函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\e820.c Create Date:2022-07-27 08:43:06
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Because of the small fixed size of struct boot_params, only the first* 128 E820 memory entries are passed to the kernel via boot_params.e820_table,* the remaining (if any) entries are passed via the SETUP_E820_EXT node of

函数原型：void __init e820__memory_setup_extended(u64 phys_addr, unsigned int data_len)

返回类型：void

参数：

类型参数名称
u64phys_addr
unsigned intdata_len
716  sdata等于early_memremap(phys_addr, data_len)
717  entries等于len除extmap的长度
718  extmap等于data
720  __append_e820_table(extmap, entries)
721  e820__update_table(e820_table)
723  memcpy(e820_table_kexec, e820_table, e820_table_kexec的长度)
724  memcpy(e820_table_firmware, e820_table, e820_table_firmware的长度)
726  early_memunmap(sdata, data_len)
727  打印信息("extended physical RAM map:\n")
728  e820__print_table("extended")
调用者
名称描述
parse_setup_data