On Tue, Jul 24, 2012 at 11:06:08AM +0400, Vladimir Davydov wrote: > If msr-tools are used for cpuid masking, we will either get > inconsistency between /proc/cpuinfo:flags and the output of the cpuid > instruction or have to "synchronize" the clearcpuid boot option and > the userspace app using msr-tools, which seems to be inconvenient.
Right, so IMO what you want to do is not very kosher as a generic kernel feature for reasons described earlier. And yes, "synchronizing" /proc/cpuinfo's flags and CPUID output is a lot less pain compared to having a generic abusable feature. And also much better suited for your niche use case than opening this up as a generic functionality to the wide public which will most definitely find productive ways to abuse this. Simply ask yourself this: is this something which the majority of x86 linux users will benefit from or is it only something which is nice-to-have solely for our single use case? Thanks. -- Regards/Gruss, Boris. Advanced Micro Devices GmbH Einsteinring 24, 85609 Dornach GM: Alberto Bozzo Reg: Dornach, Landkreis Muenchen HRB Nr. 43632 WEEE Registernr: 129 19551 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
