[xen master] x86/IRQ: use LOCK-free bit setting in init_irq_data()

[patchbot@xxxxxxx]

commit a71f56be01c752bf87e2c4bf6ee08d9225d6b429
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Thu Nov 13 09:09:11 2025 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Nov 13 09:09:11 2025 +0100

    x86/IRQ: use LOCK-free bit setting in init_irq_data()
    
    Much like done later in the function, syscall and hypercall vectors can
    have their bits set without use of LOCKed accesses.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/irq.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c
index ba2f02eb0c..80f7417d21 100644
--- a/xen/arch/x86/irq.c
+++ b/xen/arch/x86/irq.c
@@ -450,12 +450,12 @@ int __init init_irq_data(void)
 
 #ifdef CONFIG_PV
     /* Never allocate the Linux/BSD fast-trap vector. */
-    set_bit(LEGACY_SYSCALL_VECTOR, used_vectors);
+    __set_bit(LEGACY_SYSCALL_VECTOR, used_vectors);
 #endif
 
 #ifdef CONFIG_PV32
     /* Never allocate the hypercall vector. */
-    set_bit(HYPERCALL_VECTOR, used_vectors);
+    __set_bit(HYPERCALL_VECTOR, used_vectors);
 #endif
     
     /*
--
generated by git-patchbot for /home/xen/git/xen.git#master