Porting dom0 to RTOS

Porting dom0 to RTOS

[Andrew Hughes]

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I am interested in porting dom0 to an RTOS kernel. Could someone tell me if
this is even feasible?

Thanks,
Andrew

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Re: Porting dom0 to RTOS

[Tim Deegan]

At 19:00 +0000 on 11 Jan (1294772448), Andrew Hughes wrote:
> I am interested in porting dom0 to an RTOS kernel. Could someone tell
> me if this is even feasible?

Possible, maybe, but a significant project that would involve changing
Xen's scheduler and possibly other things.  There were some talks about
real-time+xen at the last summit, and one at the 2009 summit too; they
migth be a good starting point.

Tim.

-- 
Tim Deegan <Tim.Deegan@citrix.com>
Principal Software Engineer, Xen Platform Team
Citrix Systems UK Ltd.  (Company #02937203, SL9 0BG)

Re: Porting dom0 to RTOS

[Konrad Rzeszutek Wilk]

On Tue, Jan 11, 2011 at 11:00:48AM -0800, Andrew Hughes wrote:
> I am interested in porting dom0 to an RTOS kernel. Could someone tell me if

Sure. You just need to support PCI drivers, ACPI, IOAPIC, IRQ, MSI/MSI-X and
naturally the hypercalls. Then you also need to support booting the kernel
from protected mode and parsing the DIRECTMAP_P2M array for your MMU code.

Ah, and be able to work with events (which is an IRQ mechanism for PV
guests). 

Oh, and packages the RTOS kernel in an ELF format.

I think that covers it.