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Re: [Qemu-devel] [PATCH v3] hw/core/null-machine: Add the possibility to

From: Eduardo Habkost
Subject: Re: [Qemu-devel] [PATCH v3] hw/core/null-machine: Add the possibility to instantiate a CPU and RAM
Date: Wed, 18 Jan 2017 15:04:21 -0200
User-agent: Mutt/1.7.1 (2016-10-04)

On Wed, Jan 18, 2017 at 01:44:50PM +0100, Thomas Huth wrote:
> Sometimes it is useful to have just a machine with CPU and RAM, without
> any further hardware in it, e.g. if you just want to do some instruction
> debugging for TCG with a remote GDB attached to QEMU, or run some embedded
> code with the "-semihosting" QEMU parameter. qemu-system-m68k already
> features a "dummy" machine, and xtensa a "sim" machine for exactly this
> purpose.
> All target architectures have nowadays also a "none" machine, which would
> be a perfect match for this, too - but it currently does not allow to add
> CPU and RAM yet. Thus let's add these possibilities in a generic way to the
> "none" machine, too, so that we hopefully do not need additional "dummy"
> machines in the future anymore (and maybe can also get rid of the already
> existing "dummy"/"sim" machines one day).
> Note that the default behaviour of the "none" machine is not changed, i.e.
> no CPU and no RAM is instantiated by default. You have explicitely got to
> specify the CPU model with "-cpu" and the amount of RAM with "-m" to get
> these new features.
> Signed-off-by: Thomas Huth <address@hidden>

Reviewed-by: Eduardo Habkost <address@hidden>

I will wait for the opinion of others before applying it, though.


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