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🐛 修复了mm模块对物理地址计算不正确的问题

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This commit is contained in:
fslongjin 2022-02-22 22:03:39 +08:00
parent 6aede7ccc7
commit ce7112a0d2
1 changed files with 4 additions and 3 deletions
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7
kernel/mm/mm.h
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@ -7,7 +7,8 @@
#define PTRS_PER_PGT 512
// 内核层的起始地址
#define KERNEL_BASE_ADDR ((unsigned long)0x100000)
#define PAGE_OFFSET ((unsigned long)0x000000)
#define KERNEL_BASE_PHYS_ADDR ((unsigned long)0x100000)
#define PAGE_4K_SHIFT 12
#define PAGE_2M_SHIFT 21
@ -27,8 +28,8 @@
#define PAGE_2M_ALIGN(addr) (((unsigned long)(addr) + PAGE_2M_SIZE - 1) & PAGE_2M_MASK)
// 虚拟地址与物理地址转换
#define virt_2_phys(addr) ((unsigned long)(addr)-KERNEL_BASE_ADDR)
#define phys_2_virt(addr) ((unsigned long *)((unsigned long)(addr) + KERNEL_BASE_ADDR))
#define virt_2_phys(addr) ((unsigned long)(addr)-PAGE_OFFSET)
#define phys_2_virt(addr) ((unsigned long *)((unsigned long)(addr) + PAGE_OFFSET))
#define Virt_To_2M_Page(kaddr) (memory_management_struct.pages_struct + (virt_2_phys(kaddr) >> PAGE_2M_SHIFT))
#define Phy_to_2M_Page(kaddr) (memory_management_struct.pages_struct + ((unsigned long)(kaddr) >> PAGE_2M_SHIFT))