From: Dominik Csapak <d.csapak@proxmox.com>
To: Fiona Ebner <f.ebner@proxmox.com>,
Proxmox VE development discussion <pve-devel@lists.proxmox.com>
Subject: Re: [pve-devel] [PATCH qemu-server 2/8] config to command: add one '-global' option for each flag
Date: Fri, 7 Mar 2025 11:05:30 +0100 [thread overview]
Message-ID: <590e5331-b0c6-4998-bafe-6efbdb8c64a6@proxmox.com> (raw)
In-Reply-To: <fe820c37-c0fe-4035-b94b-9d35d30529d2@proxmox.com>
On 3/7/25 11:00, Fiona Ebner wrote:
> Am 07.03.25 um 10:54 schrieb Dominik Csapak:
>> On 3/6/25 13:55, Fiona Ebner wrote:
>>> Am 06.03.25 um 13:15 schrieb Dominik Csapak:
>>>> On 3/6/25 13:13, Fiona Ebner wrote:
>>>>> Am 06.03.25 um 11:44 schrieb Dominik Csapak:
>>>>>> If we have multiple 'globalFlags', we have to encode each one
>>>>>> separately
>>>>>> on the commandline with '-global OPTION', since QEMU does not allow to
>>>>>> have multiple options here.
>>>>>>
>>>>>> We currently only have one such flag that used the 'globalFlags' list,
>>>>>> so it never popped up. (All other uses directly add an option to the
>>>>>> commandline)
>>>>>>
>>>>>> Avoid future bugs by fixing it now.
>>>>>>
>>>>>
>>>>> So there is no real point to collecting the flags in the first place?
>>>>> I.e. we could also get rid of the variable and have the single current
>>>>> user of the variable add the flag directly on the commandline too. Or
>>>>> otherwise, we could change the other users and collect all flags with
>>>>> this variable. Pre-existing of course, but ideally, we could avoid the
>>>>> mishmash.
>>>>>
>>>>
>>>> Sorry this could have been more clear here:
>>>> I add to the flags in one of the following patches, so i sent this
>>>> in preparation of that (could possibly be squashed)
>>>
>>> Yes, I understand that. I still think the status quo with mixing two
>>> different approaches might not be best. It's not going to be a blocker
>>> for the series, but I wanted to mention it, if you want to go for
>>> avoiding it.
>>>
>>>> I did not want to touch the other places, since that in turn changes
>>>> the order of the qemu commandline (which sometimes has unintended side
>>>> effects, e.g. in combination with the 'args' parameter)
>>>
>>> Are you sure? Custom 'args' are always added last so that shouldn't
>>> matter.
>>>
>>> The only thing that would change by removing the global flags variable
>>> is having "-global kvm-pit.lost_tick_policy=discard" earlier in the
>>> commandline. I think that should be fine. In particular QEMU's
>>> qemu_init() function has a call to user_register_global_props() which
>>> handles all global properties at the same time, so I think changing the
>>> order should be fine in (almost?) all cases.
>>
>> I'll test that, but imho it would better to do the reverse here?
>> So don't interject '-gloabl' parameters throughout config2command, but
>> add them to the globalFlags and output them together at the end?
>>
>> we'd have to touch the same number of tests i think, but it seems less
>> confusing to me (also in the resulting commandline we'd have all
>> global options together then)
>>
>> Or is there a better argument for injecting the global parameters
>> in the middle?
>
> It avoids the need for the variable to collect and passing it around and
> to remember adding future ones to that variable too.
>
> It doesn't make a difference from QEMUs perspective, but would slightly
> improve readability for humans looking at the commandline.
>
> Note that I already suggested collecting all in the variable as an
> approach above. I just want to avoid the mishmash.
OK, which approach would you prefer? (I don't have a strong feeling in either direction
and doing the cleanup now seems to not be a lot of work)
_______________________________________________
pve-devel mailing list
pve-devel@lists.proxmox.com
https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
next prev parent reply other threads:[~2025-03-07 10:06 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-06 10:44 [pve-devel] [PATCH qemu-server 0/8] disable S3/S4 power states by default Dominik Csapak
2025-03-06 10:44 ` [pve-devel] [RFC PATCH qemu-server 1/8] tests: cfg2cmd: pin QEMU version Dominik Csapak
2025-03-06 12:00 ` Fiona Ebner
2025-03-06 12:07 ` Dominik Csapak
2025-03-06 12:43 ` Fiona Ebner
2025-03-06 10:44 ` [pve-devel] [PATCH qemu-server 2/8] config to command: add one '-global' option for each flag Dominik Csapak
2025-03-06 12:13 ` Fiona Ebner
2025-03-06 12:15 ` Dominik Csapak
2025-03-06 12:55 ` Fiona Ebner
2025-03-07 9:54 ` Dominik Csapak
2025-03-07 10:00 ` Fiona Ebner
2025-03-07 10:05 ` Dominik Csapak [this message]
2025-03-07 10:14 ` Fiona Ebner
2025-03-06 10:44 ` [pve-devel] [PATCH qemu-server 3/8] meta info: also add current pve-machine version Dominik Csapak
2025-03-06 10:44 ` [pve-devel] [PATCH qemu-server 4/8] machine: correctly select pve machine version for non pinned windows guests Dominik Csapak
2025-03-06 13:10 ` Fiona Ebner
2025-03-06 13:36 ` Dominik Csapak
2025-03-06 14:10 ` Fiona Ebner
2025-03-06 14:14 ` Fiona Ebner
2025-03-06 14:15 ` Dominik Csapak
2025-03-06 14:20 ` Fiona Ebner
2025-03-07 9:55 ` Dominik Csapak
2025-03-06 10:44 ` [pve-devel] [PATCH qemu-server 5/8] machine: incorporate pve machine version when pinning " Dominik Csapak
2025-03-06 14:32 ` Fiona Ebner
2025-03-07 9:58 ` Dominik Csapak
2025-03-07 10:06 ` Fiona Ebner
2025-03-06 10:44 ` [pve-devel] [PATCH qemu-server 6/8] machine: add S3/S4 power state properties Dominik Csapak
2025-03-06 14:52 ` Fiona Ebner
2025-03-07 10:02 ` Dominik Csapak
2025-03-07 10:10 ` Fiona Ebner
2025-03-06 10:44 ` [pve-devel] [PATCH qemu-server 7/8] machine: bump pve machine version and reverse the s3/s4 defaults Dominik Csapak
2025-03-06 15:04 ` Fiona Ebner
2025-03-06 10:44 ` [pve-devel] [PATCH qemu-server 8/8] tests: cfg2cmd: add test for windows machine pinning from meta info Dominik Csapak
2025-03-06 15:10 ` Fiona Ebner
2025-03-07 14:46 ` [pve-devel] [PATCH qemu-server 0/8] disable S3/S4 power states by default Dominik Csapak
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=590e5331-b0c6-4998-bafe-6efbdb8c64a6@proxmox.com \
--to=d.csapak@proxmox.com \
--cc=f.ebner@proxmox.com \
--cc=pve-devel@lists.proxmox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Service provided by Proxmox Server Solutions GmbH | Privacy | Legal