GS 17 arch/x86/include/uapi/asm/ptrace-abi.h #define GS 10 GS 151 arch/x86/kernel/process_64.c GS GS 41 arch/x86/um/shared/sysdep/ptrace_64.h #define GS (HOST_GS * sizeof(long)) GS 19 tools/perf/arch/x86/tests/regs_load.S #define GS 15 * 8 GS 117 tools/testing/selftests/x86/fsgsbase.c enum which_base { FS, GS };