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Recursive map the P4 table

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Philipp Oppermann
2017-04-13 18:35:00 +02:00
parent e50d70c02e
commit 8fcea7951b
1 changed files with 5 additions and 0 deletions
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5
src/arch/x86_64/boot.asm
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@@ -85,6 +85,11 @@ check_long_mode:
jmp error jmp error
set_up_page_tables: set_up_page_tables:
; map P4 table recursively
mov eax, p4_table
or eax, 0b11 ; present + writable
mov [p4_table + 511 * 8], eax
; map first P4 entry to P3 table ; map first P4 entry to P3 table
mov eax, p3_table mov eax, p3_table
or eax, 0b11 ; present + writable or eax, 0b11 ; present + writable