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| author | Richard Henderson <richard.henderson@linaro.org> | 2021-10-20 06:10:51 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-10-20 06:10:51 -0700 |
| commit | afc9fcde55296b83f659de9da3cdf044812a6eeb (patch) | |
| tree | 2b2a3e07632ac570680a7b4f9bd18440a454fd88 /docs/system | |
| parent | 50352cce138ef3b30c1cda28a4df68fff5da3202 (diff) | |
| parent | a8339e07f94a47f99560baef59d65a9e039aaf45 (diff) | |
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
pc,pci,virtio: features, fixes, tests
vhost user rng
vdpa multiqueue
Fixes, cleanups, new tests all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Wed 20 Oct 2021 03:18:24 AM PDT
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full]
* remotes/mst/tags/for_upstream: (44 commits)
tests/acpi/bios-tables-test: update DSDT blob for multifunction bridge test
tests/acpi/pcihp: add unit tests for hotplug on multifunction bridges for q35
tests/acpi/bios-tables-test: add and allow changes to a new q35 DSDT table blob
pci: fix PCI resource reserve capability on BE
vhost-vdpa: multiqueue support
virtio-net: vhost control virtqueue support
vhost: record the last virtqueue index for the virtio device
virtio-net: use "queue_pairs" instead of "queues" when possible
vhost-net: control virtqueue support
net: introduce control client
vhost-vdpa: let net_vhost_vdpa_init() returns NetClientState *
vhost-vdpa: prepare for the multiqueue support
vhost-vdpa: classify one time request
vhost-vdpa: open device fd in net_init_vhost_vdpa()
bios-tables-test: don't disassemble empty files
rebuild-expected-aml.sh: allow partial target list
qdev/qbus: remove failover specific code
vhost-user-blk-test: pass vhost-user socket fds to QSD
failover: fix a regression introduced by JSON'ification of -device
vhost-user: fix duplicated notifier MR init
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'docs/system')
| -rw-r--r-- | docs/system/device-emulation.rst | 1 | ||||
| -rw-r--r-- | docs/system/devices/vhost-user-rng.rst | 39 |
2 files changed, 40 insertions, 0 deletions
diff --git a/docs/system/device-emulation.rst b/docs/system/device-emulation.rst index 7afcfd8064..19944f526c 100644 --- a/docs/system/device-emulation.rst +++ b/docs/system/device-emulation.rst @@ -88,3 +88,4 @@ Emulated Devices devices/usb.rst devices/vhost-user.rst devices/virtio-pmem.rst + devices/vhost-user-rng.rst diff --git a/docs/system/devices/vhost-user-rng.rst b/docs/system/devices/vhost-user-rng.rst new file mode 100644 index 0000000000..a145d4105c --- /dev/null +++ b/docs/system/devices/vhost-user-rng.rst @@ -0,0 +1,39 @@ +QEMU vhost-user-rng - RNG emulation +=================================== + +Background +---------- + +What follows builds on the material presented in vhost-user.rst - it should +be reviewed before moving forward with the content in this file. + +Description +----------- + +The vhost-user-rng device implementation was designed to work with a random +number generator daemon such as the one found in the vhost-device crate of +the rust-vmm project available on github [1]. + +[1]. https://github.com/rust-vmm/vhost-device + +Examples +-------- + +The daemon should be started first: + +:: + + host# vhost-device-rng --socket-path=rng.sock -c 1 -m 512 -p 1000 + +The QEMU invocation needs to create a chardev socket the device can +use to communicate as well as share the guests memory over a memfd. + +:: + + host# qemu-system \ + -chardev socket,path=$(PATH)/rng.sock,id=rng0 \ + -device vhost-user-rng-pci,chardev=rng0 \ + -m 4096 \ + -object memory-backend-file,id=mem,size=4G,mem-path=/dev/shm,share=on \ + -numa node,memdev=mem \ + ... |