linux-kernel - Re: [PATCH 0/2 v3] kvm: notify host when guest panicked

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Message-ID: <4F61D688.5040406@redhat.com>
Date:	Thu, 15 Mar 2012 13:46:16 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Jan Kiszka <jan.kiszka@...mens.com>
CC:	Gleb Natapov <gleb@...hat.com>,
	Eric Northup <digitaleric@...gle.com>,
	Wen Congyang <wency@...fujitsu.com>,
	"Daniel P. Berrange" <berrange@...hat.com>,
	kvm list <kvm@...r.kernel.org>,
	qemu-devel <qemu-devel@...gnu.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Amit Shah <amit.shah@...hat.com>
Subject: Re: [PATCH 0/2 v3] kvm: notify host when guest panicked

On 03/15/2012 01:25 PM, Jan Kiszka wrote:
> >>
> > There was such vm exit (KVM_EXIT_HYPERCALL), but it was deemed to be a
> > bad idea.
>
> BTW, this would help a lot in emulating hypercalls of other hypervisors
> (or of KVM's VAPIC in the absence of in-kernel irqchip - I had to jump
> through hoops therefore) in user space. Not all those hypercall handlers
> actually have to reside in the KVM module.
>

That is true.  On the other hand the hypercall ABI might go to pieces if
there was no central implementation.

-- 
error compiling committee.c: too many arguments to function

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