From: "Michael S. Tsirkin" <mst@redhat.com>
To: qemu-devel@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>,
Denis Plotnikov <dplotnikov@virtuozzo.com>,
qemu-stable@nongnu.org
Subject: [PULL v2 28/32] virtio-mmio: update queue size on guest write
Date: Tue, 7 Jan 2020 02:37:31 -0500 [thread overview]
Message-ID: <20200107073451.298261-29-mst@redhat.com> (raw)
In-Reply-To: <20200107073451.298261-1-mst@redhat.com>
From: Denis Plotnikov <dplotnikov@virtuozzo.com>
Some guests read back queue size after writing it.
Always update the on size write otherwise they might be confused.
Cc: qemu-stable@nongnu.org
Signed-off-by: Denis Plotnikov <dplotnikov@virtuozzo.com>
Message-Id: <20191224081446.17003-1-dplotnikov@virtuozzo.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/virtio/virtio-mmio.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index ef40b7a9b2..872f2cd237 100644
--- a/hw/virtio/virtio-mmio.c
+++ b/hw/virtio/virtio-mmio.c
@@ -308,8 +308,9 @@ static void virtio_mmio_write(void *opaque, hwaddr offset, uint64_t value,
break;
case VIRTIO_MMIO_QUEUE_NUM:
trace_virtio_mmio_queue_write(value, VIRTQUEUE_MAX_SIZE);
+ virtio_queue_set_num(vdev, vdev->queue_sel, value);
+
if (proxy->legacy) {
- virtio_queue_set_num(vdev, vdev->queue_sel, value);
virtio_queue_update_rings(vdev, vdev->queue_sel);
} else {
proxy->vqs[vdev->queue_sel].num = value;
--
MST
next prev parent reply other threads:[~2020-01-07 9:08 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 7:35 [PULL v2 00/32] virtio, pci, pc: fixes, features Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 01/32] virtio: add ability to delete vq through a pointer Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 02/32] virtio: make virtio_delete_queue idempotent Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 03/32] virtio-balloon: fix memory leak while attach virtio-balloon device Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 04/32] virtio-serial-bus: fix memory leak while attach virtio-serial-bus Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 05/32] virtio-input: convert to new virtio_delete_queue Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 06/32] intel_iommu: fix bug to read DMAR_RTADDR_REG Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 07/32] virtio: update queue size on guest write Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 08/32] virtio-pci: disable vring processing when bus-mastering is disabled Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 09/32] Implement backend program convention command for vhost-user-blk Michael S. Tsirkin
2020-01-07 7:35 ` [PULL v2 10/32] virtio: don't enable notifications during polling Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 11/32] numa: Extend CLI to provide initiator information for numa nodes Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 12/32] numa: Extend CLI to provide memory latency and bandwidth information Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 13/32] numa: Extend CLI to provide memory side cache information Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 14/32] hmat acpi: Build Memory Proximity Domain Attributes Structure(s) Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 15/32] hmat acpi: Build System Locality Latency and Bandwidth Information Structure(s) Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 16/32] hmat acpi: Build Memory Side Cache " Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 17/32] tests/numa: Add case for QMP build HMAT Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 18/32] tests/bios-tables-test: add test cases for ACPI HMAT Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 19/32] ACPI: add expected files for HMAT tests (acpihmat) Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 20/32] virtio-mmio: Clear v2 transport state on soft reset Michael S. Tsirkin
2020-01-07 7:36 ` [PULL v2 21/32] hw/pci/pci_host: Remove redundant PCI_DPRINTF() Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 22/32] hw/pci/pci_host: Let pci_data_[read/write] use unsigned 'size' argument Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 23/32] vhost-user: add VHOST_USER_RESET_DEVICE to reset devices Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 24/32] vhost-user-scsi: reset the device if supported Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 25/32] hw: fix using 4.2 compat in 5.0 machine types for i440fx/q35 Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 26/32] virtio: make seg_max virtqueue size dependent Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 27/32] tests: add virtio-scsi and virtio-blk seg_max_adjust test Michael S. Tsirkin
2020-01-07 7:37 ` Michael S. Tsirkin [this message]
2020-01-07 7:37 ` [PULL v2 29/32] virtio: reset region cache when on queue deletion Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 30/32] virtio-net: delete also control queue when TX/RX deleted Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 31/32] intel_iommu: a fix to vtd_find_as_from_bus_num() Michael S. Tsirkin
2020-01-07 7:37 ` [PULL v2 32/32] intel_iommu: add present bit check for pasid table entries Michael S. Tsirkin
2020-01-07 17:08 ` [PULL v2 00/32] virtio, pci, pc: fixes, features Peter Maydell
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