C++ (Cpp) kasan_map_early_shadow Examples

Example #1

File: kasan_init_64.c Project: Anjali05/linux

void __init kasan_early_init(void)
{
	int i;
	pteval_t pte_val = __pa_nodebug(kasan_early_shadow_page) |
				__PAGE_KERNEL | _PAGE_ENC;
	pmdval_t pmd_val = __pa_nodebug(kasan_early_shadow_pte) | _KERNPG_TABLE;
	pudval_t pud_val = __pa_nodebug(kasan_early_shadow_pmd) | _KERNPG_TABLE;
	p4dval_t p4d_val = __pa_nodebug(kasan_early_shadow_pud) | _KERNPG_TABLE;

	/* Mask out unsupported __PAGE_KERNEL bits: */
	pte_val &= __default_kernel_pte_mask;
	pmd_val &= __default_kernel_pte_mask;
	pud_val &= __default_kernel_pte_mask;
	p4d_val &= __default_kernel_pte_mask;

	for (i = 0; i < PTRS_PER_PTE; i++)
		kasan_early_shadow_pte[i] = __pte(pte_val);

	for (i = 0; i < PTRS_PER_PMD; i++)
		kasan_early_shadow_pmd[i] = __pmd(pmd_val);

	for (i = 0; i < PTRS_PER_PUD; i++)
		kasan_early_shadow_pud[i] = __pud(pud_val);

	for (i = 0; pgtable_l5_enabled() && i < PTRS_PER_P4D; i++)
		kasan_early_shadow_p4d[i] = __p4d(p4d_val);

	kasan_map_early_shadow(early_top_pgt);
	kasan_map_early_shadow(init_top_pgt);
}

Example #2

File: kasan_init.c Project: AshishNamdev/linux

asmlinkage void __init kasan_early_init(void)
{
	BUILD_BUG_ON(KASAN_SHADOW_OFFSET != KASAN_SHADOW_END - (1UL << 61));
	BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_START, PGDIR_SIZE));
	BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_END, PGDIR_SIZE));
	kasan_map_early_shadow();
}

Example #3

File: kasan_init_64.c Project: BWhitten/linux-stable

void __init kasan_early_init(void)
{
	int i;
	pteval_t pte_val = __pa_nodebug(kasan_zero_page) | __PAGE_KERNEL;
	pmdval_t pmd_val = __pa_nodebug(kasan_zero_pte) | _KERNPG_TABLE;
	pudval_t pud_val = __pa_nodebug(kasan_zero_pmd) | _KERNPG_TABLE;

	for (i = 0; i < PTRS_PER_PTE; i++)
		kasan_zero_pte[i] = __pte(pte_val);

	for (i = 0; i < PTRS_PER_PMD; i++)
		kasan_zero_pmd[i] = __pmd(pmd_val);

	for (i = 0; i < PTRS_PER_PUD; i++)
		kasan_zero_pud[i] = __pud(pud_val);

	kasan_map_early_shadow(early_level4_pgt);
	kasan_map_early_shadow(init_level4_pgt);
}