mtrr_cleanup: can not find optimal value and *BAD*gran_size

Solution Unverified - Updated -

Issue

  • mtrr_cleanup: can not find optimal value
  • Below errors in dmesg
*BAD*gran_size: 256M    chunk_size: 512M        num_reg: 7      lose cover RAM: -1M
*BAD*gran_size: 256M    chunk_size: 1G  num_reg: 7      lose cover RAM: -1M
*BAD*gran_size: 256M    chunk_size: 2G  num_reg: 7      lose cover RAM: -1M
 gran_size: 512M        chunk_size: 512M        num_reg: 7      lose cover RAM: 32767M
*BAD*gran_size: 512M    chunk_size: 1G  num_reg: 7      lose cover RAM: -1M
*BAD*gran_size: 512M    chunk_size: 2G  num_reg: 7      lose cover RAM: -1M
 gran_size: 1G  chunk_size: 1G  num_reg: 7      lose cover RAM: 32767M
*BAD*gran_size: 1G      chunk_size: 2G  num_reg: 7      lose cover RAM: -1M
 gran_size: 2G  chunk_size: 2G  num_reg: 7      lose cover RAM: 17407M
mtrr_cleanup: can not find optimal value

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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