Messages in this thread |  | | | From | Mike Frysinger <> | | Date | Wed, 15 Jul 2009 07:12:20 -0400 | | Subject | Re: [Uclinux-dist-devel] [PATCH v2] NOMMU: add support for Memory Protection Units (MPU) |
| |
On Wed, Jul 15, 2009 at 06:37, David Howells wrote: > Bernd Schmidt <bernds_cb1@t-online.de> wrote: >> No page table, just three bitmaps (r/w/x), with one bit per page, per mm. > > I presume that all you do is maintain a distinction between > userspace-accessible areas and kernel-only areas, and don't prevent userspace > processes from destroying each other.
there is full 4k page protection between processes and between the kernel and processes. -mike
|  |