[XEN PATCH 10/11] x86/hvm: address violations of Rule 20.7

[Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>]

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>
---
 xen/arch/x86/hvm/hvm.c              | 6 +++---
 xen/arch/x86/include/asm/hvm/save.h | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index c75959588c0e..0ce45b177cf4 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -1066,9 +1066,9 @@ static int cf_check hvm_load_cpu_ctxt(struct domain *d, 
hvm_domain_context_t *h)
     /* Older Xen versions used to save the segment arbytes directly 
      * from the VMCS on Intel hosts.  Detect this and rearrange them
      * into the struct segment_register format. */
-#define UNFOLD_ARBYTES(_r)                          \
-    if ( (_r & 0xf000) && !(_r & 0x0f00) )          \
-        _r = ((_r & 0xff) | ((_r >> 4) & 0xf00))
+#define UNFOLD_ARBYTES(_r)                              \
+    if ( ((_r) & 0xf000) && !((_r) & 0x0f00) )          \
+        (_r) = (((_r) & 0xff) | (((_r) >> 4) & 0xf00))
     UNFOLD_ARBYTES(ctxt.cs_arbytes);
     UNFOLD_ARBYTES(ctxt.ds_arbytes);
     UNFOLD_ARBYTES(ctxt.es_arbytes);
diff --git a/xen/arch/x86/include/asm/hvm/save.h 
b/xen/arch/x86/include/asm/hvm/save.h
index 04a47ffcc40a..2d4b591aa3e2 100644
--- a/xen/arch/x86/include/asm/hvm/save.h
+++ b/xen/arch/x86/include/asm/hvm/save.h
@@ -128,9 +128,9 @@ static int __init cf_check 
__hvm_register_##_x##_save_and_restore(void)   \
 {                                                                         \
     hvm_register_savevm(HVM_SAVE_CODE(_x),                                \
                         #_x,                                              \
-                        &_save,                                           \
+                        &(_save),                                         \
                         check,                                            \
-                        &_load,                                           \
+                        &(_load),                                         \
                         (_num) * (HVM_SAVE_LENGTH(_x)                     \
                                   + sizeof (struct hvm_save_descriptor)), \
                         _k);                                              \
-- 
2.34.1