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remove 2mb check

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This commit is contained in:
twoneis 2025-04-25 09:19:17 +02:00
parent 176eb30d1c
commit 1de25ed9c3
1 changed files with 32 additions and 32 deletions
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64
code/lkm.c
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@ -27,47 +27,47 @@ static struct file_operations lkm_fops = {
.unlocked_ioctl = lkm_ioctl,
};
void
is2mb(size_t addr)
{
unsigned long above = ((long)addr) >> __VIRTUAL_MASK_SHIFT;
pgd_t *pgd;
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
// void
// is2mb(size_t addr)
// {
// unsigned long above = ((long)addr) >> __VIRTUAL_MASK_SHIFT;
// pgd_t *pgd;
// p4d_t *p4d;
// pud_t *pud;
// pmd_t *pmd;
// pte_t *pte;
if (above != 0 && above != -1UL)
return 0;
// if (above != 0 && above != -1UL)
// return 0;
pgd = pgd_offset_pgd(_init_top_pgt, addr);
if (pgd_none(*pgd))
return 0;
// pgd = pgd_offset_pgd(_init_top_pgt, addr);
// if (pgd_none(*pgd))
// return 0;
p4d = p4d_offset(pgd, addr);
if (!p4d_present(*p4d))
return 0;
// p4d = p4d_offset(pgd, addr);
// if (!p4d_present(*p4d))
// return 0;
pud = pud_offset(p4d, addr);
if (!pud_present(*pud))
return 0;
// pud = pud_offset(p4d, addr);
// if (!pud_present(*pud))
// return 0;
if (pud_large(*pud))
return 0;
// if (pud_large(*pud))
// return 0;
pmd = pmd_offset(pud, addr);
if (!pmd_present(*pmd))
return 0;
// pmd = pmd_offset(pud, addr);
// if (!pmd_present(*pmd))
// return 0;
if (pmd_large(*pmd))
return 1;
// if (pmd_large(*pmd))
// return 1;
pte = pte_offset_kernel(pmd, addr);
if (pte_none(*pte))
return 0;
// pte = pte_offset_kernel(pmd, addr);
// if (pte_none(*pte))
// return 0;
return 0;
}
// return 0;
// }
static int
lkm_init(void)