PERF_REG_X86_XMM2 37 arch/x86/include/uapi/asm/perf_regs.h PERF_REG_X86_XMM2 = 36, PERF_REG_X86_XMM2 37 tools/arch/x86/include/uapi/asm/perf_regs.h PERF_REG_X86_XMM2 = 36,