On Fri, Jan 19, 2018 at 07:04:42PM +0800, Liuyixian (Eason) wrote: > For case 1, the new kernel driver can't support old user application or old userspace driver. > Because we use the record db solution (what this patchset does and why add new db_addr in kernel) > to substitute with operating register, which used by the old userspace driver. > Therefore, users need to update the userspace driver to the version which support record db. This is not acceptable for the kernel. You must maintain compatability with old userspace. Also, new userspace must work with older kernels. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
