Re: Intel P6 vs P7 system call performance

From: Ingo Molnar (mingo@elte.hu)
Date: Sun Dec 22 2002 - 05:23:08 EST


while reviewing the sysenter trampoline code i started wondering about the
HT case. Dont HT boxes share the MSRs between logical CPUs? This pretty
much breaks the concept of per-logical-CPU sysenter trampolines. It also
makes context-switch time sysenter MSR writing impossible, so i really
hope this is not the case.

        Ingo

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