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🆕 kmalloc

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fslongjin
2022-02-25 20:01:08 +08:00
parent 1ad685f7a3
commit 828621dbbc
3 changed files with 189 additions and 15 deletions
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2
kernel/mm/mm.c
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@ -68,7 +68,7 @@ void mm_init()
memory_management_struct.bmp_len = (((unsigned long)(max_addr >> PAGE_2M_SHIFT) + sizeof(unsigned long) * 8 - 1) / 8) & (~(sizeof(unsigned long) - 1)); // bmp由多少个unsigned long变量组成
// 初始化bitmap， 先将整个bmp空间全部置位。稍后再将可用物理内存页复位。
memset(memory_management_struct.bmp, 0xffffffffffffffff, memory_management_struct.bmp_len);
memset(memory_management_struct.bmp, 0xff, memory_management_struct.bmp_len);
// 初始化内存页结构
// 将页结构映射于bmp之后