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From: "Zhang Haoyu" <zhanghy@sangfor.com>
To: "qemu-devel" <qemu-devel@nongnu.org>, "kvm" <kvm@vger.kernel.org>
Subject: [questions] about using vfio to assign sr-iov vf to vm
Date: Thu, 14 Aug 2014 16:22:26 +0800	[thread overview]
Message-ID: <201408141622244965425@sangfor.com> (raw)

Hi, all
I'm using VFIO to assign intel 82599 VF to VM, now I encounter a problem,
82599 PF and its VFs belong to the same iommu_group, but I only want to assign some VFs to one VM, and some other VFs to another VM, ...,
so how to only unbind (part of) the VFs but PF?
I read the kernel doc vfio.txt, I'm not sure should I unbind all of the devices which belong to one iommu_group?
If so, because PF and its VFs belong to the same iommu_group, if I unbind the PF, its VFs also diappeared.
I think I misunderstand someting,
any advises?

Thanks,
Zhang Haoyu

WARNING: multiple messages have this Message-ID (diff)
From: "Zhang Haoyu" <zhanghy@sangfor.com>
To: qemu-devel <qemu-devel@nongnu.org>, kvm <kvm@vger.kernel.org>
Subject: [Qemu-devel] [questions] about using vfio to assign sr-iov vf to vm
Date: Thu, 14 Aug 2014 16:22:26 +0800	[thread overview]
Message-ID: <201408141622244965425@sangfor.com> (raw)

Hi, all
I'm using VFIO to assign intel 82599 VF to VM, now I encounter a problem,
82599 PF and its VFs belong to the same iommu_group, but I only want to assign some VFs to one VM, and some other VFs to another VM, ...,
so how to only unbind (part of) the VFs but PF?
I read the kernel doc vfio.txt, I'm not sure should I unbind all of the devices which belong to one iommu_group?
If so, because PF and its VFs belong to the same iommu_group, if I unbind the PF, its VFs also diappeared.
I think I misunderstand someting,
any advises?

Thanks,
Zhang Haoyu

             reply	other threads:[~2014-08-14  8:22 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-14  8:22 Zhang Haoyu [this message]
2014-08-14  8:22 ` [Qemu-devel] [questions] about using vfio to assign sr-iov vf to vm Zhang Haoyu
2014-08-14 12:44 ` Alex Williamson
2014-08-14 12:44   ` [Qemu-devel] " Alex Williamson
2014-08-16  6:48 ` Zhang Haoyu
2014-08-16  6:48   ` [Qemu-devel] " Zhang Haoyu
2014-08-16 13:29   ` Alex Williamson
2014-08-16 13:29     ` [Qemu-devel] " Alex Williamson
2014-08-18  1:00     ` Zhang Haoyu
2014-08-18  1:00       ` [Qemu-devel] " Zhang Haoyu
2014-08-18  1:14       ` Alex Williamson
2014-08-18  1:14         ` [Qemu-devel] " Alex Williamson
2014-08-18  8:46         ` Zhang Haoyu
2014-08-18  8:46           ` [Qemu-devel] " Zhang Haoyu
2014-08-18  9:49           ` Zhang Haoyu
2014-08-18  9:49             ` [Qemu-devel] " Zhang Haoyu
2014-08-18 12:53             ` Alex Williamson
2014-08-18 12:53               ` [Qemu-devel] " Alex Williamson

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