V Linux v6.4, the commit3335068f87("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:3335068f87("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 <suagrfillet@gmail.com> Reviewed-by: Xianting Tian <xianting.tian@linux.alibaba.com> Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20230724100917.309061-1-suagrfillet@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
24 lines
901 B
C
24 lines
901 B
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/crash_core.h>
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#include <linux/pagemap.h>
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void arch_crash_save_vmcoreinfo(void)
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{
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VMCOREINFO_NUMBER(VA_BITS);
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VMCOREINFO_NUMBER(phys_ram_base);
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vmcoreinfo_append_str("NUMBER(PAGE_OFFSET)=0x%lx\n", PAGE_OFFSET);
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vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START);
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vmcoreinfo_append_str("NUMBER(VMALLOC_END)=0x%lx\n", VMALLOC_END);
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vmcoreinfo_append_str("NUMBER(VMEMMAP_START)=0x%lx\n", VMEMMAP_START);
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vmcoreinfo_append_str("NUMBER(VMEMMAP_END)=0x%lx\n", VMEMMAP_END);
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#ifdef CONFIG_64BIT
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vmcoreinfo_append_str("NUMBER(MODULES_VADDR)=0x%lx\n", MODULES_VADDR);
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vmcoreinfo_append_str("NUMBER(MODULES_END)=0x%lx\n", MODULES_END);
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#endif
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vmcoreinfo_append_str("NUMBER(KERNEL_LINK_ADDR)=0x%lx\n", KERNEL_LINK_ADDR);
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vmcoreinfo_append_str("NUMBER(va_kernel_pa_offset)=0x%lx\n",
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kernel_map.va_kernel_pa_offset);
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}
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