[Libvirt-announce] RElease of libvirt-5.3.0
veillard at redhat.com
Sat May 4 19:33:18 UTC 2019
A bit late, sorry I was in vacations, but the release is now tagged in git
and I pushed the signed tarball and rpms to the normal place:
Please note that following discussion on last release the FTP server will
soon be shutdown.
I also pushed the related libvirt-python release that you can find in git
This is a balanced release, one thing to note is the removal of the support
for the old 4.x VirtualBox releases
- qemu: Add support for setting the emulator scheduler parameters
I/O threads and vCPU threads already support setting schedulers, but
until now it was impossible to do so for the main QEMU thread (emulator
thread in the libvirt naming). This is, however, requested for some
very specific scenarios, for example when vCPU threads are running at
such priority that could starve the main thread.
- vbox: Drop support for VirtualBox 4.x releases
Support for all the 4.x releases was ended by VirtualBox maintainers in
December 2015. Therefore, libvirt support for these releases is
- qemu: Use PCI by default for RISC-V guests
PCI support for RISC-V guests was already available in libvirt 5.1.0,
but it required the user to opt-in by manually assigning PCI addresses:
with this release, RISC-V guests will use PCI automatically when
running against a recent enough (4.0.0+) QEMU release.
- qemu: Advertise firmware autoselection in domain capabilities
The firmware autoselection feature is now exposed in domain
capabilities and management applications can query for accepted values,
i.e. values that are accepted and for which libvirt found firmware
descriptor files. Firmware Secure Boot support is also advertised.
- Drop YAJL 1 support
YAJL 2 is widely adopted and maintaining side by side support for two
versions is unnecessary.
- rpc: cleanup in virNetTLSContextNew
Failed new gnutls context allocations in virNetTLSContextNew function
results in double free and segfault. Occasional memory leaks may also
- virsh: various completers fixes
There were some possible crashers, memory leaks, etc. which are now
- qemu: Make hugepages work with memfd backend
Due to a bug in command line generation libvirt did not honor hugepages
setting with memfd backend.
- Enforce ACL write permission for getting guest time & hostname
Getting the guest time and hostname both require use of guest agent
commands. These must not be allowed for read-only users, so the
permissions check must validate "write" permission not "read".
Thanks everybody for your help bringing this release up,
Daniel Veillard | Red Hat Developers Tools http://developer.redhat.com/
veillard at redhat.com | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | virtualization library http://libvirt.org/
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