From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [RFC 12/17] irq: bypass: Extend skeleton for ARM forwarding control Date: Thu, 2 Jul 2015 15:40:47 +0200 Message-ID: <55953F5F.9090203@redhat.com> References: <1435843047-6327-1-git-send-email-eric.auger@linaro.org> <1435843047-6327-13-git-send-email-eric.auger@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 35B9A57731 for ; Thu, 2 Jul 2015 09:29:40 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id luCqplHJRJtL for ; Thu, 2 Jul 2015 09:29:39 -0400 (EDT) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 38565576DC for ; Thu, 2 Jul 2015 09:29:38 -0400 (EDT) In-Reply-To: <1435843047-6327-13-git-send-email-eric.auger@linaro.org> 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 To: Eric Auger , eric.auger@st.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, christoffer.dall@linaro.org, marc.zyngier@arm.com, alex.williamson@redhat.com, avi.kivity@gmail.com, mtosatti@redhat.com, feng.wu@intel.com, joro@8bytes.org, b.reynal@virtualopensystems.com Cc: linux-kernel@vger.kernel.org, patches@linaro.org List-Id: kvmarm@lists.cs.columbia.edu On 02/07/2015 15:17, Eric Auger wrote: > - new fields are added on producer side: linux irq, vfio_device handle, > active which reflects whether the source is active (at interrupt > controller level or at VFIO level - automasked -) and finally an > opaque pointer which will be used to point to the vfio_platform_device > in this series. Linux IRQ and active should be okay. As to the vfio_device handle, you should link it from the vfio_platform_device instead. And for the vfio_platform_device, you can link it from the vfio_platform_irq instead. Once you've done this, embed the irq_bypass_producer struct in the vfio_platform_irq struct; in the new kvm_arch_* functions, go back to the vfio_platform_irq struct via container_of. From there you can retrieve pointers to the vfio_platform_device and the vfio_device. > - new fields on consumer side: the kvm handle, the gsi You do not need to add these. Instead, add the kvm handle to irqfd only. Like above, embed the irq_bypass_consumer struct in the irqfd struct; in the new kvm_arch_* functions, go back to the vfio_platform_irq struct via container_of. Paolo