From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: [PATCH 1/2] kvm tools: Add optional callbacks for VQs Date: Wed, 16 Nov 2011 14:24:35 +0200 Message-ID: <1321446276-23952-1-git-send-email-levinsasha928@gmail.com> Cc: kvm@vger.kernel.org, mingo@elte.hu, asias.hejun@gmail.com, gorcunov@gmail.com, Sasha Levin To: penberg@kernel.org Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:65344 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752376Ab1KPM1C (ORCPT ); Wed, 16 Nov 2011 07:27:02 -0500 Received: by wwe5 with SMTP id 5so625815wwe.1 for ; Wed, 16 Nov 2011 04:27:01 -0800 (PST) Sender: kvm-owner@vger.kernel.org List-ID: This patch adds optional callbacks which get called when the VQ gets assigned an eventfd for notifications, and when it gets assigned with a GSI. This allows the device to pass the eventfds to 3rd parties which can use them to notify and get notifications regarding the VQ. Signed-off-by: Sasha Levin --- tools/kvm/include/kvm/virtio-trans.h | 2 ++ tools/kvm/virtio/pci.c | 6 ++++++ 2 files changed, 8 insertions(+), 0 deletions(-) diff --git a/tools/kvm/include/kvm/virtio-trans.h b/tools/kvm/include/kvm/virtio-trans.h index d9f4b95..e7c186e 100644 --- a/tools/kvm/include/kvm/virtio-trans.h +++ b/tools/kvm/include/kvm/virtio-trans.h @@ -20,6 +20,8 @@ struct virtio_ops { int (*notify_vq)(struct kvm *kvm, void *dev, u32 vq); int (*get_pfn_vq)(struct kvm *kvm, void *dev, u32 vq); int (*get_size_vq)(struct kvm *kvm, void *dev, u32 vq); + void (*notify_vq_gsi)(struct kvm *kvm, void *dev, u32 vq, u32 gsi); + void (*notify_vq_eventfd)(struct kvm *kvm, void *dev, u32 vq, u32 efd); }; struct virtio_trans_ops { diff --git a/tools/kvm/virtio/pci.c b/tools/kvm/virtio/pci.c index 1660f06..0737ae7 100644 --- a/tools/kvm/virtio/pci.c +++ b/tools/kvm/virtio/pci.c @@ -51,6 +51,9 @@ static int virtio_pci__init_ioeventfd(struct kvm *kvm, struct virtio_trans *vtra ioeventfd__add_event(&ioevent); + if (vtrans->virtio_ops->notify_vq_eventfd) + vtrans->virtio_ops->notify_vq_eventfd(kvm, vpci->dev, vq, ioevent.fd); + return 0; } @@ -152,6 +155,9 @@ static bool virtio_pci__specific_io_out(struct kvm *kvm, struct virtio_trans *vt gsi = irq__add_msix_route(kvm, &vpci->msix_table[vec].msg); vpci->gsis[vpci->queue_selector] = gsi; + if (vtrans->virtio_ops->notify_vq_gsi) + vtrans->virtio_ops->notify_vq_gsi(kvm, vpci->dev, + vpci->queue_selector, gsi); break; } }; -- 1.7.8.rc1