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try to fix page fault

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This commit is contained in:
RaphProductions 2025-05-09 15:07:22 +02:00
parent 105a10aba3
commit 4309b666a4
8 changed files with 40 additions and 10 deletions
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13
kernel/src/mm/vmm.c
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@ -171,18 +171,19 @@ uint64_t vmm_get_flags(pagemap_t* pm, uint64_t vaddr) {
return pml1[pml1_entry] & 0x7000000000000FFF;
}
uint64_t virt_to_phys(pagemap_t *pagemap, uint64_t virt)
{
uint64_t pml1_idx = (virt & (uint64_t)0x1ff << 12) >> 12;
uint64_t pml2_idx = (virt & (uint64_t)0x1ff << 21) >> 21;
uint64_t pml3_idx = (virt & (uint64_t)0x1ff << 30) >> 30;
uint64_t pml4_idx = (virt & (uint64_t)0x1ff << 39) >> 39;
uint64_t pml4_idx = (virt >> 39) & 0x1FF;
uint64_t pml3_idx = (virt >> 30) & 0x1FF;
uint64_t pml2_idx = (virt >> 21) & 0x1FF;
uint64_t pml1_idx = (virt >> 12) & 0x1FF;
uint64_t *pml3 = __vmm_get_next_lvl(pagemap->toplevel, pml4_idx, 0);
uint64_t *pml2 = __vmm_get_next_lvl(pml3, pml3_idx, 0);
uint64_t *pml1 = __vmm_get_next_lvl(pml2, pml2_idx, 0);
uint64_t phys_addr = pml1[pml1_idx] & 0x000FFFFFFFFFF000;
uint64_t phys_addr = pml1[pml1_idx] & 0x000FFFFFFFFFF000; // Masque pour obtenir l'adresse physique (en retirant les bits de flags)
return phys_addr;
}