The first six patches of this series are fixes and cleanups of the unaligned access speed probing code. The next patch introduces a kernel command line option that allows the probing to be skipped. This command line option is a different approach than Jesse's [1]. [1] takes a cpu-list for a particular speed, supporting heterogeneous platforms. With this approach, the kernel command line should only be used for homogeneous platforms. [1] also only allowed 'fast' and 'slow' to be selected. This parameter also supports 'unsupported', which could be useful for testing code paths gated on that. The final patch adds the documentation. (I'd be happy to split the fixes from the new skip support if we want to discuss the skip support independently, but I want to base on the fixes and I'm not sure if patchwork supports Based-on: $MESSAGE_ID/$LORE_URL or not at the moment, so I'm just posting together for now in order to be able to check for my patchwork green lights!) [1] https://lore.kernel.org/linux-riscv/20240805173816.3722002-1-jesse@xxxxxxxxxxxx/ Thanks, drew --- v3: - Fix compile when RISCV_PROBE_UNALIGNED_ACCESS is not selected v2: - Change to command line option from table Andrew Jones (8): riscv: Annotate unaligned access init functions riscv: Fix riscv_online_cpu_vec riscv: Fix check_unaligned_access_all_cpus riscv: Change check_unaligned_access_speed_all_cpus to void riscv: Fix set up of cpu hotplug callbacks riscv: Fix set up of vector cpu hotplug callback riscv: Add parameter for skipping access speed tests Documentation/kernel-parameters: Add riscv unaligned speed parameters .../admin-guide/kernel-parameters.txt | 16 ++ arch/riscv/include/asm/cpufeature.h | 4 +- arch/riscv/kernel/traps_misaligned.c | 14 +- arch/riscv/kernel/unaligned_access_speed.c | 237 +++++++++++------- 4 files changed, 168 insertions(+), 103 deletions(-) -- 2.48.1
