Re: [patch 17/17] x86/fpu: Move FPU initialization into arch_cpu_finalize_init()

[Chang S. Bae]

On 6/13/2023 4:39 PM, Thomas Gleixner wrote:
  
@@ -2396,6 +2393,13 @@ void __init arch_cpu_finalize_init(void)
                        '0' + (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
        }
  
+	/*
+        * Must be before alternatives because it might set or clear
+        * feature bits.
+        */
+       fpu__init_system();
+       fpu__init_cpu();

fpu__init_cpu() appears to be duplicated here because fpu__init_system() 
invoked this already:

void __init fpu__init_system(void)
{
...
        /*
         * The FPU has to be operational for some of the
         * later FPU init activities:
         */
        fpu__init_cpu();
...
}

https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/tree/arch/x86/kernel/fpu/init.c?h=init#n223

Thanks,
Chang


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