aboutsummaryrefslogtreecommitdiffstats
path: root/arch/riscv/mm/kasan_init.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/riscv/mm/kasan_init.c')
-rw-r--r--arch/riscv/mm/kasan_init.c53
1 files changed, 32 insertions, 21 deletions
diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c
index 5e39dcf23fdb..c301c8d291d2 100644
--- a/arch/riscv/mm/kasan_init.c
+++ b/arch/riscv/mm/kasan_init.c
@@ -31,7 +31,7 @@ static void __init kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned
phys_addr_t phys_addr;
pte_t *ptep, *p;
- if (pmd_none(*pmd)) {
+ if (pmd_none(pmdp_get(pmd))) {
p = memblock_alloc(PTRS_PER_PTE * sizeof(pte_t), PAGE_SIZE);
set_pmd(pmd, pfn_pmd(PFN_DOWN(__pa(p)), PAGE_TABLE));
}
@@ -39,7 +39,7 @@ static void __init kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned
ptep = pte_offset_kernel(pmd, vaddr);
do {
- if (pte_none(*ptep)) {
+ if (pte_none(ptep_get(ptep))) {
phys_addr = memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE);
set_pte(ptep, pfn_pte(PFN_DOWN(phys_addr), PAGE_KERNEL));
memset(__va(phys_addr), KASAN_SHADOW_INIT, PAGE_SIZE);
@@ -53,7 +53,7 @@ static void __init kasan_populate_pmd(pud_t *pud, unsigned long vaddr, unsigned
pmd_t *pmdp, *p;
unsigned long next;
- if (pud_none(*pud)) {
+ if (pud_none(pudp_get(pud))) {
p = memblock_alloc(PTRS_PER_PMD * sizeof(pmd_t), PAGE_SIZE);
set_pud(pud, pfn_pud(PFN_DOWN(__pa(p)), PAGE_TABLE));
}
@@ -63,7 +63,8 @@ static void __init kasan_populate_pmd(pud_t *pud, unsigned long vaddr, unsigned
do {
next = pmd_addr_end(vaddr, end);
- if (pmd_none(*pmdp) && IS_ALIGNED(vaddr, PMD_SIZE) && (next - vaddr) >= PMD_SIZE) {
+ if (pmd_none(pmdp_get(pmdp)) && IS_ALIGNED(vaddr, PMD_SIZE) &&
+ (next - vaddr) >= PMD_SIZE) {
phys_addr = memblock_phys_alloc(PMD_SIZE, PMD_SIZE);
if (phys_addr) {
set_pmd(pmdp, pfn_pmd(PFN_DOWN(phys_addr), PAGE_KERNEL));
@@ -83,7 +84,7 @@ static void __init kasan_populate_pud(p4d_t *p4d,
pud_t *pudp, *p;
unsigned long next;
- if (p4d_none(*p4d)) {
+ if (p4d_none(p4dp_get(p4d))) {
p = memblock_alloc(PTRS_PER_PUD * sizeof(pud_t), PAGE_SIZE);
set_p4d(p4d, pfn_p4d(PFN_DOWN(__pa(p)), PAGE_TABLE));
}
@@ -93,7 +94,8 @@ static void __init kasan_populate_pud(p4d_t *p4d,
do {
next = pud_addr_end(vaddr, end);
- if (pud_none(*pudp) && IS_ALIGNED(vaddr, PUD_SIZE) && (next - vaddr) >= PUD_SIZE) {
+ if (pud_none(pudp_get(pudp)) && IS_ALIGNED(vaddr, PUD_SIZE) &&
+ (next - vaddr) >= PUD_SIZE) {
phys_addr = memblock_phys_alloc(PUD_SIZE, PUD_SIZE);
if (phys_addr) {
set_pud(pudp, pfn_pud(PFN_DOWN(phys_addr), PAGE_KERNEL));
@@ -113,7 +115,7 @@ static void __init kasan_populate_p4d(pgd_t *pgd,
p4d_t *p4dp, *p;
unsigned long next;
- if (pgd_none(*pgd)) {
+ if (pgd_none(pgdp_get(pgd))) {
