[xen staging] x86/intel: Move mcu_opt_ctrl_* into __ro_after_init

[patchbot@xxxxxxx]

commit 88b4ea080cd2ee502b08754ed7adbd7ee5e30a89
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Wed Apr 30 16:18:13 2025 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Wed Apr 30 17:02:09 2025 +0100

    x86/intel: Move mcu_opt_ctrl_* into __ro_after_init
    
    They're only modified by set_in_mcu_opt_ctrl() which is an __init function.
    
    No functional change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/cpu/intel.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/cpu/intel.c b/xen/arch/x86/cpu/intel.c
index 63f65ea5b0..12c3ff65e0 100644
--- a/xen/arch/x86/cpu/intel.c
+++ b/xen/arch/x86/cpu/intel.c
@@ -21,8 +21,8 @@
  * MSR_MCU_OPT_CTRL is a collection of unrelated functionality, with separate
  * enablement requirements, but which want to be consistent across the system.
  */
-static uint32_t __read_mostly mcu_opt_ctrl_mask;
-static uint32_t __read_mostly mcu_opt_ctrl_val;
+static uint32_t __ro_after_init mcu_opt_ctrl_mask;
+static uint32_t __ro_after_init mcu_opt_ctrl_val;
 
 void update_mcu_opt_ctrl(void)
 {
--
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