X86_CR4_FSGSBASE 122 arch/x86/include/uapi/asm/processor-flags.h #define X86_CR4_FSGSBASE _BITUL(X86_CR4_FSGSBASE_BIT) X86_CR4_FSGSBASE 30 tools/testing/selftests/kvm/include/x86_64/processor.h #define X86_CR4_FSGSBASE (1ul << 16)