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remove user-level permissions in the boot pdpt & pgd

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=> new tasks don't copy the kernel entries
This commit is contained in:
Stefan Lankes 2015-08-28 07:53:02 +02:00
parent 5a7cb4e4e0
commit 6c707f6595
1 changed files with 2 additions and 3 deletions
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5
hermit/arch/x86/kernel/entry.asm
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@ -55,7 +55,6 @@ align 4
global possible_cpus
global timer_ticks
global current_boot_id
global image_size
base dq 0
limit dq 0
cpu_freq dd 0
@ -74,11 +73,11 @@ boot_pml4:
times 510 DQ 0 ; PAGE_MAP_ENTRIES - 2
DQ boot_pml4 + 0x203 ; PG_PRESENT | PG_RW | PG_SELF (self-reference)
boot_pdpt:
DQ boot_pgd + 0x7 ; PG_PRESENT | PG_RW | PG_USER
DQ boot_pgd + 0x3 ; PG_PRESENT | PG_RW
times 510 DQ 0 ; PAGE_MAP_ENTRIES - 2
DQ boot_pml4 + 0x203 ; PG_PRESENT | PG_RW | PG_SELF (self-reference)
boot_pgd:
DQ boot_pgt + 0x7 ; PG_PRESENT | PG_RW | PG_USER
DQ boot_pgt + 0x3 ; PG_PRESENT | PG_RW
times 510 DQ 0 ; PAGE_MAP_ENTRIES - 2
DQ boot_pml4 + 0x203 ; PG_PRESENT | PG_RW | PG_SELF (self-reference)
boot_pgt: