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Re: [Qemu-devel] [PATCH 0/5] Add "info capabilities" monitor command


From: Mark McLoughlin
Subject: Re: [Qemu-devel] [PATCH 0/5] Add "info capabilities" monitor command
Date: Fri, 14 Nov 2008 16:09:07 +0000

On Fri, 2008-11-14 at 02:50 +0000, Jamie Lokier wrote:
> > (qemu) info capabilities
> > [qemu]
> > accel=
> > arch=sparc
> 
> I'm thinking that a qemu which supports multiple target architectures
> becomes increasingly feasible and likely, especially for system
> emulation.  Therefore, [qemu] should have an "archs" property, and
> there should be separate "[arch-sparc]" headers, like this:
> 
> [qemu]
> archs=sparc
> 
> [arch]
> name=sparc

Yep, that sounds sensible.

> > [machine]
> > name=SS-5
> > max_cpus=1
> > nic_models=
> 
> This would be prettier as [machine:SS5] or [machine SS5] imho.

I'd considered that but thought it would be ugly - now that you actually
type it out though, [machine foo] looks fine :-)

> > [machine]
> > name=Voyager
> > max_cpus=0
> > nic_models=
> 
> Crumbs, zero CPUs?

Ah, vl.c has:

  machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */

I guess it should do that for all machines, not just the selected one.

> > drive_cache=off,none,writethrough,writeback
> 
> Do we need "off" and "none" here?

"none" - yes, I think so.

"off" - probably not, it's deprecated I guess.

Cheers,
Mark.





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