diff mbox series

[V6,07/26] mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT

Message ID 20220630051630.1718927-8-anshuman.khandual@arm.com (mailing list archive)
State Awaiting Upstream
Headers show
Series mm/mmap: Drop __SXXX/__PXXX macros from across platforms | expand

Commit Message

Anshuman Khandual June 30, 2022, 5:16 a.m. UTC 
Now that protection_map[] has been moved inside those platforms that enable
ARCH_HAS_VM_GET_PAGE_PROT. Hence generic protection_map[] array now can be
protected with CONFIG_ARCH_HAS_VM_GET_PAGE_PROT intead of __P000.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 include/linux/mm.h | 2 +-
 mm/mmap.c          | 5 +----
 2 files changed, 2 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0ff0a1bad091..07b56995e0fe 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -424,7 +424,7 @@  extern unsigned int kobjsize(const void *objp);
  * mapping from the currently active vm_flags protection bits (the
  * low four bits) to a page protection mask..
  */
-#ifdef __P000
+#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
 extern pgprot_t protection_map[16];
 #endif
 
diff --git a/mm/mmap.c b/mm/mmap.c
index b46d5e931bb3..2cc722e162fa 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -81,7 +81,7 @@  static void unmap_region(struct mm_struct *mm,
 		struct vm_area_struct *vma, struct vm_area_struct *prev,
 		unsigned long start, unsigned long end);
 
-#ifdef __P000
+#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
 pgprot_t protection_map[16] __ro_after_init = {
 	[VM_NONE]					= __P000,
 	[VM_READ]					= __P001,
@@ -100,9 +100,6 @@  pgprot_t protection_map[16] __ro_after_init = {
 	[VM_SHARED | VM_EXEC | VM_WRITE]		= __S110,
 	[VM_SHARED | VM_EXEC | VM_WRITE | VM_READ]	= __S111
 };
-#endif
-
-#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
 DECLARE_VM_GET_PAGE_PROT
 #endif	/* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */