[libvirt] [PING: PATCH v4 0/3] Allow PCI virtio on ARM "virt" machine

Pavel Fedin p.fedin at samsung.com
Wed Jul 15 06:41:33 UTC 2015


 Knock-knock!!!

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia

> -----Original Message-----
> From: libvir-list-bounces at redhat.com [mailto:libvir-list-bounces at redhat.com] On Behalf Of Pavel
Fedin
> Sent: Thursday, July 09, 2015 12:11 PM
> To: libvir-list at redhat.com
> Cc: Peter Krempa
> Subject: [libvirt] [PATCH v4 0/3] Allow PCI virtio on ARM "virt" machine
> 
> Virt machine in qemu since v2.3.0 has PCI generic host controller, and can use
> PCI devices. This provides performance improvement as well as vhost-net with
> irqfd support for virtio-net. However libvirt currently does not allow ARM virt
> machine to have PCI devices. This patchset adds the necessary support.
> 
> Changes since v3:
> - Capability is based not on qemu version but on support of "gpex-pcihost"
>   device by qemu
> - Added a workaround, allowing to pass "make check". The problem is that
>   test suite does not build capabilities cache. Unfortunately this means
>   that correct unit-test for the new functionality currently cannot be
>   written. Test suite framework needs to be improved.
> Changes since v2:
> Complete rework, use different approach
> - Correctly model PCI Express bus on the machine. It is now possible to
>   explicitly specify <address-type='pci'> with attributes. This allows to
>   attach not only virtio, but any other PCI device to the model.
> - Default is not changed and still mmio, for backwards compatibility with
>   existing installations. PCI bus has to be explicitly specified.
> - Check for the capability in correct place, in v2 it actually did not work
> Changes since v1:
> - Added capability based on qemu version number
> - Recognize also "virt-" prefix
> 
> Pavel Fedin (3):
>   Introduce QEMU_CAPS_OBJECT_GPEX
>   Add PCI-Express root to ARM virt machine
>   Build correct command line for PCI NICs on ARM
> 
>  src/qemu/qemu_capabilities.c |  2 ++
>  src/qemu/qemu_capabilities.h |  1 +
>  src/qemu/qemu_command.c      |  3 ++-
>  src/qemu/qemu_domain.c       | 17 +++++++++++++----
>  4 files changed, 18 insertions(+), 5 deletions(-)
> 
> --
> 1.9.5.msysgit.0
> 
> --
> libvir-list mailing list
> libvir-list at redhat.com
> https://www.redhat.com/mailman/listinfo/libvir-list




More information about the libvir-list mailing list