Description of problem: Backport upstream cxl-6.7 & 6.8 features to anolis branch devel-6.6, the goal is to enable the devel-6.6 branch to better support the new features of cxl subsystem.
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/5907
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/6067
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/6068