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Re: [Qemu-devel] [PATCH v4 00/10] cpu: add device_add foo-x86_64-cpu sup

From: Bharata B Rao
Subject: Re: [Qemu-devel] [PATCH v4 00/10] cpu: add device_add foo-x86_64-cpu support
Date: Thu, 26 Feb 2015 10:12:55 +0530
User-agent: Mutt/1.5.23 (2014-03-12)

On Tue, Feb 24, 2015 at 05:56:45PM +0100, Andreas Färber wrote:
> Hi Gu,
> Am 24.02.2015 um 02:25 schrieb Gu Zheng:
> > The issues you commented in the previous version have been fixed in this 
> > one.
> What I have repeatedly rejected is "device_add foo-x86_64-cpu". This is
> still in 00/10 and 09/10. Most of the actual changes however do look to
> be going in the right direction of making 'realize' work as expected for
> foo-x86_64-cpu.
> As for the socket-based device_add I mentioned, I had pushed a work
> branch qom-cpu-x86 and had some off-list discussions for some of the
> other architectures but did not submit it as an RFC yet. What I am still
> working on is dynamic properties to allocate cores (threads TBD) for
> "device_add x86_64-cpu-socket,cores=n".

If you have started a VM with -smp sockets=1,cores=4,threads=2, will you
allow addition of a socket with just 2 cores like

device_add x86_64-cpu-socket,cores=2,id=sock2 ?

If so, will there be semantics to populate the remaining cores of that
socket ? If so, would that look like below ?

device-add x86_64-cpu-core,sock=sock2


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