From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: [RFC v2 0/6] IRQ bypass manager and irqfd consumer Date: Thu, 9 Jul 2015 17:34:58 +0200 Message-ID: <20150709153458.GX18569@8bytes.org> References: <1436184692-20927-1-git-send-email-eric.auger@linaro.org> <1436289468.1391.89.camel@redhat.com> <20150709122805.GW18569@8bytes.org> <1436451223.1391.219.camel@redhat.com> <559E8771.9010401@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: eric.auger@st.com, kvm@vger.kernel.org, marc.zyngier@arm.com, mtosatti@redhat.com, linux-kernel@vger.kernel.org, Alex Williamson , patches@linaro.org, feng.wu@intel.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, avi.kivity@gmail.com To: Paolo Bonzini Return-path: Content-Disposition: inline In-Reply-To: <559E8771.9010401@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu List-Id: kvm.vger.kernel.org On Thu, Jul 09, 2015 at 04:38:41PM +0200, Paolo Bonzini wrote: > >> On Tue, Jul 07, 2015 at 11:17:48AM -0600, Alex Williamson wrote: > > If we think that it's *only* a kvm-vfio interaction then we could add it > > to virt/kvm/vfio.c. vfio could use symbol_get to avoid a module > > dependency and effectively disable the code path when not used with kvm. > > The reverse model of hosting it in vfio and using symbol_get from > > kvm-vfio would also work. Do we really want to declare it to be > > kvm-vfio specific though? Another option would be to simply host it > > under virt/lib with module dependencies for both vfio and kvm. > > I wonder if in the future we may have some kind of driver-mediated > passthrough, e.g. for network drivers. They might use the bypass > mechanism too. So I think drivers/vfio is too restrictive. > > virt/ right now only hosts KVM, but it could for example host lguest > too. virt/lib/ is okay with me. Yeah, virt/lib is probably the best choice. Joerg