This series has some fixups found when I was doing a deep dive documentation of the OpenRISC FPU support which was added in 2023.
http://stffrdhrn.github.io/hardware/embedded/openrisc/2023/08/24/or1k-fpu-linux-and-compilers.html The FPU handling has issues of being inefficient and also not providing the proper state if signals are received when handling syscalls. The series is small, so should be easy to see from the commit list but in summary does: - Fixup some issues with exception handling. - Adds CONFIG_FPU to allow disabling FPU support - Fixups to e FPU handling logic moving the FPCSR state out of the kernel stack pt_regs and into the task_struct. Stafford Horne (5): openrisc: traps: Convert printks to pr_<level> macros openrisc: traps: Remove calls to show_registers before die openrisc: traps: Don't send signals to kernel mode threads openrisc: Add FPU config openrisc: Move FPU state out of pt_regs arch/openrisc/Kconfig | 9 ++ arch/openrisc/include/asm/fpu.h | 22 ++++ arch/openrisc/include/asm/processor.h | 1 + arch/openrisc/include/asm/ptrace.h | 3 +- arch/openrisc/kernel/entry.S | 15 +-- arch/openrisc/kernel/process.c | 5 + arch/openrisc/kernel/ptrace.c | 18 ++-- arch/openrisc/kernel/signal.c | 36 ++++++- arch/openrisc/kernel/traps.c | 144 ++++++++++++++------------ 9 files changed, 160 insertions(+), 93 deletions(-) create mode 100644 arch/openrisc/include/asm/fpu.h -- 2.44.0
