On 2026-03-18 11:29, Masami Hiramatsu (Google) wrote:
- AFAIU, you are not trying to evince cache lines after creation of a new virtual mapping (which is the documented intent of flush_cache_vmap).Ah, OK. That's a good point! (anyway I will replace it with do { } while (0) in the next version.)- AFAIU flush_cache_vmap maps to no-code on arm64 (asm-generic), what amI missing ? It makes sense to be a no-op because AFAIR arm64 does not have to deal with virtually aliasing caches.Yeah, so my patch also introduces arm64 specific implementation.
Just make sure to call this something else than "flush_cache_vmap", because you don't want to slow down vmap on arm64 which does not require to evince and certainly not write back cache lines after creation of a new virtual mapping. Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. https://www.efficios.com
