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Update linux-initialization-1.md

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0xAX 2015-04-18 00:45:20 +06:00
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Initialization/linux-initialization-1.md
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@ -122,7 +122,7 @@ The first step before we started to setup identity paging, need to correct follo
addq %rbp, level2_fixmap_pgt + (506*8)(%rip) addq %rbp, level2_fixmap_pgt + (506*8)(%rip)
``` ```
Here we need to correct `early_level4_pgt` and other addresses because as I wrote above kernel can be runned not at the default `0x1000000` address. `rbp` register contains actuall address so we add to the `early_level4_pgt`, `level3_kernel_pgt` and `level2_fixmap_pgt`. Let's try to understand what this labels means. First of all let's look on their definition: Here we need to correct `early_level4_pgt` and other addresses of the page table directories, because as I wrote above, kernel can be runned not at the default `0x1000000` address. `rbp` register contains actuall address so we add to the `early_level4_pgt`, `level3_kernel_pgt` and `level2_fixmap_pgt`. Let's try to understand what this labels means. First of all let's look on their definition:
```assembly ```assembly
NEXT_PAGE(early_level4_pgt) NEXT_PAGE(early_level4_pgt)