You need at least a 2.6.38 kernel.
And in case of CentOS it means Redhat needs to backport the driver to el6 2.6.32 kernel.
I admit that my secret dream is that RH already would have done that for RHEL 6.1 kernels, otherwise it will take rather long time. AFAIK, they backport things like that only for new minor versions, so if it's not in 6.1 in the beginning, it won't be there before 6.2?
Correct.
You could grab the el6.1 kernel src.rpm from ftp.redhat.com and read the changelog.. (if redhat still lists all the changes in the changelog, now when they don't ship separate patches anymore..)
Looks like it's included in RHEL 6.1: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.1_Releas...
-- TiN