kvm: arm64: Enable hardware updates of the Access Flag for Stage 2 page tables

[deliverable/linux.git] / arch / arm64 / include / asm / pgtable.h

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index dda4aa9ba3f8c5c94cf572285f2904d6df5452b5..f1d5afdb12dbf6d09dcabca6b9ac3d88158ddc12 100644 (file)
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -532,14 +532,12 @@ static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
  * Atomic pte/pmd modifications.
  */
 #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
-                                           unsigned long address,
-                                           pte_t *ptep)
+static inline int __ptep_test_and_clear_young(pte_t *ptep)
 {
        pteval_t pteval;
        unsigned int tmp, res;
 
-       asm volatile("//        ptep_test_and_clear_young\n"
+       asm volatile("//        __ptep_test_and_clear_young\n"
        "       prfm    pstl1strm, %2\n"
        "1:     ldxr    %0, %2\n"
        "       ubfx    %w3, %w0, %5, #1        // extract PTE_AF (young)\n"
@@ -552,6 +550,13 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
        return res;
 }
 
+static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
+                                           unsigned long address,
+                                           pte_t *ptep)
+{
+       return __ptep_test_and_clear_young(ptep);
+}
+
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 #define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG
 static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma,