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Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not sho
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore |
Date: |
Tue, 26 Jun 2018 18:43:56 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) |
Eduardo Habkost <address@hidden> writes:
> On Tue, Jun 26, 2018 at 09:50:04AM +0200, Cornelia Huck wrote:
>> On Tue, 26 Jun 2018 06:40:56 +0200
>> Thomas Huth <address@hidden> wrote:
>>
>> > On 25.06.2018 20:26, Paolo Bonzini wrote:
>> > > On 25/06/2018 19:30, Eduardo Habkost wrote:
>> > >>>> Attentive distros could even replace the wrapper script by a link.
>> > >>> If they are okay with replacing the "KVM only" semantics with "KVM or
>> > >>> TCG", which I think is generally worse.
>> > >>
>> > >> If we can't get agreement on what's the right default for each
>> > >> QEMU binary, I think that's yet another reason to document that
>> > >> upstream QEMU won't guarantee ABI compatibility if -accel is
>> > >> omitted.
>> > >
>> > > Before that we should ask what the benefit is in changing the default
>> > > for qemu-system-*. Nobody is using it in practice to start QEMU with
>> > > KVM enabled...
>> >
>> > That's certainly not true. I've seen a couple of times already that
>> > people ask on IRC why their guests are running so slow, and if you ask
>> > them about their command line, it's obvious that they simply were not
>> > aware of "-accel" / "-enable-kvm" yet.
>> >
>> > <semi-sarcastic>
>> > Maybe we simply should add a "--verbose" command line option that people
>> > can use to diagnose their problems:
>> >
>> > $ qemu-system-x86_64 --verbose
>> > QEMU emulator version 2.12.50
>> > Using 'tcg' accelerator. Use '-accel kvm' to speed things up.
>> > Machine type is 'pc-i440fx-3.0'. Use 'q35' for a more modern machine.
>> > ....
>> > </semi-sarcastic>
>>
>> Not sure how serious you meant that, but I actually quite like the
>> idea :)
>
> Also, this mode could be enabled by default if stderr is a tty.
It could be enabled by default, period.
Our inability to change defaults that have become sub-optimal for most
users is depressing.
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, (continued)
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Paolo Bonzini, 2018/06/26
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Eduardo Habkost, 2018/06/26
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Paolo Bonzini, 2018/06/26
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Eduardo Habkost, 2018/06/26
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Daniel P . Berrangé, 2018/06/26
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Paolo Bonzini, 2018/06/27
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Eduardo Habkost, 2018/06/27
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Thomas Huth, 2018/06/26
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Cornelia Huck, 2018/06/26
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Eduardo Habkost, 2018/06/26
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore,
Markus Armbruster <=
- Re: [Qemu-trivial] [Qemu-devel] [RFC PATCH 4/4] qemu-options: Do not show -enable-kvm and -enable-hax in the docs anymore, Paolo Bonzini, 2018/06/27
Re: [Qemu-trivial] [PATCH 0/4] Clean up accelerator options, Stefan Hajnoczi, 2018/06/13