Re: 3.10-rc4: mtrr_cleanup: can not find optimal value, pleasespecify mtrr_gran_size/mtrr_chunk_size

From: Sergey Meirovich
Date: Mon Jun 10 2013 - 06:01:46 EST

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Hi,

On 5 June 2013 02:08, Matt <jackdachef@xxxxxxxxx> wrote:
> Hi everyone,
>
>
> I noticed today the following error messages in /var/log/kern.log :
>
>
> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR default type: uncachable
> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 00000-9FFFF write-back
> Jun 5 00:26:48 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
> Jun 5 00:26:48 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
> Jun 5 00:26:48 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
> Jun 5 00:26:48 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
> Jun 5 00:26:48 localhost kernel: [ 0.000000] E4000-E7FFF write-through
> Jun 5 00:26:48 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
> Jun 5 00:26:48 localhost kernel: [ 0.000000] EC000-EFFFF write-through
> Jun 5 00:26:48 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 0 base 000000000
> mask E00000000 write-back
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 1 base 200000000
> mask FC0000000 write-back
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 2 base 0C0000000
> mask FC0000000 uncachable
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 3 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 4 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 5 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 6 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 7 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
> 0, old 0x7040600070406, new 0x7010600070106
> Jun 5 00:26:48 localhost kernel: [ 0.000000] original variable MTRRs
> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 0, base: 0GB,
> range: 8GB, type WB
> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 1, base: 8GB,
> range: 1GB, type WB
> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 2, base: 3GB,
> range: 1GB, type UC
> Jun 5 00:26:48 localhost kernel: [ 0.000000] total RAM covered: 8192M
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 64K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] gran_size: 2G
> chunk_size: 2G num_reg: 2 lose cover RAM: 2G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] mtrr_cleanup: can not
> find optimal value
> Jun 5 00:26:48 localhost kernel: [ 0.000000] please specify
> mtrr_gran_size/mtrr_chunk_size
>
>
>
> when trying to append some commands, e.g.:
>
> enable_mtrr_cleanup mtrr_spare_reg_nr=1 mtrr_gran_size=32M mtrr_chunk_size=128M
>
> or
>
> enable_mtrr_cleanup mtrr_spare_reg_nr=0
>
> it doesn't make any change
>
>
> this would yield the following result:
>
>
> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR default type: uncachable
> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 00000-9FFFF write-back
> Jun 5 00:20:47 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
> Jun 5 00:20:47 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
> Jun 5 00:20:47 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
> Jun 5 00:20:47 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
> Jun 5 00:20:47 localhost kernel: [ 0.000000] E4000-E7FFF write-through
> Jun 5 00:20:47 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
> Jun 5 00:20:47 localhost kernel: [ 0.000000] EC000-EFFFF write-through
> Jun 5 00:20:47 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 0 base 000000000
> mask E00000000 write-back
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 1 base 200000000
> mask FC0000000 write-back
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 2 base 0C0000000
> mask FC0000000 uncachable
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 3 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 4 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 5 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 6 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 7 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
> 0, old 0x7040600070406, new 0x7010600070106
> Jun 5 00:20:47 localhost kernel: [ 0.000000] original variable MTRRs
> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 0, base: 0GB,
> range: 8GB, type WB
> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 1, base: 8GB,
> range: 1GB, type WB
> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 2, base: 3GB,
> range: 1GB, type UC
> Jun 5 00:20:47 localhost kernel: [ 0.000000] total RAM covered: 8192M
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] invalid
> mtrr_gran_size or mtrr_chunk_size, will find optimal one
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 64K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] gran_size: 2G
> chunk_size: 2G num_reg: 2 lose cover RAM: 2G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] mtrr_cleanup: can not
> find optimal value
> Jun 5 00:20:47 localhost kernel: [ 0.000000] please specify
> mtrr_gran_size/mtrr_chunk_size
>
>
>
>
>
> Is this some kind of kernel BUG due to the negative value (- 0G) ?
>
> MTRR seems to be a topic that is not widely discussed or thoroughly
> understood when using google to find answers.
>
> cat /proc/mtrr
> reg00: base=0x000000000 ( 0MB), size= 8192MB, count=1: write-back
> reg01: base=0x200000000 ( 8192MB), size= 1024MB, count=1: write-back
> reg02: base=0x0c0000000 ( 3072MB), size= 1024MB, count=1: uncachable
>

I also seems to suffer from the same issue on 3.9.5:
in my situation it looks even weirder:
rathamahata@piledriver ~ $ cat /proc/mtrr
reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
reg01: base=0x080000000 ( 2048MB), size= 256MB, count=1: write-back
reg02: base=0x08f800000 ( 2296MB), size= 8MB, count=1: uncachable
reg03: base=0x0b0000000 ( 2816MB), size= 256MB, count=1: write-combining
reg04: base=0x0c0000000 ( 3072MB), size= 256MB, count=1: write-combining
rathamahata@piledriver ~ $ free -m
total used free shared buffers cached
Mem: 7370 745 6624 0 34 241
-/+ buffers/cache: 470 6900
Swap: 3659 0 3659
rathamahata@piledriver ~ $
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