Hello! > This fix follows the same approach that glibc uses to disable TSX on > processors on which it is broken. TSX can also be disabled through a > microcode update on these processors, but glibc consensus is that it > cannot be detected reliably whether the microcode update has been > applied. Thus, we just look for affected models/steppings. > > Tested on x86_64-linux (but I don't have a machine with broken TSX > available). > > libitm/ChangeLog > > * config/x86/target.h (htm_available): Add check for some processors > on which TSX is broken.
+ __cpuid (0, a, b, c, d); + if (b == 0x756e6547 && c == 0x6c65746e && d == 0x49656e69) You can use: #define signature_INTEL_ebx 0x756e6547 #define signature_INTEL_ecx 0x6c65746e #define signature_INTEL_edx 0x49656e69 defines from cpuid.h here. Uros.
