https://sourceware.org/bugzilla/show_bug.cgi?id=27925
--- Comment #5 from Jim Wilson <wilson at gcc dot gnu.org> --- I hadn't thought about the kernel. It is compiled LP64 and with the FP extensions disabled, to avoid accidentally using FP registers. It does save/restore FP registers in the context switching code, but otherwise doesn't use FP registers, so that we don't have to save/restore FP registers in system calls. If there are no FP types in the kernel then LP64D will behave identically to LP64. But if you have a testsuite that checks all features, then we would have to implement LP64 correctly, and your patch is a step in the right direction. -- You are receiving this mail because: You are on the CC list for the bug.