firmware: dmi-sysfs: why is the access mode of dmi sysfs entries restricted to 0400?

[Guoheyi]

Hi,

Why is the access mode of dmi sysfs entries restricted to 0400? Is it 
for security concern? If it is, which information do we consider as privacy?

We would like to fetch CPU information from non-root application, is 
there feasible way to do that?

Any advice is appreciated.

Thanks,

Heyi