[PATCH v2 0/2] Forcibly enable some MISC_ENABLE features on Intel
ej64
Status: Interested
Joined: 13 Nov 2011
Posts: 18
Location: Germany
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These are patches discussed in August to overwrite "dumb" BIOS settings -> link .

I'm interested particularly in the fast string patch. My X220 (dmesg) tells me it has diabled fast sting operation. The patch affects the fast-string-enable bit (bit 0) of IA32_MISC_ENABLE MSR. Not shure if that matters on X86_64, though ...

Damentz, would you like to consider to include these patches?
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damentz
Status: Assistant
Joined: 09 Sep 2008
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Interesting, I'll add these when I prep for the next kernel release. There's nothing more satisfying than getting around a poor bios implementation.
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damentz
Status: Assistant
Joined: 09 Sep 2008
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The v4 patch set was merged to zen-kernel:

git.zen-kernel.org/zen-stable/commit/?h=misc-3.1&id=51bed69c529a488885b50edf7fb571b60b329403
git.zen-kernel.org/zen-stable/commit/?h=misc-3.1&id=9284b49242b1830d7fe33175cc73940a25624650
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ej64
Status: Interested
Joined: 13 Nov 2011
Posts: 18
Location: Germany
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Really great! Never thought that would happen this fast. Very looking forward to the next kernel. Thank you very much!
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ej64
Status: Interested
Joined: 13 Nov 2011
Posts: 18
Location: Germany
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I bow my head in gratitude. This was really a xmas gift :)

Fast strings are enabled and memory performance seems to be up now:
cached HD reading by some 16% (5200 -> 6000 MB/s). I didn't test any further (yet?) -- seems to work just fine ... :)
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