On Sat, Nov 26, 2022 at 11:15:14AM +, Marc Zyngier wrote:
> > Physical hardware doesn't do this, virtual emulation shouldn't either.
>
> If you want to fix VFIO, be my guest. My rambling about the sorry
> state of this has been in the kernel for 5 years (ed8703a506a8).
We are talking about t
On Sat, 26 Nov 2022 06:33:15 +,
"chenxiang (M)" wrote:
>
>
> 在 2022/11/23 20:08, Marc Zyngier 写道:
> > On Wed, 23 Nov 2022 01:42:36 +,
> > chenxiang wrote:
> >> From: Xiang Chen
> >>
> >> Currently the number of MSI vectors comes from register PCI_MSI_FLAGS
> >> which should be power-o
在 2022/11/23 20:08, Marc Zyngier 写道:
On Wed, 23 Nov 2022 01:42:36 +,
chenxiang wrote:
From: Xiang Chen
Currently the number of MSI vectors comes from register PCI_MSI_FLAGS
which should be power-of-2 in qemu, in some scenaries it is not the same as
the number that driver requires in gue
On Wed, Nov 23, 2022 at 09:42:36AM +0800, chenxiang via wrote:
> From: Xiang Chen
>
> Currently the number of MSI vectors comes from register PCI_MSI_FLAGS
> which should be power-of-2 in qemu, in some scenaries it is not the same as
> the number that driver requires in guest, for example, a PCI
On Wed, 23 Nov 2022 19:55:14 +,
Alex Williamson wrote:
>
> On Wed, 23 Nov 2022 12:08:05 +
> Marc Zyngier wrote:
>
> > On Wed, 23 Nov 2022 01:42:36 +,
> > chenxiang wrote:
> > >
> > > +static int vfio_pci_verify_msi_entry(struct vfio_pci_core_device *vdev,
> > > + struct ev
On Wed, 23 Nov 2022 12:08:05 +
Marc Zyngier wrote:
> On Wed, 23 Nov 2022 01:42:36 +,
> chenxiang wrote:
> >
> > From: Xiang Chen
> >
> > Currently the number of MSI vectors comes from register PCI_MSI_FLAGS
> > which should be power-of-2 in qemu, in some scenaries it is not the same a
On Wed, 23 Nov 2022 01:42:36 +,
chenxiang wrote:
>
> From: Xiang Chen
>
> Currently the number of MSI vectors comes from register PCI_MSI_FLAGS
> which should be power-of-2 in qemu, in some scenaries it is not the same as
> the number that driver requires in guest, for example, a PCI driver
From: Xiang Chen
Currently the number of MSI vectors comes from register PCI_MSI_FLAGS
which should be power-of-2 in qemu, in some scenaries it is not the same as
the number that driver requires in guest, for example, a PCI driver wants
to allocate 6 MSI vecotrs in guest, but as the limitation, i
