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mm/mmap: build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT

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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.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Anshuman Khandual <[email protected]>
Reviewed-by: Christophe Leroy <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Brian Cain <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Chris Zankel <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Dinh Nguyen <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Guo Ren <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Cc: Jeff Dike <[email protected]>
Cc: Jonas Bonn <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Paul Walmsley <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: Russell King <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Cc: Stafford Horne <[email protected]>
Cc: Thomas Bogendoerfer <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: WANG Xuerui <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
This commit is contained in:
Anshuman Khandual authored and akpm committed 2022-07-17 17:14:38 -07:00
1 parent 4867fbbdd6
commit 09095f7413
2 files changed
+2 -5
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include/linux/mm.h
+1 -1
View File
@@ -425,7 +425,7 @@ 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
mm/mmap.c
+1 -4
View File
@@ -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 */