[xen staging] xen/page-defs: address violation of MISRA C Rule 20.7

[patchbot@xxxxxxx]

commit 0d02b75d7cd3a24989d7982f6a0b0c8da580074e
Author:     Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
AuthorDate: Thu Apr 25 09:49:04 2024 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Apr 25 09:49:04 2024 +0200

    xen/page-defs: address violation of MISRA C Rule 20.7
    
    MISRA C Rule 20.7 states: "Expressions resulting from the expansion
    of macro parameters shall be enclosed in parentheses". Therefore, some
    macro definitions should gain additional parentheses to ensure that all
    current and future users will be safe with respect to expansions that
    can possibly alter the semantics of the passed-in macro parameter.
    
    No functional change.
    
    Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/include/xen/page-defs.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/include/xen/page-defs.h b/xen/include/xen/page-defs.h
index 540f8b0b64..682da6b7b4 100644
--- a/xen/include/xen/page-defs.h
+++ b/xen/include/xen/page-defs.h
@@ -4,7 +4,8 @@
 /* Helpers for different page granularities. */
 #define PAGE_SIZE_GRAN(gran)        ((paddr_t)1 << PAGE_SHIFT_##gran)
 #define PAGE_MASK_GRAN(gran)        (-PAGE_SIZE_GRAN(gran))
-#define PAGE_ALIGN_GRAN(gran, addr) ((addr + ~PAGE_MASK_##gran) & 
PAGE_MASK_##gran)
+#define PAGE_ALIGN_GRAN(gran, addr) (((addr) + ~PAGE_MASK_##gran) & \
+                                     PAGE_MASK_##gran)
 
 #define PAGE_SHIFT_4K               12
 #define PAGE_SIZE_4K                PAGE_SIZE_GRAN(4K)
--
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