Messages in this thread | | | Date | Tue, 4 Jun 2002 05:18:40 +0200 | From | "J.A. Magallon" <> | Subject | Algorithm for CPU_X86 |
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Hi all...
Following with the cpu selection changes, setting the flags controlled by the various CPU_X86_xxxx can be a real mess.
But, I have ralized that those CPU_X86 flags can be logically split in two groups: features (TSC,MMX,3DNOW) and bugfixes (PPRO_FENCE) (or perhaps more, it is just a first thought...).
So the algorithm can be easy (i think..) - Enable all feature flags (say, MMX and 3DNOW) - Disable all bugfix flags (FENCE) - For each CPU if it does not have the feature, kill it (if VENDOR_INTEL set 3DNOW=n) if this-cpu-kernel could run on buggy-cpu, enable fix (if GENERIC_586 set FENCE=y)
Right ?
-- J.A. Magallon # Let the source be with you... mailto:jamagallon@able.es Mandrake Linux release 8.3 (Cooker) for i586 Linux werewolf 2.4.19-pre9-jam1 #1 SMP lun jun 3 19:59:12 CEST 2002 i686 - 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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