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Hi, On Sunday, 22 October 2006 08:29, Sandeep Kumar wrote: > Hi all, > I have read in UTLK by bovet that the linux kernel does not uses the > PSE bit on an x86 > machine. Then how come we have the hugetlbfs, which provides support > for 4MB pages ? AFAIK, PSE is only used when PAE is not set and then it enables the 4 MB pages. If PAE is set, the 4 MB pages are impossible because there are only 512 entries per page table, but 2 MB pages can be used instead (and you don't need to set PSE to use them). Greetings, Rafael -- You never change things by fighting the existing reality. R. Buckminster Fuller - 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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