From: Avi Kivity <avi@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>,
mst@redhat.com, mashirle@us.ibm.com, krkumar2@in.ibm.com,
habanero@linux.vnet.ibm.com, rusty@rustcorp.com.au,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org, edumazet@google.com,
tahm@linux.vnet.ibm.com, jwhan@filewood.snu.ac.kr,
davem@davemloft.net, kvm@vger.kernel.org, sri@us.ibm.com
Subject: Re: [net-next RFC V5 3/5] virtio: intorduce an API to set affinity for a virtqueue
Date: Thu, 09 Aug 2012 18:35:45 +0300 [thread overview]
Message-ID: <5023D8D1.3060604@redhat.com> (raw)
In-Reply-To: <5023D3A1.8040102@redhat.com>
On 08/09/2012 06:13 PM, Paolo Bonzini wrote:
> Il 05/07/2012 12:29, Jason Wang ha scritto:
>> Sometimes, virtio device need to configure irq affiniry hint to maximize the
>> performance. Instead of just exposing the irq of a virtqueue, this patch
>> introduce an API to set the affinity for a virtqueue.
>>
>> The api is best-effort, the affinity hint may not be set as expected due to
>> platform support, irq sharing or irq type. Currently, only pci method were
>> implemented and we set the affinity according to:
>>
>> - if device uses INTX, we just ignore the request
>> - if device has per vq vector, we force the affinity hint
>> - if the virtqueues share MSI, make the affinity OR over all affinities
>> requested
>>
>> Signed-off-by: Jason Wang <jasowang@redhat.com>
>
> It looks like both I and Jason will need these patches during the 3.7
> merge window, and from different trees (net-next vs. scsi). How do we
> synchronize?
Get one of them to promise not to rebase, merge it, and base your
patches on top of the merge.
--
error compiling committee.c: too many arguments to function
WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: krkumar2@in.ibm.com, habanero@linux.vnet.ibm.com,
kvm@vger.kernel.org, mst@redhat.com, netdev@vger.kernel.org,
mashirle@us.ibm.com, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org, edumazet@google.com,
tahm@linux.vnet.ibm.com, jwhan@filewood.snu.ac.kr,
davem@davemloft.net, sri@us.ibm.com
Subject: Re: [net-next RFC V5 3/5] virtio: intorduce an API to set affinity for a virtqueue
Date: Thu, 09 Aug 2012 18:35:45 +0300 [thread overview]
Message-ID: <5023D8D1.3060604@redhat.com> (raw)
In-Reply-To: <5023D3A1.8040102@redhat.com>
On 08/09/2012 06:13 PM, Paolo Bonzini wrote:
> Il 05/07/2012 12:29, Jason Wang ha scritto:
>> Sometimes, virtio device need to configure irq affiniry hint to maximize the
>> performance. Instead of just exposing the irq of a virtqueue, this patch
>> introduce an API to set the affinity for a virtqueue.
>>
>> The api is best-effort, the affinity hint may not be set as expected due to
>> platform support, irq sharing or irq type. Currently, only pci method were
>> implemented and we set the affinity according to:
>>
>> - if device uses INTX, we just ignore the request
>> - if device has per vq vector, we force the affinity hint
>> - if the virtqueues share MSI, make the affinity OR over all affinities
>> requested
>>
>> Signed-off-by: Jason Wang <jasowang@redhat.com>
>
> It looks like both I and Jason will need these patches during the 3.7
> merge window, and from different trees (net-next vs. scsi). How do we
> synchronize?
