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Re: [Xen-devel] Mini-OS and Xen!

On Tue, 2008-08-05 at 14:01 +0800, Jayaraman, Bhaskar wrote:
> Hi I have a doubt regarding Mini-OS and Xen. If it is true that Xen
> reserves in the virtual address space the top 64MB on 32bit systems
> and 168MB in PAE systems, doesnât it exist with a Mini-OS kernel which
> has only 32MB in size i.e. going by its default config file? Obviously
> Iâm missing something.

Virtual address space size is always a full 32bit or 64bit,
respectively. That's not yet memory, but mere address space.

Parts of which are mapped to a hypervisor and a guest system,
respectively. Now it's memory.

Therein, guest system size does not include hypervisor size.


Daniel Stodden
LRR     -      Lehrstuhl fÃr Rechnertechnik und Rechnerorganisation
Institut fÃr Informatik der TU MÃnchen             D-85748 Garching
http://www.lrr.in.tum.de/~stodden         mailto:stodden@xxxxxxxxxx
PGP Fingerprint: F5A4 1575 4C56 E26A 0B33  3D80 457E 82AE B0D8 735B

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