Re: [Qemu-devel] [PATCH v2] virtio-pci: enable bus master for old guests

2014-09-11 Thread Michael S. Tsirkin
On Thu, Sep 11, 2014 at 06:00:39PM +0200, Greg Kurz wrote: > On Wed, 10 Sep 2014 20:30:47 +0300 > "Michael S. Tsirkin" wrote: > > > commit cc943c36faa192cd4b32af8fe5edb31894017d35 > > pci: Use bus master address space for delivering MSI/MSI-X messages > > breaks virtio-net for rhel6.[56] x86

Re: [Qemu-devel] [PATCH v2] virtio-pci: enable bus master for old guests

2014-09-11 Thread Michael S. Tsirkin
On Thu, Sep 11, 2014 at 06:00:39PM +0200, Greg Kurz wrote: > On Wed, 10 Sep 2014 20:30:47 +0300 > "Michael S. Tsirkin" wrote: > > > commit cc943c36faa192cd4b32af8fe5edb31894017d35 > > pci: Use bus master address space for delivering MSI/MSI-X messages > > breaks virtio-net for rhel6.[56] x86

Re: [Qemu-devel] [PATCH v2] virtio-pci: enable bus master for old guests

2014-09-11 Thread Greg Kurz
On Wed, 10 Sep 2014 20:30:47 +0300 "Michael S. Tsirkin" wrote: > commit cc943c36faa192cd4b32af8fe5edb31894017d35 > pci: Use bus master address space for delivering MSI/MSI-X messages > breaks virtio-net for rhel6.[56] x86 guests because they don't > enable bus mastering for virtio PCI devices

[Qemu-devel] [PATCH v2] virtio-pci: enable bus master for old guests

2014-09-10 Thread Michael S. Tsirkin
commit cc943c36faa192cd4b32af8fe5edb31894017d35 pci: Use bus master address space for delivering MSI/MSI-X messages breaks virtio-net for rhel6.[56] x86 guests because they don't enable bus mastering for virtio PCI devices Old guests forgot to enable bus mastering, enable it automatically when