On 11/9/2021 12:58 PM, hch@xxxxxx wrote: > On Tue, Nov 09, 2021 at 10:51:27AM +0000, Wang, Zhi A wrote: >> Can you elaborate more about this? We need the hash query from the table >> ASAP when the hypervisor trapped a mmio access. It's a critical path and >> we tried different data structure in the kernel and the hash table gives >> the best performance. > Ok, I misunderstood the hashtable.h interface. hash_for_each_possible > actually does a hash lookup instead of an interation despite the rather > misleading name. Yes. Maybe with a keyword "lookup" in the name of the interface would be better since it's widely used in the kernel. :)