x86/fpu: Cleanup the on_boot_cpu clutter
Defensive programming is useful, but this on_boot_cpu debug is really silly. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20211015011538.665080855@linutronix.de
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@ -192,11 +192,6 @@ static void __init fpu__init_task_struct_size(void)
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*/
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static void __init fpu__init_system_xstate_size_legacy(void)
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{
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static int on_boot_cpu __initdata = 1;
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WARN_ON_FPU(!on_boot_cpu);
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on_boot_cpu = 0;
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/*
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* Note that xstate sizes might be overwritten later during
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* fpu__init_system_xstate().
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@ -216,15 +211,6 @@ static void __init fpu__init_system_xstate_size_legacy(void)
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fpu_user_xstate_size = fpu_kernel_xstate_size;
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}
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/* Legacy code to initialize eager fpu mode. */
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static void __init fpu__init_system_ctx_switch(void)
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{
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static bool on_boot_cpu __initdata = 1;
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WARN_ON_FPU(!on_boot_cpu);
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on_boot_cpu = 0;
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}
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/*
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* Called on the boot CPU once per system bootup, to set up the initial
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* FPU state that is later cloned into all processes:
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@ -243,6 +229,4 @@ void __init fpu__init_system(struct cpuinfo_x86 *c)
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fpu__init_system_xstate_size_legacy();
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fpu__init_system_xstate();
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fpu__init_task_struct_size();
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fpu__init_system_ctx_switch();
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}
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@ -379,15 +379,10 @@ static void __init print_xstate_offset_size(void)
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*/
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static void __init setup_init_fpu_buf(void)
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{
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static int on_boot_cpu __initdata = 1;
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BUILD_BUG_ON((XFEATURE_MASK_USER_SUPPORTED |
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XFEATURE_MASK_SUPERVISOR_SUPPORTED) !=
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XFEATURES_INIT_FPSTATE_HANDLED);
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WARN_ON_FPU(!on_boot_cpu);
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on_boot_cpu = 0;
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if (!boot_cpu_has(X86_FEATURE_XSAVE))
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return;
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@ -721,14 +716,10 @@ static void fpu__init_disable_system_xstate(void)
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void __init fpu__init_system_xstate(void)
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{
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unsigned int eax, ebx, ecx, edx;
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static int on_boot_cpu __initdata = 1;
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u64 xfeatures;
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int err;
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int i;
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WARN_ON_FPU(!on_boot_cpu);
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on_boot_cpu = 0;
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if (!boot_cpu_has(X86_FEATURE_FPU)) {
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pr_info("x86/fpu: No FPU detected\n");
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return;
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