Re: physmem, simple containers

[Stefan Götz]

> This entails that physmem needs to map in all physical memory
> into its virtual address space.  It's just most convenient to do this 1:1
> for two reasons.

There are at least two scenarios where this is not possible. First, it
won't be too long before people stick more than 3 GB of RAM into their
32-bit machines. Second, PCI devices can map their control registers
into 'physical' memory space at addresses above 3 GB (e.g. my network
adapter). It's not a problem to request this memory from sigma0 but you
obviously can't map it 1:1 (but maybe you do not intend to manage this
memory with physmem anyway).

Stefan