virtually and physically (page) aligned allocation

Parav Pandit
2009-02-24T04:55:29Z

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?

Regards,
Parav Pandit