Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-08 Thread Michael S. Tsirkin
On Tue, Apr 07, 2015 at 08:06:14PM +0200, Luigi Rizzo wrote: > > > On Tue, Apr 7, 2015 at 6:54 PM, Alexander Graf wrote: > > On 04/01/2015 10:15 AM, Jason Wang wrote: > > This patch increases the maximum number of virtqueues for pci from 64 > to 513. This will allow booting

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-08 Thread Jason Wang
On Wed, Apr 8, 2015 at 4:41 PM, Alexander Graf wrote: On 08.04.15 10:29, Jason Wang wrote: On Wed, Apr 8, 2015 at 2:33 AM, Alexander Graf wrote: On 04/07/2015 08:06 PM, Luigi Rizzo wrote: On Tue, Apr 7, 2015 at 6:54 PM, Alexander Graf wrote: On 04/01/2015 10:15 AM, Jason Wan

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-08 Thread Alexander Graf
On 08.04.15 10:29, Jason Wang wrote: > > > On Wed, Apr 8, 2015 at 2:33 AM, Alexander Graf wrote: >> On 04/07/2015 08:06 PM, Luigi Rizzo wrote: >>> >>> >>> On Tue, Apr 7, 2015 at 6:54 PM, Alexander Graf wrote: On 04/01/2015 10:15 AM, Jason Wang wrote: > This patch increases the maximu

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-08 Thread Jason Wang
On Wed, Apr 8, 2015 at 4:13 PM, Alexander Graf wrote: Am 08.04.2015 um 10:10 schrieb Jason Wang : On 04/08/2015 12:54 AM, Alexander Graf wrote: On 04/01/2015 10:15 AM, Jason Wang wrote: This patch increases the maximum number of virtqueues for pci from 64 to 513. This will al

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-08 Thread Jason Wang
On Wed, Apr 8, 2015 at 2:33 AM, Alexander Graf wrote: On 04/07/2015 08:06 PM, Luigi Rizzo wrote: On Tue, Apr 7, 2015 at 6:54 PM, Alexander Graf wrote: On 04/01/2015 10:15 AM, Jason Wang wrote: This patch increases the maximum number of virtqueues for pci from 64 to 513. This will allow b

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-08 Thread Jason Wang
On Wed, Apr 8, 2015 at 2:06 AM, Luigi Rizzo wrote: On Tue, Apr 7, 2015 at 6:54 PM, Alexander Graf wrote: On 04/01/2015 10:15 AM, Jason Wang wrote: This patch increases the maximum number of virtqueues for pci from 64 to 513. This will allow booting a virtio-net-pci device with 256 queue

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-08 Thread Alexander Graf
> Am 08.04.2015 um 10:10 schrieb Jason Wang : > > > >> On 04/08/2015 12:54 AM, Alexander Graf wrote: >>> On 04/01/2015 10:15 AM, Jason Wang wrote: >>> This patch increases the maximum number of virtqueues for pci from 64 >>> to 513. This will allow booting a virtio-net-pci device with 256 que

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-08 Thread Jason Wang
On 04/08/2015 12:54 AM, Alexander Graf wrote: > On 04/01/2015 10:15 AM, Jason Wang wrote: >> This patch increases the maximum number of virtqueues for pci from 64 >> to 513. This will allow booting a virtio-net-pci device with 256 queue >> pairs. >> >> To keep migration compatibility, 64 was kept

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-07 Thread Alexander Graf
On 04/07/2015 08:06 PM, Luigi Rizzo wrote: On Tue, Apr 7, 2015 at 6:54 PM, Alexander Graf > wrote: On 04/01/2015 10:15 AM, Jason Wang wrote: This patch increases the maximum number of virtqueues for pci from 64 to 513. This will allow booting

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-07 Thread Luigi Rizzo
On Tue, Apr 7, 2015 at 6:54 PM, Alexander Graf wrote: > On 04/01/2015 10:15 AM, Jason Wang wrote: > >> This patch increases the maximum number of virtqueues for pci from 64 >> to 513. This will allow booting a virtio-net-pci device with 256 queue >> pairs. >> ... >> >>* configuration space */

Re: [Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-07 Thread Alexander Graf
On 04/01/2015 10:15 AM, Jason Wang wrote: This patch increases the maximum number of virtqueues for pci from 64 to 513. This will allow booting a virtio-net-pci device with 256 queue pairs. To keep migration compatibility, 64 was kept for legacy machine types. This is because qemu in fact allows

[Qemu-devel] [PATCH V5 16/18] virtio-pci: increase the maximum number of virtqueues to 513

2015-04-01 Thread Jason Wang
This patch increases the maximum number of virtqueues for pci from 64 to 513. This will allow booting a virtio-net-pci device with 256 queue pairs. To keep migration compatibility, 64 was kept for legacy machine types. This is because qemu in fact allows guest to probe the limit of virtqueues thro