On Sat, Oct 25, 2003 at 10:10:10PM +0200, Pavel Machek wrote: > > This patch was accepted into 2.5.55, attributed to "davej@uk". > Dave Jones?n Yep. > > This code will prefetch from beyond the end of the page table > > being cleared ... which is clearly a bad thing if the page table > > in question is allocated from the last page of memory (or precedes > > a hole on a discontig mem system). > Prefetching random addresses should be safe... It isn't on some CPUs. Early athlons go bang when you prefetch past the end of RAM into unmapped memory for eg. Dave -- Dave Jones http://www.codemonkey.org.uk - 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 Sun Oct 26 09:52:33 2003
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