From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: [PATCHv5 5/5] qemu/virtio: mark msi vectors used on load Date: Sun, 5 Jul 2009 16:02:34 +0300 Message-ID: <20090705130234.GF5417@redhat.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: qemu-devel@nongnu.org, avi@redhat.com, kvm@vger.kernel.org, aliguori@us.ibm.com, kwolf@redhat.com, glommer@redhat.com, blauwirbel@gmail.com Return-path: Received: from mx2.redhat.com ([66.187.237.31]:56123 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756242AbZGENDM (ORCPT ); Sun, 5 Jul 2009 09:03:12 -0400 Content-Disposition: inline In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: Usage of msi vectors is controlled by the guest and so needs to be restored on load. Do this for msi vectors used by the virtio device. Signed-off-by: Michael S. Tsirkin --- hw/virtio-pci.c | 22 +++++++++++++++++----- 1 files changed, 17 insertions(+), 5 deletions(-) diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index f7da503..19ba5b8 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -126,11 +126,18 @@ static int virtio_pci_load_config(void * opaque, QEMUFile *f) VirtIOPCIProxy *proxy = opaque; int ret; ret = pci_device_load(&proxy->pci_dev, f); - if (ret) + if (ret) { return ret; + } msix_load(&proxy->pci_dev, f); - if (msix_present(&proxy->pci_dev)) + if (msix_present(&proxy->pci_dev)) { qemu_get_be16s(f, &proxy->vdev->config_vector); + } else { + proxy->vdev->config_vector = VIRTIO_NO_VECTOR; + } + if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { + return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); + } return 0; } @@ -138,10 +145,15 @@ static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) { VirtIOPCIProxy *proxy = opaque; uint16_t vector; - if (!msix_present(&proxy->pci_dev)) - return 0; - qemu_get_be16s(f, &vector); + if (msix_present(&proxy->pci_dev)) { + qemu_get_be16s(f, &vector); + } else { + vector = VIRTIO_NO_VECTOR; + } virtio_queue_set_vector(proxy->vdev, n, vector); + if (vector != VIRTIO_NO_VECTOR) { + return msix_vector_use(&proxy->pci_dev, vector); + } return 0; } -- 1.6.2.2