On Thu, Aug 18, 2016 at 02:10:30PM +0100, Suzuki K Poulose wrote: > On systems with mismatched i/d cache min line sizes, we need to use > the smallest size possible across all CPUs. This will be done by fetching > the system wide safe value from CPU feature infrastructure. > However the some special users(e.g kexec, hibernate) would need the line > size on the CPU (rather than the system wide), when the system wide > feature may not be accessible. Provide another helper which will fetch > cache line size on the current CPU.
Why are these users "special"? Using a smaller line size shouldn't affect correctness, and I don't see kexec and hibernate as being performance critical in their cache maintenance. Will