diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 5295cbafc92e..7ada7bd03a32 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -23,7 +23,7 @@
  * Represents the initial FPU state. It's mostly (but not completely) zeroes,
  * depending on the FPU hardware format:
  */
-union fpregs_state init_fpstate __read_mostly;
+union fpregs_state init_fpstate __ro_after_init;
 
 /*
  * Track whether the kernel is using the FPU state