From: Jisheng Zhang <jszhang@marvell.com>
Date: Mon, 15 Aug 2016 06:45:45 +0000 (+0800)
Subject: UPSTREAM: arm64: vdso: constify vm_special_mapping used for aarch32 vectors page
X-Git-Tag: release-20171130_firefly~4^2~100^2~169
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b18f4800124818b2412f995a42ae9224ddfdafea;p=firefly-linux-kernel-4.4.55.git

UPSTREAM: arm64: vdso: constify vm_special_mapping used for aarch32 vectors page

(cherry pick from commit b6d081bddf397026575a437b603b118dff2606ff)

The vm_special_mapping spec which is used for aarch32 vectors page is
never modified, so mark it as const.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Bug: 20045882
Bug: 19198045
Change-Id: If1afd11bfeefee45a2b96634b18143937a773a14
---

diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
index 0949b4812887..3b8acfae7797 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -88,7 +88,7 @@ int aarch32_setup_vectors_page(struct linux_binprm *bprm, int uses_interp)
 {
 	struct mm_struct *mm = current->mm;
 	unsigned long addr = AARCH32_VECTORS_BASE;
-	static struct vm_special_mapping spec = {
+	static const struct vm_special_mapping spec = {
 		.name	= "[vectors]",
 		.pages	= vectors_page,