[xen staging] xen/page: fix return type of online_page()

[patchbot@xxxxxxx]

commit df56af1d7af91b2383bc71bc8b292c4a2521424d
Author:     Penny Zheng <Penny.Zheng@xxxxxxx>
AuthorDate: Fri Mar 14 10:16:28 2025 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Mar 14 10:16:28 2025 +0100

    xen/page: fix return type of online_page()
    
    This commit fixes return type of online_page(), which shall be int
    to include correct error value.
    
    Signed-off-by: Penny Zheng <Penny.Zheng@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/common/page_alloc.c | 2 +-
 xen/include/xen/mm.h    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index 5f9c9305ef..bd4538c28d 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -1763,7 +1763,7 @@ int offline_page(mfn_t mfn, int broken, uint32_t *status)
  *   The caller should make sure end_pfn <= max_page,
  *   if not, expand_pages() should be called prior to online_page().
  */
-unsigned int online_page(mfn_t mfn, uint32_t *status)
+int online_page(mfn_t mfn, uint32_t *status)
 {
     unsigned long x, nx, y;
     struct page_info *pg;
diff --git a/xen/include/xen/mm.h b/xen/include/xen/mm.h
index 16f733281a..ae1c48a615 100644
--- a/xen/include/xen/mm.h
+++ b/xen/include/xen/mm.h
@@ -144,7 +144,7 @@ unsigned long avail_domheap_pages(void);
 unsigned long avail_node_heap_pages(unsigned int nodeid);
 #define alloc_domheap_page(d,f) (alloc_domheap_pages(d,0,f))
 #define free_domheap_page(p)  (free_domheap_pages(p,0))
-unsigned int online_page(mfn_t mfn, uint32_t *status);
+int online_page(mfn_t mfn, uint32_t *status);
 int offline_page(mfn_t mfn, int broken, uint32_t *status);
 int query_page_offline(mfn_t mfn, uint32_t *status);
 
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