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Subject: Re: [PATCH 19/19] KVM: introduce a KVM_DELETE_DEVICE ioctl
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: =?ISO-8859-1?Q?C=E9dric?= Le Goater <clg@kaod.org>, Paul Mackerras
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Date: Thu, 24 Jan 2019 08:32:57 +1100
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Cc: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org,
 David Gibson <david@gibson.dropbear.id.au>
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On Wed, 2019-01-23 at 19:39 +0100, Cédric Le Goater wrote:
> > The reason I ask is that we will have to be much more careful about
> > memory allocation lifetimes with this patch. 
> 
> yes. bad refcounting will lead the host kernel to a crash. 

One way to alleviate that is to make sure this is only supported on
selected devices such as XICS via some flag or the presence of a
callback.

Cheers,
Ben.