From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 4 Sep 2000 09:51:57 +0200 From: Ralf Baechle Subject: Re: Memory partitioning Message-ID: <20000904095157.A1186@bacchus.dhis.org> References: <4.3.2.7.0.20000822155755.00aa3e00@192.168.1.9> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <4.3.2.7.0.20000822155755.00aa3e00@192.168.1.9>; from santosh@sony.co.in on Tue, Aug 22, 2000 at 04:02:51PM +0530 Sender: owner-linux-mm@kvack.org Return-Path: To: Santosh Eraniose Cc: Linux-MM@kvack.org List-ID: On Tue, Aug 22, 2000 at 04:02:51PM +0530, Santosh Eraniose wrote: > Is it possible to partition the MMU such that multiple OS > can run on the same platform. > In all examples I see like MKLinux , the mem mgmt of Linux is mapped to the > underlying Mach kernel. > The other extreme is as in RTAI (Real time App Interface), where the MMU is > handled by linux, but the > scheduling is done by RTAI. Several approaches: - IBM S390 can partition the hardware. In cooperation with IBM's VM this allows to completly - and efficiently - subdivide the machine into multiple virtual machines. VMs can even nest. - Less perfect due to not available VM-like software and no support of the hardware as on the S390 for example Sun's E10000 or SGI Origin 2000/3000 offer partitioning. This style of partitioning is mostly implemented by the hardware of the machines. The two approaches guarantee that even a virtual machine or partition that goes nuts can't crash another virtual machine or partition. - Not implemented but in theory implementable would be multiple kernels running on top RTLinux's realtime kernel. Ralf -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/