>>>>> On Mon, 26 Apr 2004 14:00:40 -0500, Mario Smarduch <cms063@email.mot.com> said: Mario> Is there support in IA64 kernel to change a memory mapping Mario> from cacheble to uncacheble attribute. By support I mean one Mario> function which can accept an addr start/range, make sure Mario> in-transit cache data/prefetch hits are synced and upon Mario> return gurantee no CPU has any stale data in its caches and Mario> after installing the new attribute memory is guranteed Mario> synchronized. Or is a combonition of functions/macros Mario> required? Volume 2 (System Architecture) of the ASDM outlines the steps needed to do such a transition. All the necessary primitives should be there in ia64 linux, but there is no single convenient-to-use function to do this. In any case, just be careful about not introducing memory attribute aliases. You need to be especially careful since the kernel accesses memory with granule-sized mappings (normally 64MB page size, but on some machines its 16MB). --david - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.htmlReceived on Mon Apr 26 15:25:37 2004
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