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From: Paolo Bonzini <pbonzini@redhat.com>
To: quintela@redhat.com
Cc: KVM devel mailing list <kvm@vger.kernel.org>,
	qemu-devel qemu-devel <qemu-devel@nongnu.org>
Subject: Re: KVM call minutes for 2013-08-06
Date: Tue, 06 Aug 2013 17:47:36 +0200	[thread overview]
Message-ID: <52011A98.6090104@redhat.com> (raw)
In-Reply-To: <878v0ehmun.fsf@elfo.elfo>

On 08/06/2013 05:15 PM, Juan Quintela wrote:
> * pvpanic
> - was added by default in 1.5, this might have been too rash:
> 	- might change guest behaviour if guest is set to reboot on panic

Interesting, but it looks like either a feature or a driver bug.

> 	- might cause slightly annoying warnings/queries from device
> 	  manager
> 	- generally somewhat inelegant/non-symmetrical, libvirt
> 	  developers prefer "no magic devices"
> - conclusions:
> 	- for -M 1.6, will change QEMU don't add by default, teach libvirt to add
> 	  with -device pvpanic

This just moves the problem to a layer where it's harder to fix it.  It 
will just appear to work because no one will use pvpanic, which is not a 
solution.

Paolo

WARNING: multiple messages have this Message-ID (diff)
From: Paolo Bonzini <pbonzini@redhat.com>
To: quintela@redhat.com
Cc: qemu-devel qemu-devel <qemu-devel@nongnu.org>,
	KVM devel mailing list <kvm@vger.kernel.org>
Subject: Re: [Qemu-devel] KVM call minutes for 2013-08-06
Date: Tue, 06 Aug 2013 17:47:36 +0200	[thread overview]
Message-ID: <52011A98.6090104@redhat.com> (raw)
In-Reply-To: <878v0ehmun.fsf@elfo.elfo>

On 08/06/2013 05:15 PM, Juan Quintela wrote:
> * pvpanic
> - was added by default in 1.5, this might have been too rash:
> 	- might change guest behaviour if guest is set to reboot on panic

Interesting, but it looks like either a feature or a driver bug.

> 	- might cause slightly annoying warnings/queries from device
> 	  manager
> 	- generally somewhat inelegant/non-symmetrical, libvirt
> 	  developers prefer "no magic devices"
> - conclusions:
> 	- for -M 1.6, will change QEMU don't add by default, teach libvirt to add
> 	  with -device pvpanic

This just moves the problem to a layer where it's harder to fix it.  It 
will just appear to work because no one will use pvpanic, which is not a 
solution.

Paolo

  reply	other threads:[~2013-08-06 15:47 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-06 15:15 KVM call minutes for 2013-08-06 Juan Quintela
2013-08-06 15:15 ` [Qemu-devel] " Juan Quintela
2013-08-06 15:47 ` Paolo Bonzini [this message]
2013-08-06 15:47   ` Paolo Bonzini
2013-08-06 17:01   ` Gleb Natapov
2013-08-06 17:01     ` [Qemu-devel] " Gleb Natapov

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