Messages in this thread | | | Date | Sat, 20 Jan 2007 15:44:16 +0530 | From | "Sunil Naidu" <> | Subject | More about dmesg stuff, this time 2.6.20-rc5 |
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Hello,
I did find this dmesg for the kernel 2.6.20-rc5
Linux version 2.6.20-rc5-Typhoon (root@Typhoon) (gcc version 4.1.1 20061011 (Red Hat 4.1.1-30)) #1 SMP Sat Jan 20 15:00:20 IST 2007 BIOS-provided physical RAM map: sanitize start sanitize end copy_e820_map() start: 0000000000000000 size: 000000000009fc00 end: 000000000009fc00 type: 1 copy_e820_map() type is E820_RAM copy_e820_map() start: 000000000009fc00 size: 0000000000000400 end: 00000000000a0000 type: 2 copy_e820_map() start: 00000000000e6000 size: 000000000001a000 end: 0000000000100000 type: 2 copy_e820_map() start: 0000000000100000 size: 000000001f62f800 end: 000000001f72f800 type: 1 copy_e820_map() type is E820_RAM copy_e820_map() start: 000000001f72f800 size: 0000000000000800 end: 000000001f730000 type: 4 copy_e820_map() start: 000000001f730000 size: 0000000000010000 end: 000000001f740000 type: 3 copy_e820_map() start: 000000001f740000 size: 00000000000b0000 end: 000000001f7f0000 type: 4 copy_e820_map() start: 000000001f7f0000 size: 0000000000010000 end: 000000001f800000 type: 2 copy_e820_map() start: 00000000e0000000 size: 0000000010000000 end: 00000000f0000000 type: 2 copy_e820_map() start: 00000000fed13000 size: 0000000000007000 end: 00000000fed1a000 type: 2 copy_e820_map() start: 00000000fed1c000 size: 0000000000084000 end: 00000000feda0000 type: 2
What are these sanitize start, sanitize end, copy_e820_map() about? Memory check?
After this, dmesg is almost same as in 2.6.19.2. But here is another observation::
migration_cost=18 for 2.6.19.2 migration_cost=87 for 2.6.20-rc5
How does this parameter value impacts the kernel?
Lastly, this about Intel RNG:
For 2.6.19.2
intel_rng: FWH not detected
For 2.6.20-rc5
intel_rng: Firmware space is locked read-only. If you can't or intel_rng: don't want to disable this in firmware setup, and if intel_rng: you are certain that your system has a functional intel_rng: RNG, try using the 'no_fwh_detect' option.
Is this a bug? Or, something wrong with my H/W?
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