No docs I'm afraid :)

The thing with these examples is that the whole point of them is to describe a system that is set up with the particular hardware of the given platform.

We could come up with an example description for a vmware (as it supports both vt-x and vt-d) target, but this would likely be very unstable as there is no guarantee that two slightly different versions of an emulator won't put hardware resources at slightly different locations, rendering the configuration invalid.

In an ideal world we would have a tool that you run from Linux on your target machine (be it virtual or otherwise) and this scrapes the relevant hardware information and generates an appropriate default configuration. This is, unfortunately, something we simply have not had the resources to look into yet.

Adrian

On Thu 10-Mar-2016 12:31 PM, Julien Delange wrote:
Thanks all - it explains a lot now! Is there any paper or doc that explains how to test the VM example with an emulator or does these examples run only on the real hardware?

On Wed, Mar 9, 2016 at 5:09 PM, Adrian Danis <adrian.danis@nicta.com.au> wrote:
The x86 VMM requires both vt-x and vt-d support. vt-x support is easy enough with qemu+kvm, but I'm not sure what the vt-d support is like. I know vmware supports emulating both vt-x and vt-d.

That is the easy part though. Due to the the way CAmkES and capDL presently work all hardware resources (interrupts, memory mapped IO regions, PCI IOSpaces, etc) must all be described statically offline. For this reason I would not recommend starting with the c162 configuration, as it has many devices described all from a particular hardware board.

I would suggest starting with the optiplex9020_onevm configuration, as the only additional resources specified are for additional memory. See the 'vm0_config.ram = ...' line in apps/optiplex9020_onevm/optiplex9020.camkes. This describes a list of physical memory regions of the form (paddr, n) where the size of the region = 2^n bytes.

Adrian

On Thu 10-Mar-2016 7:26 AM, Corey Richardson wrote:
 
On Wed, Mar 09, 2016 at 03:10:58PM -0500, Julien Delange wrote:

Any idea about how to run this example with qemu and/or how to test it?


Assuming you're on Linux, to run hypervisors in qemu you'll need to enable
nested vmx. There's some basic instructions here:

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/virtual/kvm/nested-vmx.txt#n45

Additionally, you can nest deeper than the two levels described in that
document, but it will get *extremely* slow, so I would not recommend trying
it.

(There may be other nuances in testing that particular project, but I am not
personally aware of them.)




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