[xen staging] Arm/guestcopy: avoid use of "current" in compound literals

[patchbot@xxxxxxx]

commit 7963131d640f142c16dd6f835cfe3b8a2f347792
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue Sep 22 09:15:48 2026 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Sep 22 09:15:48 2026 +0200

    Arm/guestcopy: avoid use of "current" in compound literals
    
    Compound literals are also covered by Misra C:2012 rule 13.1
    ("Initializer lists shall not contain persistent side effects"), and
    (sadly?) that rule also applies to lists with just a single element, or
    more generally with just a single side effect. Use intermediate variables
    to overcome this.
    
    No functional change intended.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
---
 xen/arch/arm/guestcopy.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/xen/arch/arm/guestcopy.c b/xen/arch/arm/guestcopy.c
index 2235d23ba5..cec33049b3 100644
--- a/xen/arch/arm/guestcopy.c
+++ b/xen/arch/arm/guestcopy.c
@@ -109,29 +109,37 @@ static unsigned long copy_guest(void *buf, uint64_t addr, 
unsigned long len,
 
 unsigned long raw_copy_to_guest(void *to, const void *from, unsigned int len)
 {
+    struct vcpu *curr = current;
+
     return copy_guest((void *)from, /* COPY_to_guest doesn't modify */
-                      (vaddr_t)to, len, GVA_INFO(current),
+                      (vaddr_t)to, len, GVA_INFO(curr),
                       COPY_to_guest | COPY_linear);
 }
 
 unsigned long raw_copy_to_guest_flush_dcache(void *to, const void *from,
                                              unsigned int len)
 {
+    struct vcpu *curr = current;
+
     return copy_guest((void *)from, /* COPY_to_guest doesn't modify */
-                      (vaddr_t)to, len, GVA_INFO(current),
+                      (vaddr_t)to, len, GVA_INFO(curr),
                       COPY_to_guest | COPY_flush_dcache | COPY_linear);
 }
 
 unsigned long raw_clear_guest(void *to, unsigned int len)
 {
-    return copy_guest(NULL, (vaddr_t)to, len, GVA_INFO(current),
+    struct vcpu *curr = current;
+
+    return copy_guest(NULL, (vaddr_t)to, len, GVA_INFO(curr),
                       COPY_to_guest | COPY_linear);
 }
 
 unsigned long raw_copy_from_guest(void *to, const void __user *from,
                                   unsigned int len)
 {
-    return copy_guest(to, (vaddr_t)from, len, GVA_INFO(current),
+    struct vcpu *curr = current;
+
+    return copy_guest(to, (vaddr_t)from, len, GVA_INFO(curr),
                       COPY_from_guest | COPY_linear);
 }
 
--
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