linux-kernel - virtually and physically (page) aligned allocation

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Date:	Mon, 23 Feb 2009 20:55:17 -0800 (PST)
From:	Parav Pandit <paravpandit@...oo.com>
To:	Linux kernel <linux-kernel@...r.kernel.org>
Subject: virtually and physically (page) aligned allocation

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

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