C++ (Cpp) fcse_va_to_mva Exemples

Exemple #1

Fichier : pgd.c Projet : chrmorais/miniemc2

void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd)
{
	unsigned long flags;
	pmd_t *pmd;
	pgtable_t pte;

	if (!pgd)
		return;

	/* pgd is always present and good */
	pmd = pmd_off(pgd + pgd_index(fcse_va_to_mva(mm, 0)), 0);
	if (pmd_none(*pmd))
		goto free;
	if (pmd_bad(*pmd)) {
		pmd_ERROR(*pmd);
		pmd_clear(pmd);
		goto free;
	}

	pte = pmd_pgtable(*pmd);
	pmd_clear(pmd);
	pte_free(mm, pte);
	pmd_free(mm, pmd);
free:
	pgd_list_lock(flags);
	pgd_list_del(pgd);
	pgd_list_unlock(flags);
	free_pages((unsigned long) pgd, 2);
}

Exemple #2

void pgd_free(struct mm_struct *mm, pgd_t *pgd_base)
{
	unsigned long flags;
	pgd_t *pgd;
	pud_t *pud;
	pmd_t *pmd;
	pgtable_t pte;

	if (!pgd_base)
		return;

	pgd = pgd_base + pgd_index(0);
	if (pgd_none_or_clear_bad(pgd))
		goto no_pgd;

	pud = pud_offset(pgd + pgd_index(fcse_va_to_mva(mm, 0)), 0);
	if (pud_none_or_clear_bad(pud))
		goto no_pud;

	pmd = pmd_offset(pud, 0);
	if (pmd_none_or_clear_bad(pmd))
		goto no_pmd;

	pte = pmd_pgtable(*pmd);
	pmd_clear(pmd);
	pte_free(mm, pte);
no_pmd:
	pud_clear(pud);
	pmd_free(mm, pmd);
no_pud:
	pgd_clear(pgd);
	pud_free(mm, pud);
no_pgd:
	pgd_list_lock(flags);
	pgd_list_del(pgd);
	pgd_list_unlock(flags);
	free_pages((unsigned long) pgd_base, 2);
}