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Re: Priority of -accel
From: |
Markus Armbruster |
Subject: |
Re: Priority of -accel |
Date: |
Mon, 13 Jan 2020 17:17:46 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Paolo Bonzini <address@hidden> writes:
> On 07/01/20 14:55, Christophe de Dinechin wrote:
>> So what about ranking the accelerators, so that all combinaisons
>> -accel=kvm:tcg, -accel=tcg:kvm, -accel kvm -accel tcg, etc would
>
> (I assume you mean "-machine accel=kvm:tcg" and "-machine accel=tcg:kvm"
> for the first two. This is the "older" way which has now become sugar
> for "-accel kvm -accel tcg").
>
>> all pickup kvm if available, and tcg as a fallback? Implementation-wise,
>> it would simply mean ranking the accelerators and updating the accelerator
>> only if it’s available and better.
>
> This is an interesting idea. I like this better than "-accel best",
> because "-accel best" has the problem that you can't add suboptions to
> it (the suboptions for the various accelerators are disjoint).
>
> It would break backwards compatibility for "-machine accel=tcg:kvm",
> which so far meant "use TCG if compiled in, otherwise use KVM". This is
> not something I would have a problem with... except that "tcg:kvm" is
> the default if no -accel option is provided!
Perfect opportunity to change the default to something more useful.
- Re: Priority of -accel (was: [PATCH] tests/qemu-iotests: Update tests to recent desugarized -accel option), (continued)
- Re: Priority of -accel (was: [PATCH] tests/qemu-iotests: Update tests to recent desugarized -accel option), Christophe de Dinechin, 2020/01/07
- Re: Priority of -accel (was: [PATCH] tests/qemu-iotests: Update tests to recent desugarized -accel option), Paolo Bonzini, 2020/01/07
- Re: Priority of -accel (was: [PATCH] tests/qemu-iotests: Update tests to recent desugarized -accel option), Thomas Huth, 2020/01/07
- Re: Priority of -accel (was: [PATCH] tests/qemu-iotests: Update tests to recent desugarized -accel option), Christophe de Dinechin, 2020/01/07
- Re: Priority of -accel (was: [PATCH] tests/qemu-iotests: Update tests to recent desugarized -accel option), Peter Maydell, 2020/01/07
- Re: Priority of -accel (was: [PATCH] tests/qemu-iotests: Update tests to recent desugarized -accel option), Kevin Wolf, 2020/01/08
- Re: Priority of -accel,
Markus Armbruster <=
- Re: Priority of -accel, Paolo Bonzini, 2020/01/13
- Re: Priority of -accel, Markus Armbruster, 2020/01/14
- Re: Priority of -accel, Paolo Bonzini, 2020/01/14
- Re: Priority of -accel, Christophe de Dinechin, 2020/01/14
- Re: Priority of -accel, Daniel P . Berrangé, 2020/01/14