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 08:43:15
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Reserve all entries from the bootloader's extensible data nodes list,* because if present we are going to use it later on to fetch e820* entries from it:

函数原型：void __init e820__reserve_setup_data(void)

返回类型：void

参数：无

995  pa_data等于安装数据地址
996  如果非pa_data则返回
999  当pa_data循环
1000  data等于early_memremap(pa_data, data的长度)
1001  e820__range_update(pa_data, data的长度 + len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN)
1002  e820__range_update_kexec(pa_data, data的长度 + len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN)
1004  如果type恒等于SETUP_INDIRECT且type不等于SETUP_INDIRECT则
1006  e820__range_update(addr, len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN)
1009  e820__range_update_kexec(addr, len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN)
1014  pa_data等于next
1015  early_memunmap(data, data的长度)
1018  e820__update_table(e820_table)
1019  e820__update_table(e820_table_kexec)
1021  打印信息("extended physical RAM map:\n")
1022  e820__print_table("reserve setup_data")
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名称描述
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