From: Will Deacon <will.deacon@arm.com>
Date: Mon, 10 Dec 2018 19:20:23 +0000 (+0000)
Subject: arm64: mm: EXPORT vabits_user to modules
X-Git-Tag: v5.0-rc1~166^2~28
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=4a1daf29d33d766a1a6f03015b93bfb01b93f46e;p=linux.git

arm64: mm: EXPORT vabits_user to modules

TASK_SIZE is defined using the vabits_user variable for 64-bit tasks,
so ensure that this variable is exported to modules to avoid the
following build breakage with allmodconfig:

 | ERROR: "vabits_user" [lib/test_user_copy.ko] undefined!
 | ERROR: "vabits_user" [drivers/misc/lkdtm/lkdtm.ko] undefined!
 | ERROR: "vabits_user" [drivers/infiniband/hw/mlx5/mlx5_ib.ko] undefined!

Signed-off-by: Will Deacon <will.deacon@arm.com>
---

diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 0d3eacc4bfbb..674c409a8ce4 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -53,6 +53,7 @@
 u64 idmap_t0sz = TCR_T0SZ(VA_BITS);
 u64 idmap_ptrs_per_pgd = PTRS_PER_PGD;
 u64 vabits_user __ro_after_init;
+EXPORT_SYMBOL(vabits_user);
 
 u64 kimage_voffset __ro_after_init;
 EXPORT_SYMBOL(kimage_voffset);