p = memblock_alloc(PTRS_PER_P4D * sizeof(p4d_t), PAGE_SIZE);
set_pgd(pgd, pfn_pgd(PFN_DOWN(__pa(p)), PAGE_TABLE));
}
@@ -123,7 +125,8 @@ static void __init kasan_populate_p4d(pgd_t *pgd,
do {
next = p4d_addr_end(vaddr, end);
- if (p4d_none(*p4dp) && IS_ALIGNED(vaddr, P4D_SIZE) && (next - vaddr) >= P4D_SIZE) {
+ if (p4d_none(p4dp_get(p4dp)) && IS_ALIGNED(vaddr, P4D_SIZE) &&
+ (next - vaddr) >= P4D_SIZE) {
phys_addr = memblock_phys_alloc(P4D_SIZE, P4D_SIZE);
if (phys_addr) {
set_p4d(p4dp, pfn_p4d(PFN_DOWN(phys_addr), PAGE_KERNEL));
@@ -145,7 +148,7 @@ static void __init kasan_populate_pgd(pgd_t *pgdp,
do {
next = pgd_addr_end(vaddr, end);
- if (pgd_none(*pgdp) && IS_ALIGNED(vaddr, PGDIR_SIZE) &&
+ if (pgd_none(pgdp_get(pgdp)) && IS_ALIGNED(vaddr, PGDIR_SIZE) &&
(next - vaddr) >= PGDIR_SIZE) {
phys_addr = memblock_phys_alloc(PGDIR_SIZE, PGDIR_SIZE);
if (phys_addr) {
@@ -168,7 +171,7 @@ static void __init kasan_early_clear_pud(p4d_t *p4dp,
if (!pgtable_l4_enabled) {
pudp = (pud_t *)p4dp;
} else {
- base_pud = pt_ops.get_pud_virt(pfn_to_phys(_p4d_pfn(*p4dp)));
+ base_pud = pt_ops.get_pud_virt(pfn_to_phys(_p4d_pfn(p4dp_get(p4dp))));
pudp = base_pud + pud_index(vaddr);
}
@@ -193,7 +196,7 @@ static void __init kasan_early_clear_p4d(pgd_t *pgdp,
if (!pgtable_l5_enabled) {
p4dp = (p4d_t *)pgdp;
} else {
- base_p4d = pt_ops.get_p4d_virt(pfn_to_phys(_pgd_pfn(*pgdp)));
+ base_p4d = pt_ops.get_p4d_virt(pfn_to_phys(_pgd_pfn(pgdp_get(pgdp))));
p4dp = base_p4d + p4d_index(vaddr);
}
@@ -239,14 +242,14 @@ static void __init kasan_early_populate_pud(p4d_t *p4dp,
if (!pgtable_l4_enabled) {
pudp = (pud_t *)p4dp;
} else {
- base_pud = pt_ops.get_pud_virt(pfn_to_phys(_p4d_pfn(*p4dp)));
+ base_pud = pt_ops.get_pud_virt(pfn_to_phys(_p4d_pfn(p4dp_get(p4dp))));
pudp = base_pud + pud_index(vaddr);
}
do {
next = pud_addr_end(vaddr, end);
- if (pud_none(*pudp) && IS_ALIGNED(vaddr, PUD_SIZE) &&
+ if (pud_none(pudp_get(pudp)) && IS_ALIGNED(vaddr, PUD_SIZE) &&
(next - vaddr) >= PUD_SIZE) {
phys_addr = __pa((uintptr_t)kasan_early_shadow_pmd);
set_pud(pudp, pfn_pud(PFN_DOWN(phys_addr), PAGE_TABLE));
@@ -277,14 +280,14 @@ static void __init kasan_early_populate_p4d(pgd_t *pgdp,
if (!pgtable_l5_enabled) {
p4dp = (p4d_t *)pgdp;
} else {
- base_p4d = pt_ops.get_p4d_virt(pfn_to_phys(_pgd_pfn(*pgdp)));
+ base_p4d = pt_ops.get_p4d_virt(pfn_to_phys(_pgd_pfn(pgdp_get(pgdp))));
p4dp = base_p4d + p4d_index(vaddr);
}
do {
next = p4d_addr_end(vaddr, end);
- if (p4d_none(*p4dp) && IS_ALIGNED(vaddr, P4D_SIZE) &&
+ if (p4d_none(p4dp_get(p4dp)) && IS_ALIGNED(vaddr, P4D_SIZE) &&
(next - vaddr) >= P4D_SIZE) {
phys_addr = __pa((uintptr_t)kasan_early_shadow_pud);
set_p4d(p4dp, pfn_p4d(PFN_DOWN(phys_addr), PAGE_TABLE));
