PERF_REG_X86_XMM0 35 arch/x86/include/uapi/asm/perf_regs.h PERF_REG_X86_XMM0 = 32, PERF_REG_X86_XMM0 35 tools/arch/x86/include/uapi/asm/perf_regs.h PERF_REG_X86_XMM0 = 32, PERF_REG_X86_XMM0 1624 tools/perf/util/intel-pt.c #define PERF_REG_X86_XMM0 32