Re: [Qemu-devel] [PATCH v5] virtio-pci: enable bus master for old guests

2014-09-15 Thread Amos Kong
On Mon, Sep 15, 2014 at 12:59:44PM +0300, Michael S. Tsirkin wrote: > On Mon, Sep 15, 2014 at 05:48:17PM +0800, Jason Wang wrote: > > On 09/12/2014 02:20 AM, Michael S. Tsirkin wrote: > > > commit cc943c36faa192cd4b32af8fe5edb31894017d35 > > > pci: Use bus master address space for delivering MS

Re: [Qemu-devel] [PATCH v5] virtio-pci: enable bus master for old guests

2014-09-15 Thread Michael S. Tsirkin
On Mon, Sep 15, 2014 at 05:48:17PM +0800, Jason Wang wrote: > On 09/12/2014 02:20 AM, 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 the

Re: [Qemu-devel] [PATCH v5] virtio-pci: enable bus master for old guests

2014-09-15 Thread Jason Wang
On 09/12/2014 02:20 AM, 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. For the same

Re: [Qemu-devel] [PATCH v5] virtio-pci: enable bus master for old guests

2014-09-14 Thread Michael S. Tsirkin
On Thu, Sep 11, 2014 at 08:42:06PM +0200, Greg Kurz wrote: > On Thu, 11 Sep 2014 21:20:03 +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 v5] virtio-pci: enable bus master for old guests

2014-09-11 Thread Greg Kurz
On Thu, 11 Sep 2014 21:20:03 +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 v5] virtio-pci: enable bus master for old guests

2014-09-11 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. For the same reason, rhel6.[56] ppc64 guests cannot boot on a virtio-bl