Use 4Mbyte pages during boot
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parent
843eecfcd0
commit
9449646853
5
entry.S
5
entry.S
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@ -39,6 +39,11 @@ multiboot_header:
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# Multiboot entry point. Machine is mostly set up.
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.globl multiboot_entry
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multiboot_entry:
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# Turn on page size extension for 4Mbyte pages
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movl %cr4, %eax
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orl $(CR4_PSE), %eax
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movl %eax, %cr4
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# Set page directory
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movl $(V2P_WO(bootpgdir)), %eax
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movl %eax, %cr3
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# Turn on paging.
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@ -50,6 +50,10 @@ start32:
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movw %ax, %fs
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movw %ax, %gs
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# Turn on page size extension for 4Mbyte pages
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movl %cr4, %eax
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orl $(CR4_PSE), %eax
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movl %eax, %cr4
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# Use bootpgdir as our initial page table
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movl (start-12), %eax
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movl %eax, %cr3
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@ -58,7 +62,7 @@ start32:
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orl $(CR0_PE|CR0_PG|CR0_WP), %eax
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movl %eax, %cr0
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# Switch to the stack allocated by entryothers()
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# Switch to the stack allocated by enterothers()
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movl (start-4), %esp
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# Call mpboot()
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call *(start-8)
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