Re: [PATCH RFC] x86: avoid atomic operation intest_and_set_bit_lock if possible

[Eric Dumazet]

Le vendredi 25 mars 2011 Ã 06:47 +0100, Eric Dumazet a Ãcrit :

> I tried many different changes in BIOS and all failed (the machine is
> damn slow at boot, this takes age).

I even tried on a more recent hardware (ProLiant BL460c G7)

BIOS :	Version: I27  Release Date: 09/30/2010

[    0.021849] CPU0: Intel(R) Xeon(R) CPU           E5640  @ 2.67GHz stepping 02
[    0.123904] Performance Events: PEBS fmt1+, Westmere events, Broken BIOS detected, using software events only.
[    0.124125] [Firmware Bug]: the BIOS has corrupted hw-PMU resources (MSR 38d is 330)

I guess I'll have to patch my kernel, I doubt HP will make any change in this area.


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