As there's no guarantee that ".cache-size" is a supported QEMU property,
let's not add it to the QEMU command line when the user explicitly set
virtio_fs_cache_size to zero.
By not always setting ".cache-size" property we avoid errors like:
```
$ sudo podman --runtime=/usr/bin/kata-runtime run --security-opt label=disable -it fedora:31 /bin/bash
Error: failed to launch qemu: exit status 1, error messages from qemu log: qemu-kvm: -device vhost-user-fs-pci,chardev=char-88c350403e95d3db,tag=kataShared,cache-size=0M: Property '.cache-size' not found: OCI runtime error
```
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Caller can hotplug vhost-user device via qmp.
The Qemu vhost-user device, like vhost-user-blk-pci and
vhost-user-scsi-pci can be hotplugged by qmp API:
ExecuteCharDevUnixSocketAdd() together with
ExecutePCIVhostUserDevAdd()
Signed-off-by: Liu Xiaodong <xiaodong.liu@intel.com>
Memory preallocation is just a property of different memory backends.
We should treat it similar to memory sharing property. Also rename
FileBackedMemShared to MemShared as it is just another memory backend
property that works with different memory backends not just file backed
memory.
Signed-off-by: Peng Tao <bergwolf@hyper.sh>
The upper hyervisor manager application maybe need to wait some
QMP event to control boot sequence, but the event we wanted maybe
not exist in some older version, so we need query all QMP ABI and
check the event is supported or not.
related: kata-containers/runtime#1918
Signed-off-by: Ning Bo <ning.bo9@zte.com.cn>
Support for function isSocketIDSupported, isThreadIDSupported and isDieIDSupported.
The functions check if the cpu driver and the qemu version support the
id parameter.
Fixes: #102
Signed-off-by: Alice Frosi <afrosi@de.ibm.com>
In QEMU 4.1 the CPU topology for x86 will change to:
`socket > die > core > thread`.
Add `die-id` field to `CPUProperties` and include it in CPU hotplugging
Signed-off-by: Julio Montes <julio.montes@intel.com>
since some vendor id like 1ded can not be identified by virtio-pci
driver, so upper level need to pass a specified vendor id to qemu.
the upper level will change unavailable id and pass it to qemu.
Signed-off-by: Ace-Tang <aceapril@126.com>
Hotplugged memory could be backed by a file on the host with sharing
turned on. This change allows qmp to pass that option to a govmm.
Signed-off-by: Ganesh Maharaj Mahalingam <ganesh.mahalingam@intel.com>
QEMU supports finer-grained units than GiB. Change the cache size to
MiB so users have more control over the cache size.
Note that changing the semantics of the CacheSize field is fine because
there are no users of this API yet. kata-runtime will be the first
users and prefers MiB instead of GiB.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In newer versions of QEMU, like 4.0-rc2, QMP events can be thrown even before
the QMP-version response, one example of this behaviour is when a virtio serial
is closed and a VSERPORT_CHANGE event is thrown.
Re-implement mainLoop to check the data received from the VM channel, since
it's not a guarantee that the first data read from the VM channel is the
QMP version.
fixes https://github.com/kata-containers/runtime/issues/1474
Signed-off-by: Julio Montes <julio.montes@intel.com>
Since []byte channel type transfer slice info(include slice underlying array pointer, len, cap)
between channel sender and receiver. scanner.Bytes() function returned slice's underlying array
may point to data that will be overwritten by a subsequent call to Scan(reference from:
https://golang.org/pkg/bufio/#Scanner.Bytes), which may make consecutive scan() call write the
read data into the same underlying array which causes receiver read mixed data,so we need to
copy line to new allocated space and then send to channel receiver to solve this problem.
Fixes: #88
Signed-off-by: jiangpengfei <jiangpengfei9@huawei.com>
The QEMU vhost-user-fs-pci device provides virtio-fs host<->guest file
system sharing (https://virtio-fs.gitlab.io/). The device is
instantiated like this:
$ qemu -chardev socket,path=/tmp/vhost-fs.sock,id=chr0
-device vhost-user-fs-pci,tag=myfs,chardev=chr0,cache-size=4G,versiontable=/dev/shm/fuse_shared_versions
This patch adds the VhostUserFS DeviceDriver and command-line generation
for this QEMU device.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
