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Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if
From: |
Cornelia Huck |
Subject: |
Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported |
Date: |
Thu, 12 Oct 2017 16:54:58 +0200 |
On Thu, 12 Oct 2017 16:48:26 +0200
Pierre Morel <address@hidden> wrote:
> On 11/10/2017 14:20, Cornelia Huck wrote:
> > On Tue, 10 Oct 2017 18:01:53 +0200
> > Pierre Morel <address@hidden> wrote:
> >
> >> Since in the case we have no AIS in KVM only PCI is impacted, do you
> >> think we can fence IRQFD for MSI with
> >>
> >> kvm_msi_via_irqfd_allowed = false;
> >>
> >> in kvm_arch_init_irq_routing() ?
> >
> > Hm, it seems we never set that for s390x... does that imply that we
> > never support irqfd for pci anyway?
>
> ... yes, we never supported irqfd for virtio-pci anyway.
> This explains a lot of things to me.
> :)
:D
>
> >
> >>
> >> In fact, if we also verify the AIS availability in the same routine we
> >> can avoid the ugly include of vfio/pci.h
> >
> > If we can get the serialization right (and setting that value to false
> > does indeed have the desired effect), that's probably the way to go.
> >
>
> So now, in v2, we will be able to **enable** irqfd if we detect that we
> handle AIS in kernel. :)
Let's see how that works out :)
- [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, (continued)
- [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Pierre Morel, 2017/10/04
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Cornelia Huck, 2017/10/09
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Alex Williamson, 2017/10/09
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Pierre Morel, 2017/10/09
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Cornelia Huck, 2017/10/10
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Pierre Morel, 2017/10/10
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Cornelia Huck, 2017/10/11
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Pierre Morel, 2017/10/12
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported, Pierre Morel, 2017/10/12
- Re: [Qemu-devel] [PATCH v1 4/5] s390x/pci: Refuse to realize VFIO-PCI if AIS needed but supported,
Cornelia Huck <=
[Qemu-devel] [PATCH v1 5/5] s390x/intc: AIS is now always migratable, Pierre Morel, 2017/10/04
Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Christian Borntraeger, 2017/10/30
- Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Cornelia Huck, 2017/10/30
- Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Christian Borntraeger, 2017/10/30
- Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Pierre Morel, 2017/10/30
- Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Christian Borntraeger, 2017/10/30
- Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Halil Pasic, 2017/10/30
- Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Cornelia Huck, 2017/10/30
- Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Christian Borntraeger, 2017/10/30
- Re: [Qemu-devel] [PATCH v1 0/5][RFC] Refactoring of AIS support, Pierre Morel, 2017/10/30