[xen staging] xen: page_alloc: Don't open-code IS_ALIGNED()

[patchbot@xxxxxxx]

commit 7a2b7edad5d5508e2d6a2e5d0ad0399ae16e9c8e
Author:     Julien Grall <jgrall@xxxxxxxxxx>
AuthorDate: Wed Jul 20 19:22:34 2022 +0100
Commit:     Julien Grall <jgrall@xxxxxxxxxx>
CommitDate: Wed Jul 20 19:26:19 2022 +0100

    xen: page_alloc: Don't open-code IS_ALIGNED()
    
    init_heap_pages() is using an open-code version of IS_ALIGNED(). Replace
    it to improve the readability of the code.
    
    No functional change intended.
    
    Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
    Reviewed-by: Wei Chen <Wei.Chen@xxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/common/page_alloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index 6ca986584d..013f3d142e 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -1827,7 +1827,7 @@ static void init_heap_pages(
             unsigned long s = mfn_x(page_to_mfn(pg + i));
             unsigned long e = mfn_x(mfn_add(page_to_mfn(pg + nr_pages - 1), 
1));
             bool use_tail = (nid == phys_to_nid(pfn_to_paddr(e - 1))) &&
-                            !(s & ((1UL << MAX_ORDER) - 1)) &&
+                            IS_ALIGNED(s, 1UL << MAX_ORDER) &&
                             (find_first_set_bit(e) <= find_first_set_bit(s));
             unsigned long n;
 
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