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Diffstat (limited to 'arch/x86/include/asm/pgtable.h')
-rw-r--r--arch/x86/include/asm/pgtable.h31
1 files changed, 28 insertions, 3 deletions
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index a34430b7af4a..8a9432fb3802 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -27,6 +27,7 @@
#include <asm/pkru.h>
#include <asm/fpu/api.h>
#include <asm-generic/pgtable_uffd.h>
+#include <linux/page_table_check.h>
extern pgd_t early_top_pgt[PTRS_PER_PGD];
bool __init __early_make_pgtable(unsigned long address, pmdval_t pmd);
@@ -753,7 +754,7 @@ static inline bool pte_accessible(struct mm_struct *mm, pte_t a)
return true;
if ((pte_flags(a) & _PAGE_PROTNONE) &&
- mm_tlb_flush_pending(mm))
+ atomic_read(&mm->tlb_flush_pending))
return true;
return false;
@@ -1007,18 +1008,21 @@ static inline pud_t native_local_pudp_get_and_clear(pud_t *pudp)
static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
+ page_table_check_pte_set(mm, addr, ptep, pte);
set_pte(ptep, pte);
}
static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t pmd)
{
+ page_table_check_pmd_set(mm, addr, pmdp, pmd);
set_pmd(pmdp, pmd);
}
static inline void set_pud_at(struct mm_struct *mm, unsigned long addr,
pud_t *pudp, pud_t pud)
{
+ page_table_check_pud_set(mm, addr, pudp, pud);
native_set_pud(pudp, pud);
}
@@ -1049,6 +1053,7 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
pte_t pte = native_ptep_get_and_clear(ptep);
+ page_table_check_pte_clear(mm, addr, pte);
return pte;
}
@@ -1064,12 +1069,23 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm,
* care about updates and native needs no locking
*/
pte = native_local_ptep_get_and_clear(ptep);
+ page_table_check_pte_clear(mm, addr, pte);
} else {
pte = ptep_get_and_clear(mm, addr, ptep);
}
return pte;
}
+#define __HAVE_ARCH_PTEP_CLEAR
+static inline void ptep_clear(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep)
+{
+ if (IS_ENABLED(CONFIG_PAGE_TABLE_CHECK))
+ ptep_get_and_clear(mm, addr, ptep);
+ else
+ pte_clear(mm, addr, ptep);
+}
+
#define __HAVE_ARCH_PTEP_SET_WRPROTECT
static inline void ptep_set_wrprotect(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
@@ -1110,14 +1126,22 @@ static inline int pmd_write(pmd_t pmd)
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp)
{
- return native_pmdp_get_and_clear(pmdp);
+ pmd_t pmd = native_pmdp_get_and_clear(pmdp);
+
+ page_table_check_pmd_clear(mm, addr, pmd);
+
+ return pmd;
}
#define __HAVE_ARCH_PUDP_HUGE_GET_AND_CLEAR
static inline pud_t pudp_huge_get_and_clear(struct mm_struct *mm,
unsigned long addr, pud_t *pudp)
{
- return native_pudp_get_and_clear(pudp);
+ pud_t pud = native_pudp_get_and_clear(pudp);
+
+ page_table_check_pud_clear(mm, addr, pud);
+
+ return pud;
}
#define __HAVE_ARCH_PMDP_SET_WRPROTECT
@@ -1138,6 +1162,7 @@ static inline int pud_write(pud_t pud)
static inline pmd_t pmdp_establish(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp, pmd_t pmd)
{
+ page_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd);
if (IS_ENABLED(CONFIG_SMP)) {
return xchg(pmdp, pmd);
} else {