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92a8ee1b59
qemu-e2k/hw/virtio
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David Hildenbrand 92a8ee1b59 virtio-mem: Prepare for device unplug support 
In many cases, blindly unplugging a virtio-mem device is problematic. We
can only safely remove a device once:
* The guest is not expecting to be able to read unplugged memory
  (unplugged-inaccessible == on)
* The virtio-mem device does not have memory plugged (size == 0)
* The virtio-mem device does not have outstanding requests to the VM to
  plug memory (requested-size == 0)

So let's add a callback to the virtio-mem device class to check for that.
We'll wire-up virtio-mem-pci next.

Message-ID: <20230711153445.514112-7-david@redhat.com>
Tested-by: Mario Casquero <mcasquer@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
2023-07-12 09:27:31 +02:00
..
Kconfig virtio-md-pci: New parent type for virtio-mem-pci and virtio-pmem-pci 2023-07-12 09:27:25 +02:00
meson.build virtio-md-pci: New parent type for virtio-mem-pci and virtio-pmem-pci 2023-07-12 09:27:25 +02:00
trace-events virtio-iommu: Fix 64kB host page size VFIO device assignment 2023-07-10 18:59:32 -04:00
trace.h
vdpa-dev-pci.c vdpa: add vdpa-dev-pci support 2022-12-21 06:35:28 -05:00
vdpa-dev.c vhost-user: fully use new backend/frontend naming 2023-06-26 09:50:00 -04:00
vhost-backend.c
vhost-iova-tree.c
vhost-iova-tree.h
vhost-scsi-pci.c
vhost-shadow-virtqueue.c vhost: Fix false positive out-of-bounds 2023-07-10 18:59:32 -04:00
vhost-shadow-virtqueue.h vhost: fix possible wrap in SVQ descriptor ring 2023-05-19 01:36:09 -04:00
vhost-stub.c vhost: register and change IOMMU flag depending on Device-TLB state 2023-07-10 15:07:50 -04:00
vhost-user-blk-pci.c
vhost-user-fs-pci.c
vhost-user-fs.c hw/virtio: fix typo in VIRTIO_CONFIG_IRQ_IDX comments 2023-07-10 18:59:32 -04:00
vhost-user-gpio-pci.c
vhost-user-gpio.c hw/virtio: fix typo in VIRTIO_CONFIG_IRQ_IDX comments 2023-07-10 18:59:32 -04:00
vhost-user-i2c-pci.c
vhost-user-i2c.c virtio: i2c: Check notifier helpers for VIRTIO_CONFIG_IRQ_IDX 2023-04-24 22:56:55 -04:00
vhost-user-input-pci.c
vhost-user-rng-pci.c
vhost-user-rng.c vhost-user-rng: Back up vqs before cleaning up vhost_dev 2023-03-02 03:10:47 -05:00
vhost-user-scmi-pci.c hw/virtio: Add vhost-user-scmi-pci boilerplate 2023-07-10 16:17:08 -04:00
vhost-user-scmi.c hw/virtio: Add boilerplate for vhost-user-scmi device 2023-07-10 16:17:07 -04:00
vhost-user-scsi-pci.c
vhost-user-vsock-pci.c
vhost-user-vsock.c hw/virtio: introduce virtio_device_should_start 2022-11-07 14:08:18 -05:00
vhost-user.c vhost-user: Make RESET_DEVICE a per device message 2023-07-10 16:17:08 -04:00
vhost-vdpa.c vhost-vdpa: mute unaligned memory error report 2023-07-10 18:59:32 -04:00
vhost-vsock-common.c hw/virtio: fix typo in VIRTIO_CONFIG_IRQ_IDX comments 2023-07-10 18:59:32 -04:00
vhost-vsock-pci.c
vhost-vsock.c hw/virtio: introduce virtio_device_should_start 2022-11-07 14:08:18 -05:00
vhost.c vhost: register and change IOMMU flag depending on Device-TLB state 2023-07-10 15:07:50 -04:00
virtio-9p-pci.c
virtio-balloon-pci.c
virtio-balloon.c hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
virtio-blk-pci.c
virtio-bus.c
virtio-config-io.c hw/virtio: Extract config read/write accessors to virtio-config-io.c 2022-12-21 07:32:24 -05:00
virtio-crypto-pci.c
virtio-crypto.c hw/virtio: fix typo in VIRTIO_CONFIG_IRQ_IDX comments 2023-07-10 18:59:32 -04:00
virtio-hmp-cmds.c virtio: Move HMP commands from monitor/ to hw/virtio/ 2023-02-04 07:56:54 +01:00
virtio-input-host-pci.c
virtio-input-pci.c virtio-input-pci: add virtio-multitouch-pci 2023-05-28 13:08:25 +04:00
virtio-iommu-pci.c
virtio-iommu.c virtio-iommu: Rework the traces in virtio_iommu_set_page_size_mask() 2023-07-10 18:59:32 -04:00
virtio-md-pci.c virtio-md-pci: Support unplug requests for compatible devices 2023-07-12 09:27:30 +02:00
virtio-mem-pci.c virtio-md-pci: New parent type for virtio-mem-pci and virtio-pmem-pci 2023-07-12 09:27:25 +02:00
virtio-mem-pci.h virtio-md-pci: New parent type for virtio-mem-pci and virtio-pmem-pci 2023-07-12 09:27:25 +02:00
virtio-mem.c virtio-mem: Prepare for device unplug support 2023-07-12 09:27:31 +02:00
virtio-mmio.c virtio: refresh vring region cache after updating a virtqueue size 2023-04-21 03:08:21 -04:00
virtio-net-pci.c
virtio-pci.c virtio-pci: add handling of PCI ATS and Device-TLB enable/disable 2023-05-19 10:30:46 -04:00
virtio-pmem-pci.c virtio-md-pci: New parent type for virtio-mem-pci and virtio-pmem-pci 2023-07-12 09:27:25 +02:00
virtio-pmem-pci.h virtio-md-pci: New parent type for virtio-mem-pci and virtio-pmem-pci 2023-07-12 09:27:25 +02:00
virtio-pmem.c thread-pool: avoid passing the pool parameter every time 2023-04-25 13:17:28 +02:00
virtio-qmp.c vhost-user: fully use new backend/frontend naming 2023-06-26 09:50:00 -04:00
virtio-qmp.h include/hw/virtio: Break inclusion loop 2023-01-08 01:54:22 -05:00
virtio-rng-pci.c
virtio-rng.c
virtio-scsi-pci.c
virtio-serial-pci.c
virtio-stub.c
virtio.c aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00