On Tue, Jun 13 2023 at 22:03, Chang S. Bae wrote:
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();
Well, that's _before_ xstate initialization and I couldn't convince
myself that it's good enough. All of this is such a horrible mess...
