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Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatib
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility |
Date: |
Mon, 1 Oct 2012 16:07:58 +0200 |
On 01.10.2012, at 15:19, Anthony Liguori wrote:
> Jan Kiszka <address@hidden> writes:
>
>> On 2012-10-01 11:31, Marcelo Tosatti wrote:
>>
>> It's not just about default configs. We need to validate if the
>> migration formats are truly compatible (qemu-kvm -> QEMU, the other way
>> around definitely not). For the command line switches, we could provide
>> a wrapper script that translates them into upstream format or simply
>> ignores them. That should be harmless to carry upstream.
>
> qemu-kvm has:
>
> -no-kvm
Should be easy to have around as backwards compat hack. All it needs to do is
set accel=tcg.
> -no-kvm-irqchip
> -no-kvm-pit
> -no-kvm-pit-reinjection
Those are quite important, as we need cmdline backwards compatibility.
> -tdf <- does nothing
>
> There are replacements for all of the above. If we need to add them to
> qemu.git, it's not big deal to add them.
>
> -drive ...,boot= <- this is ignored
It's ignored, but useful for certain things. I don't know how many of our users
use boot= today, but it's certainly still in the code, and supported. I
honestly wouldn't mind to carry a SUSE specific patch that implements boot= for
now until we can deem it deprecated enough that we can drop it.
> cpu_set command for CPU hotplug which is known broken in qemu-kvm.
>
> testdev which is nice but only used for development
>
> Default nic is rtl8139 vs. e1000.
Couldn't we have a machine option that tells us that -M pc-1.2 is really -M
pc-kvm-1.2? That way we could implement the device difference, right?
Alex
>
> Some logic to move change the default VGA ram size to 16mb for pc-1.2
> (QEMU uses 16mb by default now too).
>
> I think at this point, none of this matters but I added the various
> distro maintainers to the thread.
>
> I think it's time for the distros to drop qemu-kvm and just ship
> qemu.git. Is there anything else that needs to happen to make that
> switch?
>
> Regards,
>
> Anthony Liguori
>
>>
>> But I would really stop worrying about the qemu-kvm code base.
>>
>> Jan
>>
>> --
>> Siemens AG, Corporate Technology, CT RTC ITP SDP-DE
>> Corporate Competence Center Embedded Linux
>> --
>> To unsubscribe from this list: send the line "unsubscribe kvm" in
>> the body of a message to address@hidden
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>
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, (continued)
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Alexander Graf, 2012/10/08
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Andreas Färber, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Daniel P. Berrange, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Anthony Liguori, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Paolo Bonzini, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Anthony Liguori, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Markus Armbruster, 2012/10/02
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Aurelien Jarno, 2012/10/02
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Michael Tokarev, 2012/10/03
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Jan Kiszka, 2012/10/03
Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility,
Alexander Graf <=
Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility, Bruce Rogers, 2012/10/01
Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility, Daniel P. Berrange, 2012/10/02