@@ -305,7 +308,7 @@ static void __init kasan_early_populate_pgd(pgd_t *pgdp,
do {
next = pgd_addr_end(vaddr, end);
- if (pgd_none(*pgdp) && IS_ALIGNED(vaddr, PGDIR_SIZE) &&
+ if (pgd_none(pgdp_get(pgdp)) && IS_ALIGNED(vaddr, PGDIR_SIZE) &&
(next - vaddr) >= PGDIR_SIZE) {
phys_addr = __pa((uintptr_t)kasan_early_shadow_p4d);
set_pgd(pgdp, pfn_pgd(PFN_DOWN(phys_addr), PAGE_TABLE));
@@ -381,7 +384,7 @@ static void __init kasan_shallow_populate_pud(p4d_t *p4d,
do {
next = pud_addr_end(vaddr, end);
- if (pud_none(*pud_k)) {
+ if (pud_none(pudp_get(pud_k))) {
p = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
set_pud(pud_k, pfn_pud(PFN_DOWN(__pa(p)), PAGE_TABLE));
continue;
@@ -401,7 +404,7 @@ static void __init kasan_shallow_populate_p4d(pgd_t *pgd,
do {
next = p4d_addr_end(vaddr, end);
- if (p4d_none(*p4d_k)) {
+ if (p4d_none(p4dp_get(p4d_k))) {
p = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
set_p4d(p4d_k, pfn_p4d(PFN_DOWN(__pa(p)), PAGE_TABLE));
continue;
@@ -420,7 +423,7 @@ static void __init kasan_shallow_populate_pgd(unsigned long vaddr, unsigned long
do {
next = pgd_addr_end(vaddr, end);
- if (pgd_none(*pgd_k)) {
+ if (pgd_none(pgdp_get(pgd_k))) {
p = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
set_pgd(pgd_k, pfn_pgd(PFN_DOWN(__pa(p)), PAGE_TABLE));
continue;
@@ -438,6 +441,14 @@ static void __init kasan_shallow_populate(void *start, void *end)
kasan_shallow_populate_pgd(vaddr, vend);
}
+#ifdef CONFIG_KASAN_VMALLOC
+void __init kasan_populate_early_vm_area_shadow(void *start, unsigned long size)
+{
+ kasan_populate(kasan_mem_to_shadow(start),
+ kasan_mem_to_shadow(start + size));
+}
+#endif
+
static void __init create_tmp_mapping(void)
{
void *ptr;
@@ -451,7 +462,7 @@ static void __init create_tmp_mapping(void)
/* Copy the last p4d since it is shared with the kernel mapping. */
if (pgtable_l5_enabled) {
- ptr = (p4d_t *)pgd_page_vaddr(*pgd_offset_k(KASAN_SHADOW_END));
+ ptr = (p4d_t *)pgd_page_vaddr(pgdp_get(pgd_offset_k(KASAN_SHADOW_END)));
memcpy(tmp_p4d, ptr, sizeof(p4d_t) * PTRS_PER_P4D);
set_pgd(&tmp_pg_dir[pgd_index(KASAN_SHADOW_END)],
pfn_pgd(PFN_DOWN(__pa(tmp_p4d)), PAGE_TABLE));
@@ -462,7 +473,7 @@ static void __init create_tmp_mapping(void)
/* Copy the last pud since it is shared with the kernel mapping. */
if (pgtable_l4_enabled) {
- ptr = (pud_t *)p4d_page_vaddr(*(base_p4d + p4d_index(KASAN_SHADOW_END)));
+ ptr = (pud_t *)p4d_page_vaddr(p4dp_get(base_p4d + p4d_index(KASAN_SHADOW_END)));
memcpy(tmp_pud, ptr, sizeof(pud_t) * PTRS_PER_PUD);
set_p4d(&base_p4d[p4d_index(KASAN_SHADOW_END)],
pfn_p4d(PFN_DOWN(__pa(tmp_pud)), PAGE_TABLE));
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-10 21:05:43 +0000