On 2021/1/29 上午2:32, Elena Afanasova wrote:
+/* Wire protocol */
+struct ioregionfd_cmd {
+ __u32 info;
+ __u32 padding;
+ __u64 user_data;
+ __u64 offset;
+ __u64 data;
+};
So I'm still don't understand how the kernel and userspace is synchonrized when the fd is being used simultaneously by multiple devices/regions.
It might be helpful to document the protocol in api.rst. Thanks
