x86/fpu: Remove run-once init quirks

Remove various boot quirks that came from the old code.

The new code is cleanly split up into per-system and per-cpu
init sequences, and system init functions are only called once.

Remove the run-once quirks.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/kernel/fpu/init.c

@@ -143,12 +143,6 @@ EXPORT_SYMBOL_GPL(xstate_size);
  */
 static void fpu__init_system_xstate_size_legacy(void)
 {
-	static bool on_boot_cpu = 1;
-
-	if (!on_boot_cpu)
-		return;
-	on_boot_cpu = 0;
-
 	/*
 	 * Note that xstate_size might be overwriten later during
 	 * fpu__init_system_xstate().

arch/x86/kernel/fpu/xstate.c

@@ -658,12 +658,6 @@ void setup_xstate_comp(void)
  */
 static void setup_init_fpu_buf(void)
 {
-	static int on_boot_cpu = 1;
-
-	if (!on_boot_cpu)
-		return;
-	on_boot_cpu = 0;
-
 	if (!cpu_has_xsave)
 		return;
 
@@ -719,11 +713,6 @@ static void __init init_xstate_size(void)
 void fpu__init_system_xstate(void)
 {
 	unsigned int eax, ebx, ecx, edx;
-	static bool on_boot_cpu = 1;
-
-	if (!on_boot_cpu)
-		return;
-	on_boot_cpu = 0;
 
 	if (!cpu_has_xsave) {
 		pr_info("x86/fpu: Legacy x87 FPU detected.\n");