[xen staging] page_alloc: fix MISRA C 2012 Rule 8.7 violation

[patchbot@xxxxxxx]

commit 56ff13f640b400f5e68e0450b7b24f6deae13b63
Author:     Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
AuthorDate: Tue Jun 28 17:06:37 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Jun 28 17:06:37 2022 +0200

    page_alloc: fix MISRA C 2012 Rule 8.7 violation
    
    The variables page_offlined_list and page_broken_list are referenced only
    in page_alloc.c.
    Change their linkage from external to internal by adding the storage-class
    specifier static to their definitions.
    
    This patch also aims to resolve indirectly a MISRA C 2012 Rule 8.4 violation
    warning.
    
    Signed-off-by: Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/common/page_alloc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index 000ae6b972..fe0e15429a 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -235,9 +235,9 @@ static unsigned int dma_bitsize;
 integer_param("dma_bits", dma_bitsize);
 
 /* Offlined page list, protected by heap_lock. */
-PAGE_LIST_HEAD(page_offlined_list);
+static PAGE_LIST_HEAD(page_offlined_list);
 /* Broken page list, protected by heap_lock. */
-PAGE_LIST_HEAD(page_broken_list);
+static PAGE_LIST_HEAD(page_broken_list);
 
 /*************************
  * BOOT-TIME ALLOCATOR
--
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