Get one of them to promise not to rebase, merge it, and base your
patches on top of the merge.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-08-09 15:37 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-05 10:29 [net-next RFC V5 0/5] Multiqueue virtio-net Jason Wang
2012-07-05 10:29 ` Jason Wang
2012-07-05 10:29 ` [net-next RFC V5 1/5] virtio_net: Introduce VIRTIO_NET_F_MULTIQUEUE Jason Wang
2012-07-05 10:29 ` Jason Wang
2012-07-05 10:29 ` [net-next RFC V5 2/5] virtio_ring: move queue_index to vring_virtqueue Jason Wang
2012-07-05 10:29 ` Jason Wang
2012-07-05 11:40 ` Sasha Levin
2012-07-05 11:40 ` Sasha Levin
2012-07-06 3:17 ` Jason Wang
2012-07-06 3:17 ` Jason Wang
2012-07-26 8:20 ` Paolo Bonzini
2012-07-26 8:20 ` Paolo Bonzini
2012-07-30 3:30 ` Jason Wang
2012-07-30 3:30 ` Jason Wang
2012-07-05 10:29 ` [net-next RFC V5 3/5] virtio: intorduce an API to set affinity for a virtqueue Jason Wang
2012-07-05 10:29 ` Jason Wang
2012-07-27 14:38 ` Paolo Bonzini
2012-07-27 14:38 ` Paolo Bonzini
2012-07-29 20:40 ` Michael S. Tsirkin
2012-07-29 20:40 ` Michael S. Tsirkin
2012-07-30 6:27 ` Paolo Bonzini
2012-08-09 15:14 ` Paolo Bonzini
2012-08-09 15:14 ` Paolo Bonzini
2012-08-09 15:13 ` Paolo Bonzini
2012-08-09 15:13 ` Paolo Bonzini
2012-08-09 15:35 ` Avi Kivity [this message]
2012-08-09 15:35 ` Avi Kivity
2012-07-05 10:29 ` [net-next RFC V5 4/5] virtio_net: multiqueue support Jason Wang
2012-07-05 10:29 ` Jason Wang
2012-07-05 20:02 ` Amos Kong
2012-07-05 20:02 ` Amos Kong
2012-07-06 7:45 ` Jason Wang
2012-07-06 7:45 ` Jason Wang
2012-07-20 13:40 ` Michael S. Tsirkin
2012-07-20 13:40 ` Michael S. Tsirkin
2012-07-21 12:02 ` Sasha Levin
2012-07-21 12:02 ` Sasha Levin
2012-07-23 5:54 ` Jason Wang
2012-07-23 5:54 ` Jason Wang
2012-07-23 9:28 ` Sasha Levin
2012-07-23 9:28 ` Sasha Levin
2012-07-30 3:29 ` Jason Wang
2012-07-30 3:29 ` Jason Wang
2012-07-29 9:44 ` Michael S. Tsirkin
2012-07-29 9:44 ` Michael S. Tsirkin
2012-07-30 3:26 ` Jason Wang
2012-07-30 3:26 ` Jason Wang
2012-07-30 13:00 ` Sasha Levin
2012-07-30 13:00 ` Sasha Levin
2012-07-23 5:48 ` Jason Wang
2012-07-23 5:48 ` Jason Wang
2012-07-29 9:50 ` Michael S. Tsirkin
2012-07-29 9:50 ` Michael S. Tsirkin
2012-07-30 5:15 ` Jason Wang
2012-07-30 5:15 ` Jason Wang
2012-07-05 10:29 ` [net-next RFC V5 5/5] virtio_net: support negotiating the number of queues through ctrl vq Jason Wang
2012-07-05 10:29 ` Jason Wang
2012-07-05 12:51 ` Sasha Levin
2012-07-05 12:51 ` Sasha Levin
2012-07-05 20:07 ` Amos Kong
2012-07-05 20:07 ` Amos Kong
2012-07-06 7:46 ` Jason Wang
2012-07-06 7:46 ` Jason Wang
2012-07-06 3:20 ` Jason Wang
2012-07-06 3:20 ` Jason Wang
2012-07-06 6:38 ` Stephen Hemminger
2012-07-06 6:38 ` Stephen Hemminger
2012-07-06 9:26 ` Jason Wang
2012-07-06 9:26 ` Jason Wang
2012-07-06 8:10 ` Sasha Levin
2012-07-06 8:10 ` Sasha Levin
2012-07-09 20:13 ` Ben Hutchings
2012-07-09 20:13 ` Ben Hutchings
2012-07-20 12:33 ` Michael S. Tsirkin
2012-07-20 12:33 ` Michael S. Tsirkin
2012-07-23 5:32 ` Jason Wang
2012-07-23 5:32 ` Jason Wang
2012-07-05 17:45 ` [net-next RFC V5 0/5] Multiqueue virtio-net Rick Jones
2012-07-05 17:45 ` Rick Jones
2012-07-06 7:42 ` Jason Wang
2012-07-06 7:42 ` Jason Wang
2012-07-06 16:23 ` Rick Jones
2012-07-06 16:23 ` Rick Jones
2012-07-09 3:23 ` Jason Wang
2012-07-09 3:23 ` Jason Wang
2012-07-09 16:46 ` Rick Jones
2012-07-09 16:46 ` Rick Jones
2012-07-08 8:19 ` Ronen Hod
2012-07-08 8:19 ` Ronen Hod
2012-07-09 5:35 ` Jason Wang
2012-07-09 5:35 ` Jason Wang
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