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[Qemu-devel] [PULL 14/42] virtio: generation counter support
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PULL 14/42] virtio: generation counter support |
Date: |
Thu, 11 Jun 2015 13:58:45 +0200 |
Signed-off-by: Michael S. Tsirkin <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
---
include/hw/virtio/virtio.h | 1 +
hw/virtio/virtio-pci.c | 2 +-
hw/virtio/virtio.c | 1 +
3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index df89913..b9e36f9 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -78,6 +78,7 @@ struct VirtIODevice
size_t config_len;
void *config;
uint16_t config_vector;
+ uint32_t generation;
int nvectors;
VirtQueue *vq;
uint16_t device_id;
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 8fc3c4e..7805bdd 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -977,7 +977,7 @@ static uint64_t virtio_pci_common_read(void *opaque, hwaddr
addr,
val = vdev->status;
break;
case VIRTIO_PCI_COMMON_CFGGENERATION:
- val = 0; /* TODO */
+ val = vdev->generation;
break;
case VIRTIO_PCI_COMMON_Q_SELECT:
val = vdev->queue_sel;
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 8a6ebae..cae5eca 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -930,6 +930,7 @@ void virtio_notify_config(VirtIODevice *vdev)
return;
vdev->isr |= 0x03;
+ vdev->generation++;
virtio_notify_vector(vdev, vdev->config_vector);
}
--
MST
- [Qemu-devel] [PULL 02/42] virtio: endianness checks for virtio 1.0 devices, (continued)
- [Qemu-devel] [PULL 02/42] virtio: endianness checks for virtio 1.0 devices, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 03/42] virtio: allow virtio-1 queue layout, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 05/42] virtio: disallow late feature changes for virtio-1, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 04/42] dataplane: allow virtio-1 devices, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 06/42] virtio: allow to fail setting status, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 07/42] virtio-net: no writeable mac for virtio-1, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 08/42] virtio-net: support longer header, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 10/42] vhost_net: add version_1 feature, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 09/42] virtio-net: enable virtio 1.0, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 12/42] linux-headers: add virtio_pci, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 14/42] virtio: generation counter support,
Michael S. Tsirkin <=
- [Qemu-devel] [PULL 13/42] virtio-pci: initial virtio 1.0 support, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 11/42] vhost: 64 bit features, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 15/42] virtio: add modern config accessors, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 16/42] virtio-pci: switch to modern accessors for 1.0, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 17/42] virtio-pci: add flags to enable/disable legacy/modern, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 18/42] virtio-pci: make QEMU_VIRTIO_PCI_QUEUE_MEM_MULT smaller, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 22/42] virtio_balloon: header update, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 23/42] virtio-balloon: switch to virtio_add_feature, Michael S. Tsirkin, 2015/06/11
- [Qemu-devel] [PULL 24/42] virtio-pci: add struct VirtIOPCIRegion for virtio-1 regions, Michael S. Tsirkin, 2015/06/11