powerpc/mm/radix: Move function from radix.h to pgtable-radix.c

In later patch we will update them which require them to be moved
to pgtable-radix.c. Keeping the function in radix.h results in
compile warning as below.

./arch/powerpc/include/asm/book3s/64/radix.h: In function ‘radix__ptep_set_access_flags’:
./arch/powerpc/include/asm/book3s/64/radix.h:196:28: error: dereferencing pointer to incomplete type ‘struct vm_area_struct’
  struct mm_struct *mm = vma->vm_mm;
                            ^~
./arch/powerpc/include/asm/book3s/64/radix.h:204:6: error: implicit declaration of function ‘atomic_read’; did you mean ‘__atomic_load’? [-Werror=implicit-function-declaration]
      atomic_read(&mm->context.copros) > 0) {
      ^~~~~~~~~~~
      __atomic_load
./arch/powerpc/include/asm/book3s/64/radix.h:204:21: error: dereferencing pointer to incomplete type ‘struct mm_struct’
      atomic_read(&mm->context.copros) > 0) {

Instead of fixing header dependencies, we move the function to pgtable-radix.c
Also the function is now large to be a static inline . Doing the
move in separate patch helps in review.

No functional change in this patch. Only code movement.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 22 insertions, 0 deletions

diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index ce24d72ea679..a6eec41dd347 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -1084,3 +1084,25 @@ int radix__has_transparent_hugepage(void)
 	return 0;
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+
+void radix__ptep_set_access_flags(struct mm_struct *mm,
+				  pte_t *ptep, pte_t entry,
+				  unsigned long address)
+{
+	unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED |
+					      _PAGE_RW | _PAGE_EXEC);
+
+	if (cpu_has_feature(CPU_FTR_POWER9_DD1)) {
+		unsigned long old_pte, new_pte;
+
+		old_pte = __radix_pte_update(ptep, ~0, 0);
+		/*
+		 * new value of pte
+		 */
+		new_pte = old_pte | set;
+		radix__flush_tlb_pte_p9_dd1(old_pte, mm, address);
+		__radix_pte_update(ptep, 0, new_pte);
+	} else
+		__radix_pte_update(ptep, 0, set);
+	asm volatile("ptesync" : : : "memory");
+}