On Tue, Jan 14, 2025, at 10:55, Qunqin Zhao wrote: > Loongson Secure Device Function device supports the functions specified > in "GB/T 36322-2018". This driver is only responsible for sending user > data to SDF devices or returning SDF device data to users. I haven't been able to find a public version of the standard, but from the table of contents it sounds like this is a standard for cryptographic functions that would otherwise be implemented by a driver in drivers/crypto/ so it can use the normal abstractions for both userspace and in-kernel users. Is there some reason this doesn't work? Arnd