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authorAnshuman Khandual <anshuman.khandual@arm.com>2022-07-11 10:06:00 +0300
committerakpm <akpm@linux-foundation.org>2022-07-18 03:14:41 +0300
commit3d923c5f1e21ad491acd4c0d62bf2481ce94016c (patch)
tree67f6c9e25c8d5b98a02b962b32fa4ad7e879eadd /mm/mmap.c
parent34516fd83fa122e54a261b74e419c16aad5317f0 (diff)
downloadlinux-3d923c5f1e21ad491acd4c0d62bf2481ce94016c.tar.xz
mm/mmap: drop ARCH_HAS_VM_GET_PAGE_PROT
Now all the platforms enable ARCH_HAS_GET_PAGE_PROT. They define and export own vm_get_page_prot() whether custom or standard DECLARE_VM_GET_PAGE_PROT. Hence there is no need for default generic fallback for vm_get_page_prot(). Just drop this fallback and also ARCH_HAS_GET_PAGE_PROT mechanism. Link: https://lkml.kernel.org/r/20220711070600.2378316-27-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Brian Cain <bcain@quicinc.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
-rw-r--r--mm/mmap.c22
1 files changed, 0 insertions, 22 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index 2a58a9cd0752..edf27a2789a2 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -81,28 +81,6 @@ static void unmap_region(struct mm_struct *mm,
struct vm_area_struct *vma, struct vm_area_struct *prev,
unsigned long start, unsigned long end);
-#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
-pgprot_t protection_map[16] __ro_after_init = {
- [VM_NONE] = __P000,
- [VM_READ] = __P001,
- [VM_WRITE] = __P010,
- [VM_WRITE | VM_READ] = __P011,
- [VM_EXEC] = __P100,
- [VM_EXEC | VM_READ] = __P101,
- [VM_EXEC | VM_WRITE] = __P110,
- [VM_EXEC | VM_WRITE | VM_READ] = __P111,
- [VM_SHARED] = __S000,
- [VM_SHARED | VM_READ] = __S001,
- [VM_SHARED | VM_WRITE] = __S010,
- [VM_SHARED | VM_WRITE | VM_READ] = __S011,
- [VM_SHARED | VM_EXEC] = __S100,
- [VM_SHARED | VM_EXEC | VM_READ] = __S101,
- [VM_SHARED | VM_EXEC | VM_WRITE] = __S110,
- [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111
-};
-DECLARE_VM_GET_PAGE_PROT
-#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
-
static pgprot_t vm_pgprot_modify(pgprot_t oldprot, unsigned long vm_flags)
{
return pgprot_modify(oldprot, vm_get_page_prot(vm_flags));