Messages in this thread | | | Date | Tue, 17 Dec 2002 01:03:21 +0000 | From | Dave Jones <> | Subject | Re: Intel P6 vs P7 system call performance |
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On Mon, Dec 16, 2002 at 04:47:00PM -0800, Linus Torvalds wrote:
Cool, new toys 8-) I'll have a play with this tomorrow. after a quick glance, one thing jumped out at me.
> +static int __init sysenter_setup(void) > +{ > + if (!boot_cpu_has(X86_FEATURE_SEP)) > + return 0; > + > + enable_sep_cpu(NULL); > + smp_call_function(enable_sep_cpu, NULL, 1, 1); > + return 0;
I'm sure I recall seeing errata on at least 1 CPU re sysenter. If we do decide to go this route, we'll need to blacklist ones with any really icky problems.
Dave
-- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs - 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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