Messages in this thread | | | Date | Mon, 23 Feb 2009 22:32:41 -0800 | From | "H. Peter Anvin" <> | Subject | Re: virtually and physically (page) aligned allocation |
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Parav Pandit wrote: > Hi, > > Can user space application allocate memory which is virtually and physically aligned to the system's page boundary in the Linux 2.6.x? > Such as using posix_memalign(). > > In other way, > If user space application allocates memory which is aligned to page boundary for say 4 pages using posix_memalign(), will is ensure that it corresponds to exactly 4 physical pages in kernel which can be pinned down? >
You can use hugetlbfs to allocate a 2 MB page, otherwise no.
-hpa
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