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ce1761f0f9
qemu-e2k/hw/virtio
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David Hildenbrand ce1761f0f9 virtio-mem: Fail if a memory backend with "prealloc=on" is specified 
"prealloc=on" for the memory backend does not work as expected, as
virtio-mem will simply discard all preallocated memory immediately again.
In the best case, it's an expensive NOP. In the worst case, it's an
unexpected allocation error.

Instead, "prealloc=on" should be specified for the virtio-mem device only,
such that virtio-mem will try preallocating memory before plugging
memory dynamically to the guest. Fail if such a memory backend is
provided.

Tested-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>S
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2023-02-06 19:22:56 +01:00
..
Kconfig vdpa: add vdpa-dev support 2022-12-21 06:35:28 -05:00
meson.build virtio: Move HMP commands from monitor/ to hw/virtio/ 2023-02-04 07:56:54 +01:00
trace-events vhost-vdpa: add support for config interrupt 2023-01-08 01:54:22 -05:00
trace.h
vdpa-dev-pci.c vdpa: add vdpa-dev-pci support 2022-12-21 06:35:28 -05:00
vdpa-dev.c vdpa-dev: get iova range explicitly 2023-01-08 01:54:22 -05:00
vhost-backend.c
vhost-iova-tree.c
vhost-iova-tree.h
vhost-scsi-pci.c
vhost-shadow-virtqueue.c vhost: move iova_tree set to vhost_svq_start 2022-12-21 06:35:28 -05:00
vhost-shadow-virtqueue.h vhost: move iova_tree set to vhost_svq_start 2022-12-21 06:35:28 -05:00
vhost-stub.c
vhost-user-blk-pci.c
vhost-user-fs-pci.c
vhost-user-fs.c virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX 2023-01-08 01:54:22 -05:00
vhost-user-gpio-pci.c hw/virtio: add vhost-user-gpio-pci boilerplate 2022-10-07 09:41:51 -04:00
vhost-user-gpio.c virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX 2023-01-08 01:54:22 -05:00
vhost-user-i2c-pci.c
vhost-user-i2c.c vhost: enable vrings in vhost_dev_start() for vhost-user devices 2022-12-01 02:30:04 -05:00
vhost-user-input-pci.c
vhost-user-rng-pci.c
vhost-user-rng.c vhost: enable vrings in vhost_dev_start() for vhost-user devices 2022-12-01 02:30:04 -05:00
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 Revert "vhost-user: Introduce nested event loop in vhost_user_read()" 2023-01-28 06:21:30 -05:00
vhost-vdpa.c vdpa: commit all host notifier MRs in a single MR transaction 2023-01-08 01:54:23 -05:00
vhost-vsock-common.c virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX 2023-01-08 01:54:22 -05:00
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: configure all host notifiers in a single MR transaction 2023-01-08 01:54:23 -05:00
virtio-9p-pci.c
virtio-balloon-pci.c
virtio-balloon.c qapi: Use returned bool to check for failure (again) 2022-12-14 16:19:35 +01:00
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 virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX 2023-01-08 01:54:22 -05:00
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-iommu-pci.c hw/virtio/virtio-iommu-pci: Enforce the device is plugged on the root bus 2022-11-07 13:12:19 -05:00
virtio-iommu.c hw: Use TYPE_PCI_BUS definition where appropriate 2023-01-28 06:21:30 -05:00
virtio-mem-pci.c qapi machine: Elide redundant has_FOO in generated C 2022-12-14 20:04:47 +01:00
virtio-mem-pci.h
virtio-mem.c virtio-mem: Fail if a memory backend with "prealloc=on" is specified 2023-02-06 19:22:56 +01:00
virtio-mmio.c bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
virtio-net-pci.c
virtio-pci.c virtio-pci: fix proxy->vector_irqfd leak in virtio_pci_set_guest_notifiers 2023-01-08 01:54:23 -05:00
virtio-pmem-pci.c qapi machine: Elide redundant has_FOO in generated C 2022-12-14 20:04:47 +01:00
virtio-pmem-pci.h
virtio-pmem.c include/block: Untangle inclusion loops 2023-01-20 07:24:28 +01:00
virtio-qmp.c hw/virtio: Extract QMP QOM-specific functions to virtio-qmp.c 2023-01-08 01:54:22 -05:00
virtio-qmp.h include/hw/virtio: Break inclusion loop 2023-01-08 01:54:22 -05:00
virtio-rng-pci.c virtio-rng-pci: Allow setting nvectors, so we can use MSI-X 2022-11-07 13:12:20 -05:00
virtio-rng.c
virtio-scsi-pci.c
virtio-serial-pci.c
virtio-stub.c qmp: add QMP command x-query-virtio-queue-element 2022-10-09 16:38:45 -04:00
virtio.c include/hw/virtio: Break inclusion loop 2023-01-08 01:54:22 -05:00