K 10 svn:author V 3 gnn K 8 svn:date V 27 2010-07-20T17:57:10.492475Z K 7 svn:log V 262 MFC r210012: Fix a panic brought about by writing an MSR without a proper mask. All of the necessary wrmsr calls are now preceded by a rdmsr and we leave the reserved bits alone. Document the bits in the relevant registers for future reference. Tested by: mdf END