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Dave Jones <davej@redhat.com> writes: > > Looks like the Ubuntu people already did this... > > http://www.kernel.org/git/?p=linux/kernel/git/bcollins/ubuntu-2.6.git;a=commitdiff;h=048985336e32efe665cddd348e92e4a4a5351415;hp=1cb630c2b5aaad7cedaa78aa135e6cecf5ab91ac It's probably not needed. At least AMD K7/K8 has a SYSCFG MSR bit to do this (or rather they disable bus cycles for locks that makes them very cheap) Intel has one too in a different MSR that looks similar. With some luck they're even already set by the BIOS on UP systems. I know they are on some AMD systems. But overall the feature doesn't help longer term because single threaded CPUs are on their way out. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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