[xen staging] x86/hvm: address violations of MISRA C Rule 20.7

[patchbot@xxxxxxx]

commit 5811fb4816477d14ac764e63073149c9281cb18c
Author:     Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
AuthorDate: Wed Apr 3 09:36:07 2024 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Apr 3 09:36:07 2024 +0200

    x86/hvm: address violations 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/arch/x86/hvm/domain.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/hvm/domain.c b/xen/arch/x86/hvm/domain.c
index 7f6e362a70..048f29ae49 100644
--- a/xen/arch/x86/hvm/domain.c
+++ b/xen/arch/x86/hvm/domain.c
@@ -132,9 +132,9 @@ int arch_set_info_hvm_guest(struct vcpu *v, const struct 
vcpu_hvm_context *ctx)
     s = (struct segment_register)                                           \
         { 0, { (r)->s ## _ar }, (r)->s ## _limit, (r)->s ## _base };        \
     /* Set accessed / busy bit for present segments. */                     \
-    if ( s.p )                                                              \
-        s.type |= (x86_seg_##s != x86_seg_tr ? 1 : 2);                      \
-    check_segment(&s, x86_seg_ ## s); })
+    if ( (s).p )                                                            \
+        (s).type |= (x86_seg_ ## s != x86_seg_tr ? 1 : 2);                  \
+    check_segment(&(s), x86_seg_ ## s); })
 
         rc = SEG(cs, regs);
         rc |= SEG(ds, regs);
--
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