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Re: [Qemu-devel] How do we do user input bitmap properties?

From: Andrew Jones
Subject: Re: [Qemu-devel] How do we do user input bitmap properties?
Date: Wed, 15 May 2019 10:18:54 +0200
User-agent: NeoMutt/20180716

On Tue, May 14, 2019 at 04:48:38PM +0200, Igor Mammedov wrote:
> On Tue, 14 May 2019 11:02:25 +0200
> Andrew Jones <address@hidden> wrote:
> > My thought is primarily machines. If a human wants to use the command
> > line and SVE, then I'm assuming they'll be happy with sve-max-vq or
> > figuring out a map they like once and then sticking to it.
> maybe naive question, but why not use a property/bit as user facing interface,
> in line with what we do with CPUID bits. (that's assuming that bits have
> fixed meaning).
> Yes, it's verbose but follows current practice and works fine with -cpu and
> -device.
> (I really hate custom preprocessing of -cpu and we were working hard to remove
> that in favor of canonical properties at the expense of more verbose CLI).

Are you asking if we should do something like the following?

  -cpu host,sve1=on,sve=2=on,sve3=off,sve4=on

(Where the numbers represent the number of vector quadwords supported.)

Naturally that would work, but it would be super verbose and require
adding tons of properties. Or maybe you meant something else. If so,
please provide an example.


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