cr4_mask 20 arch/x86/kernel/fpu/init.c unsigned long cr4_mask = 0; cr4_mask 23 arch/x86/kernel/fpu/init.c cr4_mask |= X86_CR4_OSFXSR; cr4_mask 25 arch/x86/kernel/fpu/init.c cr4_mask |= X86_CR4_OSXMMEXCPT; cr4_mask 26 arch/x86/kernel/fpu/init.c if (cr4_mask) cr4_mask 27 arch/x86/kernel/fpu/init.c cr4_set_bits(cr4_mask);