WARN_ON_FPU
WARN_ON_FPU(!irq_fpu_usable());
WARN_ON_FPU(!this_cpu_read(kernel_fpu_allowed));
WARN_ON_FPU(this_cpu_read(kernel_fpu_allowed));
WARN_ON_FPU(fpu != x86_task_fpu(current));
WARN_ON_FPU(fpu != x86_task_fpu(current));
WARN_ON_FPU(!fpregs_state_valid(fpu, smp_processor_id()));
WARN_ON_FPU(fpu == x86_task_fpu(current));
if (WARN_ON_FPU(!cpu_feature_enabled(X86_FEATURE_XSAVES)))
WARN_ON_FPU(err);
WARN_ON_FPU(!alternatives_patched);
WARN_ON_FPU(err);