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Re: [PATCH 0/7] hw/kvm: Exit gracefully when KVM is not supported

From: Philippe Mathieu-Daudé
Subject: Re: [PATCH 0/7] hw/kvm: Exit gracefully when KVM is not supported
Date: Fri, 19 Feb 2021 13:15:25 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0

On 2/19/21 1:00 PM, Daniel P. Berrangé wrote:
> On Fri, Feb 19, 2021 at 12:44:21PM +0100, Philippe Mathieu-Daudé wrote:
>> Hi,
>> This series aims to improve user experience by providing
>> a better error message when the user tries to enable KVM
>> on machines not supporting it.
> Improved error message is good, but it is better if the mgmt apps knows
> not to try this in the first place.

I am not sure this is the same problem. This series addresses
users from the command line (without mgmt app).

> IOW, I think we want "query-machines" to filter out machines
> which are not available with the currently configured accelerator.
> libvirt will probe separately with both TCG and KVM enabled, so if
> query-machines can give the right answer in these cases, libvirt
> will probably "just work" and not offer to even start such a VM.

Yes, agreed. There are other discussions about 'query-machines'
and an eventual 'query-accels'. This series doesn't aim to fix
the mgmt app problems.

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