[tip:x86/paravirt] x86/xen: Make xen_reservation_lock static

[tip-bot for Juergen Gross]

Commit-ID:  4f2d7af70256b258a6a5729a1d33d5ecb2330f8f
Gitweb:     https://git.kernel.org/tip/4f2d7af70256b258a6a5729a1d33d5ecb2330f8f
Author:     Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Wed, 5 Sep 2018 07:36:34 +0200
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Thu, 6 Sep 2018 14:37:37 +0200

x86/xen: Make xen_reservation_lock static

No users outside of that file.

Fixes: f030aade9165 ("x86/xen: Move pv specific parts of arch/x86/xen/mmu.c to mmu_pv.c")
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
Cc: boris.ostrovsky@xxxxxxxxxx
Cc: hpa@xxxxxxxxx
Link: https://lkml.kernel.org/r/20180905053634.13648-1-jgross@xxxxxxxx

---
 arch/x86/xen/mmu_pv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index bf30fa03582e..7ada9e489f65 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -104,7 +104,7 @@ static pud_t level3_user_vsyscall[PTRS_PER_PUD] __page_aligned_bss;
  * Protects atomic reservation decrease/increase against concurrent increases.
  * Also protects non-atomic updates of current_pages and balloon lists.
  */
-DEFINE_SPINLOCK(xen_reservation_lock);
+static DEFINE_SPINLOCK(xen_reservation_lock);
 
 /*
  * Note about cr3 (pagetable base) values: